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Komatsu weather & best time to visit

Sun, sea & sand

Komatsu at a glance

Best time
Jul – Sep
Warmest month
Aug · 31°
Warmest sea
Aug · 27.2°
Sunshine a year
1,750 h
Rain a year
2,079 mm
Climate
Temperate
Time zone
UTC+9
Elevation
7 m

Climate in Komatsu

Komatsu has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 31 °C, while January is the coolest at 8 °C. With around 1,750 hours of sunshine a year, Komatsu is moderately sunny; August is the sunniest month with 6.7 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Komatsu

The best time to visit Komatsu is from July to September. In August and September, though, the typhoon season is at its peak: check the forecast before you go. The sea reaches 27.2 °C in August, but rain or cool air gets in the way of a classic beach holiday. The wettest month is December with 241 mm of precipitation.

Komatsu through the seasons

How the weather changes over the seasons, with averages for each.

Komatsu in spring

Mar – May

21

Poor

  • 12–22 °C by day
  • Sea 13 °C
  • 5.9 h of sun a day
  • 42 rainy days in all

Komatsu in summer

Jun – Aug

71

Good

  • 25–31 °C by day
  • Sea 24 °C
  • 5.7 h of sun a day
  • 42 rainy days in all

Komatsu in autumn

Sep – Nov

44

Fair

  • 16–27 °C by day
  • Sea 22 °C
  • 4.5 h of sun a day
  • 45 rainy days in all

Komatsu in winter

Dec – Feb

0

Poor

  • 8–11 °C by day
  • Sea 14 °C
  • 3.0 h of sun a day
  • 67 rainy days in all

Which month for what?

Beach & swimming

No month

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

No month

15–28 °C and not too much rain

Rainy months

All year

Rainy season or more than 12 rainy days

Snow

Dec – Mar

Snow on 2 or more days

Find your perfect month

Tell us what you like and we rate every month in Komatsu for you.

Swimming in the sea
Sunshine
Little rain

Your best months: July – September

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Weather in October

Weather in October

48

Holiday weather in October

Fair

Best time to visit: July – September

October is the peak of the typhoon season Hurricane season

Keep in mindFrequent rainStorm season

A typical day in October

  1. Morning, 08:00: about 18°
  2. Midday, 13:00: about 22°
  3. Afternoon, 16:00: about 21°
  4. Evening, 20:00: about 18°
  5. Night, 23:00: about 17°

06:0017:20

Pleasant evenings; a light layer can help.

Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.

Light for photos in October

Golden hour
Morning 05:44–06:35 · evening 16:45–17:35
Blue hour
Morning 05:34–05:44 · evening 17:35–17:45

Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.

October in Komatsu compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs fall from about 24° at the start of the month to 19° at the end. The sea cools from 24° to 21°. The days get 1.1 h shorter.

Early or late October?
October1 Oct31 Oct
Daytime high24°19°
Night-time low18°13°
Sea24°21°
Daylight11.9 h10.8 h

What is the weather like in Komatsu in October?

In October, Komatsu is warm: daytime highs average 22 °C, and nights cool down to about 16 °C. The sea averages 22.2 °C – refreshing for a swim. Expect around 4.9 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 163 mm in total. All in all, October is a so-so month for a holiday in Komatsu.

More details for October

Daylight
11 h 20 min06:00 – 17:20
UV index
5 · moderateclear sky, noon (estimate)All months
Muggy days
2 daysdew point 18 °C or moreAll months
Wind
20 km/haverage daily peakAll months
Cloud cover
58 %on averageAll months
Hot days
0 days30 °C or moreAll months
Snow days
0 days1 cm or more of fresh snowAll months
Time zone
UTC+9offset from UTC

How the score comes together

  • Temperatureweight 35 %48 %
  • Seaweight 25 %74 %
  • Sunshineweight 20 %32 %
  • Few rainy daysweight 20 %32 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.

What to pack in October

  • Swimwear
  • Sunscreen
  • A jumper for the evenings
  • Rain jacket or umbrella

Compare two months in Komatsu

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

vs

August has the better holiday weather in Komatsu: score 79 against 48. In August, days are 9 °C warmer than in October. The sea is 5 °C warmer in August. The sun shines 2 hours longer a day in August.

October vs August, Komatsu
MonthOctoberAugust
Holiday weather score4879better
Daytime high22°31°
Night-time low16°25°
Sea22.2°27.2°
Sunshine4.9 h6.7 hbetter
Rainy days1414
Rainfall163 mm159 mm
Muggy days2better30

Based on the climate averages 1996–2025.

Komatsu month by month

The typical weather for every month at a glance.

0January8° · Sea 13° · 3.0 h

In January, Komatsu is cold: daytime highs average 8 °C, and nights cool down to about 3 °C. The sea averages 13.1 °C – swimming is only for the hardy. The sun is scarce, with only about 3.0 hours a day. It rains often – on about 24 days, adding up to 217 mm. Snow falls on about 11 days. All in all, January is not an ideal month for a holiday in Komatsu.

Komatsu in January
1February8° · Sea 11° · 3.3 h

In February, Komatsu is cold: daytime highs average 8 °C, and nights cool down to about 3 °C. The sea averages 11.3 °C – swimming is only for the hardy. The sun is scarce, with only about 3.3 hours a day. It rains often – on about 19 days, adding up to 147 mm. Snow falls on about 8 days. All in all, February is not an ideal month for a holiday in Komatsu.

Komatsu in February
8March12° · Sea 11° · 4.8 h

In March, Komatsu is cool: daytime highs average 12 °C, and nights cool down to about 5 °C. The sea averages 10.8 °C – swimming is only for the hardy. Expect around 4.8 hours of sunshine a day. It rains often – on about 17 days, adding up to 152 mm. Snow falls on about 3 days. All in all, March is not an ideal month for a holiday in Komatsu.

Komatsu in March
18April17° · Sea 13° · 6.2 h

In April, Komatsu is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 12.6 °C – swimming is only for the hardy. Expect around 6.2 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 133 mm in total. All in all, April is not an ideal month for a holiday in Komatsu.

Komatsu in April
36May22° · Sea 16° · 6.6 h

In May, Komatsu is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sea averages 16.2 °C – swimming is only for the hardy. The sun shines for around 6.6 hours a day. Rain is frequent, with about 12 rainy days and 133 mm in total. All in all, May is not an ideal month for a holiday in Komatsu.

Komatsu in May
62June25° · Sea 20° · 5.2 h

In June, Komatsu is warm: daytime highs average 25 °C, and nights cool down to about 19 °C. The sea averages 20.3 °C – refreshing for a swim. Expect around 5.2 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 160 mm in total. All in all, June is a good month for a holiday in Komatsu.

Komatsu in June
71July29° · Sea 24° · 5.2 h

In July, Komatsu is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 24.3 °C – pleasant for swimming. Expect around 5.2 hours of sunshine a day. It rains often – on about 15 days, adding up to 202 mm. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Komatsu.

Komatsu in July
79August31° · Sea 27° · 6.7 h

In August, Komatsu is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 27.2 °C – lovely and warm for swimming. The sun shines for around 6.7 hours a day. Rain is frequent, with about 14 rainy days and 159 mm in total. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Komatsu.

Komatsu in August
72September27° · Sea 26° · 5.0 h

In September, Komatsu is hot: daytime highs average 27 °C, and even at night it stays warm at around 21 °C. The sea averages 25.6 °C – pleasant for swimming. Expect around 5.0 hours of sunshine a day. It rains often – on about 15 days, adding up to 194 mm. On about 6 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Komatsu.

Komatsu in September
48October22° · Sea 22° · 4.9 h

In October, Komatsu is warm: daytime highs average 22 °C, and nights cool down to about 16 °C. The sea averages 22.2 °C – refreshing for a swim. Expect around 4.9 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 163 mm in total. All in all, October is a so-so month for a holiday in Komatsu.

Komatsu in October
11November16° · Sea 19° · 3.7 h

In November, Komatsu is mild: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 19.0 °C – bracing, so a wetsuit helps for longer swims. The sun is scarce, with only about 3.7 hours a day. It rains often – on about 17 days, adding up to 179 mm. All in all, November is not an ideal month for a holiday in Komatsu.

Komatsu in November
0December11° · Sea 16° · 2.7 h

In December, Komatsu is cool: daytime highs average 11 °C, and nights cool down to about 5 °C. The sea averages 16.0 °C – swimming is only for the hardy. The sun is scarce, with only about 2.7 hours a day. It rains often – on about 23 days, adding up to 241 mm. Snow falls on about 5 days. All in all, December is not an ideal month for a holiday in Komatsu.

Komatsu in December
Year & climate table

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Komatsu

How warm the nights get in each month, from the mean night-time low. Tap a month for details.

  • Cold 0–8°
  • Cool 8–15°
  • Pleasant 15–20°
  • Warm 20–24°
  • Hot 24° and more
  • muggy month (15+ muggy days)

PleasantOctober: nights around 16°. Ideal for sleeping, often with the window open. Muggy on about 2 days (dew point 18 °C or more).

The coolest nights are in February (3°), the warmest in August (25°). Tropical nights of 20 °C and more are the rule from July to September; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) from May to June and in October. Nights fall below 8 °C on average from December to March, so the room should be heated. It is muggy (dew point 18 °C or more) on about 94 days a year, mostly from July to September.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 22°Night 16°Sea 22°
DayNightSea
MonthScoreDayNightSeaSunRain daysRain mm
JanuaryJan08°3°13.1°3.0 h24217
FebruaryFeb18°3°11.3°3.3 h19147
MarchMar812°5°10.8°4.8 h17152
AprilApr1817°10°12.6°6.2 h13133
MayMay3622°15°16.2°6.6 h12133
JuneJun6225°19°20.3°5.2 h13160
JulyJul7129°24°24.3°5.2 h15202
AugustAug7931°25°27.2°6.7 h14159
SeptemberSep7227°21°25.6°5.0 h15194
OctoberOct4822°16°22.2°4.9 h14163
NovemberNov1116°10°19.0°3.7 h17179
DecemberDec011°5°16.0°2.7 h23241

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences

36.40° N, 136.45° E · 7 m · Asia/Tokyo

Sea temperature
Swimming calendar

Sea temperature in Komatsu

Monthly sea surface temperature with the range of cooler and warmer years.

Sea in October22.2°Crefreshing

8 in 10 years: 21.2 – 23.4 °C

Swimming season: Jun – Oct

  • cold
  • fresh
  • refreshing
  • pleasant
  • warm
  • very warm
OctoberMean sea temperature 22.2°8 in 10 years 21.2° – 23.4°
20°
Mean sea temperature8 in 10 years20 °C – comfortable for swimming

The sea temperature in Komatsu ranges from 10.8 °C in March to 27.2 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.

From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 26.3 and 28.4 °C.

Sea temperature by month
MonthAverageCool yearWarm yearFeels
JanuaryJan13.1°12.5°14.0°cold
FebruaryFeb11.3°10.7°12.3°cold
MarchMar10.8°10.3°11.5°cold
AprilApr12.6°11.5°13.4°cold
MayMay16.2°15.5°17.2°cold
JuneJun20.3°19.4°21.0°refreshing
JulyJul24.3°22.9°25.9°pleasant
AugustAug27.2°26.3°28.4°warm
SeptemberSep25.6°24.1°27.5°pleasant
OctoberOct22.2°21.2°23.4°refreshing
NovemberNov19.0°18.5°19.5°fresh
DecemberDec16.0°14.8°16.8°cold
Sunshine
Sunshine

Sunshine hours in Komatsu

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

Per year
1,750 hours
Sunniest month
Aug · 6.7 h a day
Least sunshine
Dec · 2.7 h a day
OctoberSunshine 4.9 hDaylight 11.3 hShare of daylight 43 %
SunshineDaylight

In October, the sun shines for about 4.9 of 11.3 hours of daylight in Komatsu, 43 % of the daylight hours.

Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.

Rain
Rain

Rain in Komatsu: rainy days and rainfall

A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.

Per year
2,079 mm on 195 days
Wettest month
Dec · 241 mm
Driest month
Apr · 133 mm
OctoberRainy days 14Rainfall 163 mm

In October, Komatsu has about 14 rainy days with 163 mm of rain in total.

UV index
Sun protection

UV index in Komatsu

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October
5 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.

The sun is strongest in June (UV 10).

Minutes until sunburn in October

Very fair skin
about 25 min
Fair skin
about 35 min
Light brown skin
about 50 min
Olive skin
about 60 min

Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.

Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.

Wind & clouds
Wind & clouds

Wind and clouds in Komatsu

How breezy and how cloudy Komatsu is through the year. Tap a month to select it on the whole page.

Wind

Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.

Year average
21 km/h · moderate breeze
Windiest month
Dec · 25 km/h
Calmest month
Aug · 17 km/h
OctoberWind 20 km/hBeaufort 4
20
WindBeaufort 4

In October, the wind in Komatsu typically peaks at 20 km/h during the day: Beaufort 4, moderate breeze.

Breezy months for windsurfing and kiting

From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Oct – Apr.

Clouds

Average share of the sky covered by cloud, day and night.

Year average
65 % · variable cloud
Clearest month
Oct · 58 %
Cloudiest month
Jun · 72 %
OctoberCloud cover 58 %Sunshine 4.9 h

In October, cloud covers on average 58 % of the sky over Komatsu: variable cloud, with about 4.9 hours of sunshine a day.

Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.

Heat & humidity
Heat & humidity

Heat and humidity in Komatsu

How often the day gets hot in Komatsu (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.

Hot days a year
39 days
Hottest month
Aug · 31 °C
Hot months
Aug

Heat calendar

  • pleasant
  • some hot or muggy days
  • often muggy
  • often hot
  • hot and muggy
OctoberHot days (30 °C+) 0Daytime high 22 °C

In October, Komatsu has about 0 hot days, with an average daytime high of 22 °C: pleasant. Heat plays no part this month.

Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year

Snow
Snow

Snow in Komatsu

When Komatsu is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.

Snow days a year
27 days
Fresh snow a year
103 cm
Snowy months
Jan – Feb

Snow calendar

  • hardly any
  • possible
  • likely
  • very likely
OctoberDays with fresh snow 0Fresh snow 0 cmChance of snow 0 / 100

In October, it hardly ever snows in Komatsu.

Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.

Planning a trip to Komatsu

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

Komatsu in the school holidays

How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.

Komatsu has its best school-holiday weather during the summer holidays (score 76) and its weakest during the Christmas holidays (score 0).

  • Easter holidays

    Mar – Apr

    15

    Poor

    • 15 °C by day
    • Sea 12 °C
    • 5.8 h of sun a day
    • 14 rainy days a month

    Keep in mind: Frequent rain, Snow

  • May half-term

    May – Jun

    41

    Fair

    • 22 °C by day
    • Sea 17 °C
    • 6.3 h of sun a day
    • 12 rainy days a month

    Keep in mind: Frequent rain

  • Summer holidays

    Jul – Aug

    76

    GoodBest holidays

    • 30 °C by day
    • Sea 26 °C
    • 6.2 h of sun a day
    • 14 rainy days a month

    Keep in mind: Frequent rain, Storm season

  • October half-term

    Oct

    48

    Fair

    • 22 °C by day
    • Sea 22 °C
    • 4.9 h of sun a day
    • 14 rainy days a month

    Keep in mind: Frequent rain, Storm season

  • Christmas holidays

    Dec – Jan

    0

    Poor

    • 9 °C by day
    • Sea 15 °C
    • 2.9 h of sun a day
    • 24 rainy days a month

    Keep in mind: Frequent rain, Snow

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
about 11 h 50 min
Distance
9,380 km
Time zone
UTC+9
Jet lag
About 8 days (8 h east)

Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.

Most routes need a change of planes, which adds time.

Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.

Good to know: Japan

Currency
Japanese Yen (JPY)
Language
Japanese
Sockets
Type A, B · 100 V
Traffic
Drives on the left
Dialling code
+81

UK plugs need a travel adapter

Only 100 V: chargers marked 100–240 V work, other devices need a voltage converter.

Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.

Storm season

Komatsu lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.

  1. January
  2. February
  3. March
  4. April
  5. May
  6. June: Season
  7. July: Season
  8. August: Peak
  9. September: Peak
  10. October: Peak
  11. November: Season
  12. December

Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.

Compare & alternatives

Compare with another place
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Komatsu compared

Put Komatsu side by side with another destination.

Nearby:
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Komatsu vs Kanazawa

In October the holiday weather in Komatsu and Kanazawa is about equally good (score 48 vs 49). During the day it is about as warm in Kanazawa as in Komatsu. The sea is about equally warm.

Komatsu vs Kanazawa, in October
in OctoberKomatsuKanazawa
Holiday weather score4849
Daytime high22°22°
Sea22°22°
Sunshine5 h5 h
Rainy days1413
Best timeJul – SepApr – Jun, Sep – Oct

Through the year

OctoberKomatsu 22°Kanazawa 22°
KomatsuKanazawa
Go to Kanazawa
Best places in the country
Ranking

Japan in October: the best places

In October, Komatsu ranks 29 among the 31 nearest destinations in this country.

  1. Nagoya24°75
  2. 2Toyota24°75
  3. 3Kyoto23°75
  4. 4Okazaki23°75
  5. 5Nara23°75
  6. 6Osaka24°75
  7. 7Kashihara23°75
  8. 8Kobe24°23°75
  9. 29KomatsuThis page22°22°48
All destinations: Japan
Places nearby

Near Komatsu

Other destinations close by.

Places with a similar climate

Places with a climate like Komatsu

Destinations whose weather through the year is closest to Komatsu's – good alternatives.

  1. 84 % similar62NiigataJapan21°22°Best time: Apr – Jun, Sep – Oct
  2. 82 % similar67TottoriJapan23°22°Best time: Apr – Jun, Oct
  3. 77 % similar41SadoJapan21°22°Best time: Jul – Sep
  4. 75 % similar72MatsueJapan22°23°Best time: Apr – Jun, Oct

Frequently asked questions about Komatsu

When is the best time to visit Komatsu?

The best time to visit Komatsu is from July to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

How warm is the sea in Komatsu?

The sea temperature in Komatsu ranges from 10.8 °C in March to 27.2 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to October.

Can you swim in Komatsu in October?

Yes. In October the sea averages 22.2 °C – refreshing for a swim.

What is the warmest month in Komatsu?

August is the warmest month, with average highs of 31 °C and nights around 25 °C. January is the coolest month at 8 °C.

When does it rain most in Komatsu?

The wettest month is December with 241 mm of precipitation. The driest month is April with 133 mm.

How many hours of sunshine does Komatsu get?

Komatsu gets around 1,750 hours of sunshine a year. The sunniest month is August with 6.7 hours a day; in December there are 2.7 hours a day.

What time zone is Komatsu in?

Komatsu is on UTC+9 all year.

How long is the flight from London to Komatsu?

A nonstop flight from London to Komatsu takes about 11 h 50 min, for a straight-line distance of about 9,380 km. Most routes need a change of planes, which adds time.

When is typhoon season in Komatsu?

Komatsu lies in an area that Pacific typhoons can reach. The typhoon season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.

Which school holidays are best for Komatsu?

Komatsu has its best school-holiday weather during the summer holidays (score 76) and its weakest during the Christmas holidays (score 0). Holiday ratings (0–100): Easter holidays 15, May half-term 41, summer holidays 76, October half-term 48, Christmas holidays 0.