AI-generatedSasebo at a glance
- Best time
- Apr – May, Oct – Nov
- Warmest month
- Aug · 32°
- Warmest sea
- Aug · 27.3°
- Sunshine a year
- 1,830 h
- Rain a year
- 1,740 mm
- Climate
- Temperate
- Time zone
- UTC+9
- Elevation
- 8 m
Climate in Sasebo
Sasebo has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 32 °C, while January is the coolest at 11 °C. With around 1,830 hours of sunshine a year, Sasebo is moderately sunny; May is the sunniest month with 6.3 hours a day.
Holiday weather through the year
Best time to visit Sasebo
The best time to visit Sasebo is from April to May and from October to November. In October, though, the typhoon season is at its peak: check the forecast before you go. For a beach holiday – sea from 21 °C, warm and mostly dry – go in October. For sightseeing, day trips and hiking, conditions are most comfortable from March to May and from October to November. Rain is frequent from June to September; the wettest month is June with 292 mm.
Sasebo through the seasons
How the weather changes over the seasons, with averages for each.
Sasebo in spring
Mar – May
Good
- 16–25 °C by day
- Sea 17 °C
- 5.8 h of sun a day
- 31 rainy days in all
Sasebo in summer
Jun – Aug
Fair
- 27–32 °C by day
- Sea 25 °C
- 5.3 h of sun a day
- 48 rainy days in all
Sasebo in autumn
Sep – Nov
Good
- 19–29 °C by day
- Sea 24 °C
- 5.2 h of sun a day
- 28 rainy days in all
Sasebo in winter
Dec – Feb
Fair
- 11–13 °C by day
- Sea 16 °C
- 3.7 h of sun a day
- 25 rainy days in all
Which month for what?
Beach & swimming
Oct
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Mar – May, Oct – Nov
15–28 °C and not too much rain
Rainy months
Jun – Sep
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Sasebo for you.
Your best months: May, October
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Excellent
Best time to visit: April – May, October – November
October is the peak of the typhoon season Hurricane season
Where to go in OctoberSea temperature in October
Good forBeach & swimmingSightseeing & walks
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 19°
- Midday, 13:00: about 24°
- Afternoon, 16:00: about 24°
- Evening, 20:00: about 20°
- Night, 23:00: about 19°
06:2417:49
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 06:09–06:58 · evening 17:16–18:04
- Blue hour
- Morning 05:59–06:09 · evening 18:04–18:14
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 Sasebo compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 27° at the start of the month to 21° at the end. The sea cools from 25° to 22°. The days get 1.0 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 27° | 21° |
| Night-time low | 19° | 14° |
| Sea | 25° | 22° |
| Daylight | 11.9 h | 10.9 h |
What is the weather like in Sasebo in October?
In October, Sasebo is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 23.8 °C – pleasant for swimming. Expect around 5.7 hours of sunshine a day. Rain falls on about 7 days, adding up to 102 mm. All in all, October is an excellent month for a holiday in Sasebo.
More details for October
- Daylight
- 11 h 25 min06:24 – 17:49
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 48 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+9offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %45 %
- Few rainy daysweight 30 %77 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
Compare two months in Sasebo
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and May bring similar holiday weather to Sasebo (score 82 and 78). In May, days are 1 °C warmer than in October. The sea is 5 °C cooler in May. May has 3 more rainy days. The sun shines an hour longer a day in May.
| Month | October | May |
|---|---|---|
| Holiday weather score | 82 | 78 |
| Daytime high | 24° | 25° |
| Night-time low | 16° | 16° |
| Sea | 23.8° | 18.8° |
| Sunshine | 5.7 h | 6.3 hbetter |
| Rainy days | 7better | 10 |
| Rainfall | 102 mmbetter | 155 mm |
| Muggy days | 5 | 3better |
Based on the climate averages 1996–2025.
Sasebo month by month
The typical weather for every month at a glance.
35January11° · Sea 16° · 3.2 h
In January, Sasebo is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sea averages 15.9 °C – swimming is only for the hardy. The sun is scarce, with only about 3.2 hours a day. Rain falls on about 8 days, adding up to 60 mm. All in all, January is not an ideal month for a holiday in Sasebo.
Sasebo in January44February12° · Sea 15° · 4.3 h
In February, Sasebo is cool: daytime highs average 12 °C, and nights cool down to about 5 °C. The sea averages 14.7 °C – swimming is only for the hardy. Expect around 4.3 hours of sunshine a day. Rain falls on about 9 days, adding up to 77 mm. All in all, February is a so-so month for a holiday in Sasebo.
Sasebo in February62March16° · Sea 15° · 5.1 h
In March, Sasebo is cool: daytime highs average 16 °C, and nights cool down to about 8 °C. The sea averages 15.1 °C – swimming is only for the hardy. Expect around 5.1 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 114 mm in total. All in all, March is a good month for a holiday in Sasebo.
Sasebo in March77April20° · Sea 16° · 6.1 h
In April, Sasebo is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. The sea averages 16.4 °C – swimming is only for the hardy. Expect around 6.1 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 134 mm in total. All in all, April is a good month for a holiday in Sasebo.
Sasebo in April78May25° · Sea 19° · 6.3 h
In May, Sasebo is warm: daytime highs average 25 °C, and nights cool down to about 16 °C. The sea averages 18.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.3 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 155 mm in total. All in all, May is a good month for a holiday in Sasebo.
Sasebo in May58June27° · Sea 22° · 4.3 h
In June, Sasebo is hot: daytime highs average 27 °C, and even at night it stays warm at around 20 °C. The sea averages 21.7 °C – refreshing for a swim. Expect around 4.3 hours of sunshine a day. It rains often – on about 16 days, adding up to 292 mm. The air is often humid and muggy. All in all, June is a so-so month for a holiday in Sasebo.
Sasebo in June36July31° · Sea 25° · 5.3 h
In July, Sasebo is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 25.1 °C – pleasant for swimming. Expect around 5.3 hours of sunshine a day. It rains often – on about 17 days, adding up to 269 mm. On about 21 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is not an ideal month for a holiday in Sasebo.
Sasebo in July33August32° · Sea 27° · 6.3 h
In August, Sasebo is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 27.3 °C – lovely and warm for swimming. Expect around 6.3 hours of sunshine a day. It rains often – on about 15 days, adding up to 199 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Sasebo.
Sasebo in August55September29° · Sea 26° · 5.4 h
In September, Sasebo is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 26.1 °C – lovely and warm for swimming. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 180 mm in total. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in Sasebo.
Sasebo in September82October24° · Sea 24° · 5.7 h
In October, Sasebo is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 23.8 °C – pleasant for swimming. Expect around 5.7 hours of sunshine a day. Rain falls on about 7 days, adding up to 102 mm. All in all, October is an excellent month for a holiday in Sasebo.
Sasebo in October76November19° · Sea 21° · 4.5 h
In November, Sasebo is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 21.0 °C – refreshing for a swim. Expect around 4.5 hours of sunshine a day. Rain falls on about 8 days, adding up to 93 mm. All in all, November is a good month for a holiday in Sasebo.
Sasebo in November50December13° · Sea 18° · 3.6 h
In December, Sasebo is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. The sea averages 18.2 °C – bracing, so a wetsuit helps for longer swims. The sun is scarce, with only about 3.6 hours a day. Rain falls on about 8 days, adding up to 66 mm. All in all, December is a so-so month for a holiday in Sasebo.
Sasebo in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Sasebo
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 5 days (dew point 18 °C or more).
The coolest nights are in January (4°), the warmest in August (25°). Tropical nights of 20 °C and more are the rule from June to September; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in May and in October. Nights fall below 8 °C on average from December to February, so the room should be heated. It is muggy (dew point 18 °C or more) on about 116 days a year, mostly from June to September.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 35 | 11° | 4° | 15.9° | 3.2 h | 8 | 60 |
| FebruaryFeb | 44 | 12° | 5° | 14.7° | 4.3 h | 9 | 77 |
| MarchMar | 62 | 16° | 8° | 15.1° | 5.1 h | 10 | 114 |
| AprilApr | 77 | 20° | 12° | 16.4° | 6.1 h | 10 | 134 |
| MayMay | 78 | 25° | 16° | 18.8° | 6.3 h | 10 | 155 |
| JuneJun | 58 | 27° | 20° | 21.7° | 4.3 h | 16 | 292 |
| JulyJul | 36 | 31° | 24° | 25.1° | 5.3 h | 17 | 269 |
| AugustAug | 33 | 32° | 25° | 27.3° | 6.3 h | 15 | 199 |
| SeptemberSep | 55 | 29° | 22° | 26.1° | 5.4 h | 13 | 180 |
| OctoberOct | 82 | 24° | 16° | 23.8° | 5.7 h | 7 | 102 |
| NovemberNov | 76 | 19° | 11° | 21.0° | 4.5 h | 8 | 93 |
| DecemberDec | 50 | 13° | 6° | 18.2° | 3.6 h | 8 | 66 |
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
33.17° N, 129.73° E · 8 m · Asia/Tokyo
Sea temperature in Sasebo
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 22.8 – 24.5 °C
Swimming season: Jun – Nov
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Sasebo ranges from 14.7 °C in February to 27.3 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
From November 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 26.0 and 28.5 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 15.9° | 15.2° | 16.7° | cold |
| FebruaryFeb | 14.7° | 13.9° | 15.4° | cold |
| MarchMar | 15.1° | 14.2° | 15.8° | cold |
| AprilApr | 16.4° | 15.4° | 17.3° | cold |
| MayMay | 18.8° | 18.2° | 19.5° | fresh |
| JuneJun | 21.7° | 20.9° | 22.5° | refreshing |
| JulyJul | 25.1° | 23.8° | 26.1° | pleasant |
| AugustAug | 27.3° | 26.0° | 28.5° | warm |
| SeptemberSep | 26.1° | 25.4° | 27.0° | warm |
| OctoberOct | 23.8° | 22.8° | 24.5° | pleasant |
| NovemberNov | 21.0° | 20.3° | 21.7° | refreshing |
| DecemberDec | 18.2° | 17.6° | 18.7° | fresh |
Sunshine hours in Sasebo
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.7 of 11.4 hours of daylight in Sasebo, 50 % 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 in Sasebo: 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.
In October, Sasebo has about 7 rainy days with 102 mm of rain in total.
UV index in Sasebo
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 6 · highSeek shade around midday; sunscreen SPF 30+, hat and sunglasses.
The sun is strongest in June (UV 11).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 30 min
- Light brown skin
- about 40 min
- Olive skin
- about 55 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 and clouds in Sasebo
How breezy and how cloudy Sasebo 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.
In October, the wind in Sasebo typically peaks at 17 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 48 % of the sky over Sasebo: variable cloud, with about 5.7 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 and humidity in Sasebo
How often the day gets hot in Sasebo (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Sasebo has about 1 hot day, with an average daytime high of 24 °C: some hot or muggy days. Single hot or muggy days are possible; a hat and water bottle are enough.
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
Planning a trip to Sasebo
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Sasebo 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.
Sasebo has its best school-holiday weather during October half-term (score 82) and its weakest during the summer holidays (score 34).
- 73
Easter holidays
Mar – Apr
Good
- 19 °C by day
- Sea 16 °C
- 5.8 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 74
May half-term
May – Jun
Good
- 25 °C by day
- Sea 19 °C
- 5.9 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 34
Summer holidays
Jul – Aug
Poor
- 32 °C by day
- Sea 27 °C
- 5.9 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain, Storm season
- 82
October half-term
Oct
ExcellentBest holidays
- 24 °C by day
- Sea 24 °C
- 5.7 h of sun a day
- 7 rainy days a month
Good for: Beach & swimming, Sightseeing & walks
Keep in mind: Storm season
- 43
Christmas holidays
Dec – Jan
Fair
- 12 °C by day
- Sea 17 °C
- 3.4 h of sun a day
- 8 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 11 h 50 min
- Distance
- 9,420 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.
Storm season
Sasebo 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.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Sasebo compared
Put Sasebo side by side with another destination.
Sasebo vs Nagasaki
In October the holiday weather in Sasebo and Nagasaki is about equally good (score 82 vs 81). During the day it is about as warm in Nagasaki as in Sasebo. The sea is about equally warm.
| in October | Sasebo | Nagasaki |
|---|---|---|
| Holiday weather score | 82 | 81 |
| Daytime high | 24° | 24° |
| Sea | 24° | 24° |
| Sunshine | 6 h | 6 h |
| Rainy days | 7 | 8 |
| Best time | Apr – May, Oct – Nov | Apr – May, Oct – Nov |
Through the year
Japan in October: the best places
In October, Sasebo ranks 1 among the 31 nearest destinations in this country.
- SaseboThis page24°24°82
- 2Nagasaki24°24°81
- 3Fukuoka24°23°81
- 4Hiroshima24°23°81
- 5Kure23°23°81
- 6Kumamoto24°23°80
- 7Shimonoseki24°23°80
- 8Yamaguchi23°80
Near Sasebo
Other destinations close by.
Places with a climate like Sasebo
Destinations whose weather through the year is closest to Sasebo's – good alternatives.
Frequently asked questions about Sasebo
When is the best time to visit Sasebo?
The best time to visit Sasebo is from April to May and from October to November. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Sasebo?
The sea temperature in Sasebo ranges from 14.7 °C in February to 27.3 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
Can you swim in Sasebo in October?
Yes. In October the sea averages 23.8 °C – pleasant for swimming.
What is the warmest month in Sasebo?
August is the warmest month, with average highs of 32 °C and nights around 25 °C. January is the coolest month at 11 °C.
When does it rain most in Sasebo?
Rain is frequent from June to September; the wettest month is June with 292 mm. The driest month is January with 60 mm.
How many hours of sunshine does Sasebo get?
Sasebo gets around 1,830 hours of sunshine a year. The sunniest month is May with 6.3 hours a day; in January there are 3.2 hours a day.
What time zone is Sasebo in?
Sasebo is on UTC+9 all year.
How long is the flight from London to Sasebo?
A nonstop flight from London to Sasebo takes about 11 h 50 min, for a straight-line distance of about 9,420 km. Most routes need a change of planes, which adds time.
When is typhoon season in Sasebo?
Sasebo 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 Sasebo?
Sasebo has its best school-holiday weather during October half-term (score 82) and its weakest during the summer holidays (score 34). Holiday ratings (0–100): Easter holidays 73, May half-term 74, summer holidays 34, October half-term 82, Christmas holidays 43.