AI-generatedIzu at a glance
- Best time
- Jun – Sep
- Warmest month
- Aug · 30°
- Warmest sea
- Aug · 26.4°
- Sunshine a year
- 2,100 h
- Rain a year
- 2,076 mm
- Climate
- Temperate
- Time zone
- UTC+9
- Elevation
- 55 m
Climate in Izu
Izu has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 30 °C, while January is the coolest at 11 °C. With around 2,100 hours of sunshine a year, Izu is moderately sunny; August is the sunniest month with 6.5 hours a day.
Holiday weather through the year
Best time to visit Izu
The best time to visit Izu is from June to September. In August and September, though, the typhoon season is at its peak: check the forecast before you go. The sea reaches 26.4 °C in August, but rain or cool air gets in the way of a classic beach holiday. For sightseeing, day trips and hiking, conditions are most comfortable in November. Rain is frequent from March to May and in October; the wettest month is June with 252 mm.
Izu through the seasons
How the weather changes over the seasons, with averages for each.
Izu in spring
Mar – May
Poor
- 14–23 °C by day
- Sea 18 °C
- 6.2 h of sun a day
- 39 rainy days in all
Izu in summer
Jun – Aug
Good
- 25–30 °C by day
- Sea 24 °C
- 5.6 h of sun a day
- 47 rainy days in all
Izu in autumn
Sep – Nov
Fair
- 17–27 °C by day
- Sea 24 °C
- 5.1 h of sun a day
- 39 rainy days in all
Izu in winter
Dec – Feb
Poor
- 11–13 °C by day
- Sea 17 °C
- 6.1 h of sun a day
- 24 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Nov
15–28 °C and not too much rain
Rainy months
Mar – May, Oct
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Izu for you.
Your best months: July – September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: June – September
October is the peak of the typhoon season Hurricane season
Where to go in OctoberSea temperature in October
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 18°
- Midday, 13:00: about 22°
- Afternoon, 16:00: about 21°
- Evening, 20:00: about 18°
- Night, 23:00: about 17°
05:4917:11
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 05:33–06:23 · evening 16:37–17:26
- Blue hour
- Morning 05:23–05:33 · evening 17:26–17:36
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 Izu compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 25° at the start of the month to 20° at the end. The sea cools from 25° to 22°. The days get 1.0 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 25° | 20° |
| Night-time low | 18° | 13° |
| Sea | 25° | 22° |
| Daylight | 11.9 h | 10.8 h |
What is the weather like in Izu in October?
In October, Izu is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sea averages 23.6 °C – pleasant for swimming. Expect around 4.8 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 232 mm in total. All in all, October is a so-so month for a holiday in Izu.
More details for October
- Daylight
- 11 h 22 min05:49 – 17:11
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 60 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+9offset from UTC
How the score comes together
- Temperatureweight 35 %55 %
- Seaweight 25 %94 %
- Sunshineweight 20 %30 %
- 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 Izu
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Izu: score 75 against 55. In August, days are 8 °C warmer than in October. The sea is 3 °C warmer in August. August has one more rainy day. The sun shines 2 hours longer a day in August.
| Month | October | August |
|---|---|---|
| Holiday weather score | 55 | 75better |
| Daytime high | 22° | 30° |
| Night-time low | 15° | 23° |
| Sea | 23.6° | 26.4° |
| Sunshine | 4.8 h | 6.5 hbetter |
| Rainy days | 14better | 15 |
| Rainfall | 232 mm | 171 mmbetter |
| Muggy days | 5better | 31 |
Based on the climate averages 1996–2025.
Izu month by month
The typical weather for every month at a glance.
26January11° · Sea 17° · 6.1 h
In January, Izu is cool: daytime highs average 11 °C, and nights cool down to about 3 °C. The sea averages 16.8 °C – swimming is only for the hardy. Expect around 6.1 hours of sunshine a day. Rain falls on about 7 days, adding up to 84 mm. All in all, January is not an ideal month for a holiday in Izu.
Izu in January23February11° · Sea 16° · 6.1 h
In February, Izu is cool: daytime highs average 11 °C, and nights cool down to about 3 °C. The sea averages 15.9 °C – swimming is only for the hardy. Expect around 6.1 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 106 mm in total. All in all, February is not an ideal month for a holiday in Izu.
Izu in February17March14° · Sea 16° · 6.0 h
In March, Izu is cool: daytime highs average 14 °C, and nights cool down to about 6 °C. The sea averages 16.1 °C – swimming is only for the hardy. Expect around 6.0 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 179 mm in total. All in all, March is not an ideal month for a holiday in Izu.
Izu in March19April19° · Sea 17° · 6.3 h
In April, Izu is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. The sea averages 17.2 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.3 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 179 mm in total. All in all, April is not an ideal month for a holiday in Izu.
Izu in April49May23° · Sea 19° · 6.3 h
In May, Izu is warm: daytime highs average 23 °C, and nights cool down to about 14 °C. The sea averages 19.3 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.3 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 199 mm in total. All in all, May is a so-so month for a holiday in Izu.
Izu in May60June25° · Sea 22° · 4.7 h
In June, Izu is warm: daytime highs average 25 °C, and nights cool down to about 18 °C. The sea averages 21.7 °C – refreshing for a swim. Expect around 4.7 hours of sunshine a day. It rains often – on about 16 days, adding up to 252 mm. The air is often humid and muggy. All in all, June is a good month for a holiday in Izu.
Izu in June73July29° · Sea 24° · 5.6 h
In July, Izu is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 24.4 °C – pleasant for swimming. Expect around 5.6 hours of sunshine a day. It rains often – on about 15 days, adding up to 232 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 Izu.
Izu in July75August30° · Sea 26° · 6.5 h
In August, Izu is hot: daytime highs average 30 °C, and even at night it stays warm at around 23 °C. The sea averages 26.4 °C – lovely and warm for swimming. The sun shines for around 6.5 hours a day. It rains often – on about 15 days, adding up to 171 mm. 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 Izu.
Izu in August71September27° · Sea 26° · 5.1 h
In September, Izu is hot: daytime highs average 27 °C, and even at night it stays warm at around 20 °C. The sea averages 25.8 °C – pleasant for swimming. Expect around 5.1 hours of sunshine a day. It rains often – on about 15 days, adding up to 222 mm. The air is often humid and muggy. All in all, September is a good month for a holiday in Izu.
Izu in September55October22° · Sea 24° · 4.8 h
In October, Izu is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sea averages 23.6 °C – pleasant for swimming. Expect around 4.8 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 232 mm in total. All in all, October is a so-so month for a holiday in Izu.
Izu in October34November17° · Sea 21° · 5.4 h
In November, Izu is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 21.3 °C – refreshing for a swim. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 139 mm in total. All in all, November is not an ideal month for a holiday in Izu.
Izu in November31December13° · Sea 19° · 6.0 h
In December, Izu is cool: daytime highs average 13 °C, and nights cool down to about 5 °C. The sea averages 18.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.0 hours of sunshine a day. Rain falls on about 8 days, adding up to 83 mm. All in all, December is not an ideal month for a holiday in Izu.
Izu in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Izu
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°
- muggy month (15+ muggy days)
PleasantOctober: nights around 15°. 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 (3°), the warmest in August (23°). 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) in 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 108 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 | 26 | 11° | 3° | 16.8° | 6.1 h | 7 | 84 |
| FebruaryFeb | 23 | 11° | 3° | 15.9° | 6.1 h | 9 | 106 |
| MarchMar | 17 | 14° | 6° | 16.1° | 6.0 h | 13 | 179 |
| AprilApr | 19 | 19° | 10° | 17.2° | 6.3 h | 13 | 179 |
| MayMay | 49 | 23° | 14° | 19.3° | 6.3 h | 13 | 199 |
| JuneJun | 60 | 25° | 18° | 21.7° | 4.7 h | 16 | 252 |
| JulyJul | 73 | 29° | 22° | 24.4° | 5.6 h | 15 | 232 |
| AugustAug | 75 | 30° | 23° | 26.4° | 6.5 h | 15 | 171 |
| SeptemberSep | 71 | 27° | 20° | 25.8° | 5.1 h | 15 | 222 |
| OctoberOct | 55 | 22° | 15° | 23.6° | 4.8 h | 14 | 232 |
| NovemberNov | 34 | 17° | 10° | 21.3° | 5.4 h | 11 | 139 |
| DecemberDec | 31 | 13° | 5° | 18.8° | 6.0 h | 8 | 83 |
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
34.97° N, 138.95° E · 55 m · Asia/Tokyo
Sea temperature
Sea temperature in Izu
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 22.2 – 24.6 °C
Swimming season: Jun – Nov
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Izu ranges from 15.9 °C in February to 26.4 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
From October to March 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 25.4 and 27.2 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 16.8° | 15.5° | 18.3° | cold |
| FebruaryFeb | 15.9° | 14.7° | 17.2° | cold |
| MarchMar | 16.1° | 14.8° | 17.0° | cold |
| AprilApr | 17.2° | 15.8° | 18.3° | fresh |
| MayMay | 19.3° | 18.3° | 20.3° | fresh |
| JuneJun | 21.7° | 20.8° | 22.6° | refreshing |
| JulyJul | 24.4° | 23.5° | 25.8° | pleasant |
| AugustAug | 26.4° | 25.4° | 27.2° | warm |
| SeptemberSep | 25.8° | 24.5° | 27.1° | pleasant |
| OctoberOct | 23.6° | 22.2° | 24.6° | pleasant |
| NovemberNov | 21.3° | 20.2° | 22.3° | refreshing |
| DecemberDec | 18.8° | 17.6° | 20.0° | fresh |
Sunshine
Sunshine hours in Izu
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 4.8 of 11.4 hours of daylight in Izu, 42 % 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 in Izu: 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, Izu has about 14 rainy days with 232 mm of rain in total.
UV index
UV index in Izu
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 11).
Minutes until sunburn in October
- Very fair skin
- about 25 min
- Fair skin
- about 30 min
- Light brown skin
- about 45 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 & clouds
Wind and clouds in Izu
How breezy and how cloudy Izu 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 Izu typically peaks at 15 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 60 % of the sky over Izu: variable cloud, with about 4.8 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 and humidity in Izu
How often the day gets hot in Izu (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, Izu has about 0 hot days, with an average daytime high of 22 °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 Izu
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Izu 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.
Izu has its best school-holiday weather during the summer holidays (score 74) and its weakest during the Easter holidays (score 18).
- 18
Easter holidays
Mar – Apr
Poor
- 18 °C by day
- Sea 17 °C
- 6.2 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
- 51
May half-term
May – Jun
Fair
- 23 °C by day
- Sea 20 °C
- 6.0 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
- 74
Summer holidays
Jul – Aug
GoodBest holidays
- 30 °C by day
- Sea 26 °C
- 6.2 h of sun a day
- 15 rainy days a month
Keep in mind: Storm season
- 55
October half-term
Oct
Fair
- 22 °C by day
- Sea 24 °C
- 4.8 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain, Storm season
- 29
Christmas holidays
Dec – Jan
Poor
- 12 °C by day
- Sea 18 °C
- 6.1 h of sun a day
- 7 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h 5 min
- Distance
- 9,620 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
Izu 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
Compare with another place
Izu compared
Put Izu side by side with another destination.
Izu vs Ito
In October the holiday weather in Izu and Ito is about equally good (score 55 vs 53). During the day it is about as warm in Ito as in Izu. The sea is about equally warm.
| in October | Izu | Ito |
|---|---|---|
| Holiday weather score | 55 | 53 |
| Daytime high | 22° | 22° |
| Sea | 24° | 24° |
| Sunshine | 5 h | 5 h |
| Rainy days | 14 | 14 |
| Best time | Jun – Sep | Jul – Sep |
Through the year
Best places in the country
Japan in October: the best places
In October, Izu ranks 28 among the 31 nearest destinations in this country.
- Okazaki23°75
- 2Toyohashi24°24°72
- 3Iwata24°24°69
- 4Hamamatsu24°24°69
- 5Takasaki22°68
- 6Karuizawa18°68
- 7Maebashi22°68
- 8Sano22°68
- 28IzuThis page22°24°55
Places nearby
Near Izu
Other destinations close by.
Places with a similar climate
Places with a climate like Izu
Destinations whose weather through the year is closest to Izu's – good alternatives.
Frequently asked questions about Izu
When is the best time to visit Izu?
The best time to visit Izu is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Izu?
The sea temperature in Izu ranges from 15.9 °C in February to 26.4 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
Can you swim in Izu in October?
Yes. In October the sea averages 23.6 °C – pleasant for swimming.
What is the warmest month in Izu?
August is the warmest month, with average highs of 30 °C and nights around 23 °C. January is the coolest month at 11 °C.
When does it rain most in Izu?
Rain is frequent from March to May and in October; the wettest month is June with 252 mm. The driest month is December with 83 mm.
How many hours of sunshine does Izu get?
Izu gets around 2,100 hours of sunshine a year. The sunniest month is August with 6.5 hours a day; in June there are 4.7 hours a day.
What time zone is Izu in?
Izu is on UTC+9 all year.
How long is the flight from London to Izu?
A nonstop flight from London to Izu takes about 12 h 5 min, for a straight-line distance of about 9,620 km. Most routes need a change of planes, which adds time.
When is typhoon season in Izu?
Izu 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 Izu?
Izu has its best school-holiday weather during the summer holidays (score 74) and its weakest during the Easter holidays (score 18). Holiday ratings (0–100): Easter holidays 18, May half-term 51, summer holidays 74, October half-term 55, Christmas holidays 29.