AI-generatedIwata at a glance
- Best time
- Mar – May, Oct – Nov
- Warmest month
- Aug · 32°
- Warmest sea
- Aug · 27.0°
- Sunshine a year
- 2,150 h
- Rain a year
- 2,016 mm
- Climate
- Temperate
- Time zone
- UTC+9
- Elevation
- 5 m
Climate in Iwata
Iwata 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 2,150 hours of sunshine a year, Iwata is moderately sunny; August is the sunniest month with 6.6 hours a day.
Holiday weather through the year
Best time to visit Iwata
The best time to visit Iwata is from March to May and from October to November. In October, though, the typhoon season is at its peak: check the forecast before you go. The sea reaches 27.0 °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 from March to April and in November. Rain is frequent from June to September; the wettest month is July with 275 mm.
Iwata through the seasons
How the weather changes over the seasons, with averages for each.
Iwata in spring
Mar – May
Good
- 15–24 °C by day
- Sea 18 °C
- 6.4 h of sun a day
- 35 rainy days in all
Iwata in summer
Jun – Aug
Fair
- 27–32 °C by day
- Sea 25 °C
- 5.6 h of sun a day
- 50 rainy days in all
Iwata in autumn
Sep – Nov
Good
- 19–29 °C by day
- Sea 24 °C
- 5.4 h of sun a day
- 38 rainy days in all
Iwata in winter
Dec – Feb
Fair
- 11–13 °C by day
- Sea 17 °C
- 6.1 h of sun a day
- 20 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Mar – Apr, 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 Iwata for you.
Your best months: April – May, October
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: March – May, October – November
October is the peak of the typhoon season Hurricane season
Where to go in OctoberSea temperature in October
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 20°
- Midday, 13:00: about 24°
- Afternoon, 16:00: about 23°
- Evening, 20:00: about 20°
- Night, 23:00: about 19°
05:5317:15
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 05:37–06:27 · evening 16:41–17:31
- Blue hour
- Morning 05:28–05:37 · evening 17:31–17:41
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 Iwata compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 26° at the start of the month to 21° at the end. The sea cools from 25° to 23°. The days get 1.0 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 26° | 21° |
| Night-time low | 19° | 14° |
| Sea | 25° | 23° |
| Daylight | 11.9 h | 10.9 h |
What is the weather like in Iwata in October?
In October, Iwata is warm: daytime highs average 24 °C, and nights cool down to about 17 °C. The sea averages 23.8 °C – pleasant for swimming. Expect around 5.1 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 208 mm in total. All in all, October is a good month for a holiday in Iwata.
More details for October
- Daylight
- 11 h 22 min05:53 – 17:15
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 7 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9offset from UTC
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %35 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Rain jacket or umbrella
Compare two months in Iwata
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
November has the better holiday weather in Iwata: score 77 against 69. In November, days are 5 °C cooler than in October. The sea is 3 °C cooler in November. November has 3 fewer rainy days. The sun shines an hour longer a day in November.
| Month | October | November |
|---|---|---|
| Holiday weather score | 69 | 77better |
| Daytime high | 24° | 19° |
| Night-time low | 17° | 11° |
| Sea | 23.8° | 21.3° |
| Sunshine | 5.1 h | 5.7 hbetter |
| Rainy days | 13 | 10better |
| Rainfall | 208 mm | 125 mmbetter |
| Muggy days | 7 | 0better |
Based on the climate averages 1996–2025.
Iwata month by month
The typical weather for every month at a glance.
51January11° · Sea 17° · 6.1 h
In January, Iwata is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sea averages 16.6 °C – swimming is only for the hardy. Expect around 6.1 hours of sunshine a day. Rain falls on about 6 days, adding up to 67 mm. All in all, January is a so-so month for a holiday in Iwata.
Iwata in January54February12° · Sea 16° · 6.2 h
In February, Iwata is cool: daytime highs average 12 °C, and nights cool down to about 4 °C. The sea averages 16.0 °C – swimming is only for the hardy. Expect around 6.2 hours of sunshine a day. Rain falls on about 7 days, adding up to 91 mm. All in all, February is a so-so month for a holiday in Iwata.
Iwata in February64March15° · Sea 16° · 6.4 h
In March, Iwata is cool: daytime highs average 15 °C, and nights cool down to about 7 °C. The sea averages 16.1 °C – swimming is only for the hardy. Expect around 6.4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 153 mm in total. All in all, March is a good month for a holiday in Iwata.
Iwata in March76April20° · Sea 18° · 6.5 h
In April, Iwata is mild: daytime highs average 20 °C, and nights cool down to about 11 °C. The sea averages 17.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 6.5 hours a day. Rain is frequent, with about 12 rainy days and 167 mm in total. All in all, April is a good month for a holiday in Iwata.
Iwata in April73May24° · Sea 20° · 6.4 h
In May, Iwata is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sea averages 19.5 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.4 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 196 mm in total. All in all, May is a good month for a holiday in Iwata.
Iwata in May61June27° · Sea 22° · 4.8 h
In June, Iwata is warm: daytime highs average 27 °C, and even at night it stays warm at around 20 °C. The sea averages 22.1 °C – refreshing for a swim. Expect around 4.8 hours of sunshine a day. It rains often – on about 16 days, adding up to 257 mm. The air is often humid and muggy. All in all, June is a good month for a holiday in Iwata.
Iwata in June39July31° · Sea 25° · 5.5 h
In July, Iwata is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 25.0 °C – pleasant for swimming. Expect around 5.5 hours of sunshine a day. It rains often – on about 17 days, adding up to 275 mm. On about 19 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 Iwata.
Iwata in July34August32° · Sea 27° · 6.6 h
In August, Iwata is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 27.0 °C – lovely and warm for swimming. The sun shines for around 6.6 hours a day. It rains often – on about 17 days, adding up to 177 mm. On about 25 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 Iwata.
Iwata in August52September29° · Sea 26° · 5.3 h
In September, Iwata 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 5.3 hours of sunshine a day. It rains often – on about 16 days, adding up to 231 mm. On about 9 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 Iwata.
Iwata in September69October24° · Sea 24° · 5.1 h
In October, Iwata is warm: daytime highs average 24 °C, and nights cool down to about 17 °C. The sea averages 23.8 °C – pleasant for swimming. Expect around 5.1 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 208 mm in total. All in all, October is a good month for a holiday in Iwata.
Iwata in October77November19° · Sea 21° · 5.7 h
In November, Iwata is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 21.3 °C – refreshing for a swim. Expect around 5.7 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 125 mm in total. All in all, November is a good month for a holiday in Iwata.
Iwata in November61December13° · Sea 19° · 6.1 h
In December, Iwata is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. The sea averages 18.6 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.1 hours of sunshine a day. Rain falls on about 6 days, adding up to 71 mm. All in all, December is a good month for a holiday in Iwata.
Iwata 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 Iwata
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 17°. Ideal for sleeping, often with the window open. Muggy on about 7 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 March, so the room should be heated. It is muggy (dew point 18 °C or more) on about 115 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 | 51 | 11° | 4° | 16.6° | 6.1 h | 6 | 67 |
| FebruaryFeb | 54 | 12° | 4° | 16.0° | 6.2 h | 7 | 91 |
| MarchMar | 64 | 15° | 7° | 16.1° | 6.4 h | 11 | 153 |
| AprilApr | 76 | 20° | 11° | 17.5° | 6.5 h | 12 | 167 |
| MayMay | 73 | 24° | 16° | 19.5° | 6.4 h | 13 | 196 |
| JuneJun | 61 | 27° | 20° | 22.1° | 4.8 h | 16 | 257 |
| JulyJul | 39 | 31° | 24° | 25.0° | 5.5 h | 17 | 275 |
| AugustAug | 34 | 32° | 25° | 27.0° | 6.6 h | 17 | 177 |
| SeptemberSep | 52 | 29° | 22° | 26.1° | 5.3 h | 16 | 231 |
| OctoberOct | 69 | 24° | 17° | 23.8° | 5.1 h | 13 | 208 |
| NovemberNov | 77 | 19° | 11° | 21.3° | 5.7 h | 10 | 125 |
| DecemberDec | 61 | 13° | 6° | 18.6° | 6.1 h | 6 | 71 |
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
34.70° N, 137.85° E · 5 m · Asia/Tokyo
Sea temperature
Sea temperature in Iwata
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 22.3 – 25.3 °C
Swimming season: Jun – Nov
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Iwata ranges from 16.0 °C in February to 27.0 °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 25.9 and 27.9 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 16.6° | 14.9° | 18.2° | cold |
| FebruaryFeb | 16.0° | 14.4° | 17.7° | cold |
| MarchMar | 16.1° | 14.8° | 17.5° | cold |
| AprilApr | 17.5° | 16.2° | 18.9° | fresh |
| MayMay | 19.5° | 18.3° | 20.3° | fresh |
| JuneJun | 22.1° | 21.0° | 23.2° | refreshing |
| JulyJul | 25.0° | 23.7° | 26.1° | pleasant |
| AugustAug | 27.0° | 25.9° | 27.9° | warm |
| SeptemberSep | 26.1° | 24.8° | 27.5° | warm |
| OctoberOct | 23.8° | 22.3° | 25.3° | pleasant |
| NovemberNov | 21.3° | 20.2° | 22.5° | refreshing |
| DecemberDec | 18.6° | 16.9° | 19.8° | fresh |
Sunshine
Sunshine hours in Iwata
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 5.1 of 11.4 hours of daylight in Iwata, 45 % 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 Iwata: 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, Iwata has about 13 rainy days with 208 mm of rain in total.
UV index
UV index in Iwata
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 Iwata
How breezy and how cloudy Iwata 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 Iwata typically peaks at 17 km/h during the day: Beaufort 3, gentle 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: Dec – Apr.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 56 % of the sky over Iwata: variable cloud, with about 5.1 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 Iwata
How often the day gets hot in Iwata (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, Iwata has about 0 hot days, 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 Iwata
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Iwata 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.
Iwata has its best school-holiday weather during the Easter holidays (score 72) and its weakest during the summer holidays (score 36).
- 72
Easter holidays
Mar – Apr
GoodBest holidays
- 19 °C by day
- Sea 17 °C
- 6.5 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 71
May half-term
May – Jun
Good
- 24 °C by day
- Sea 20 °C
- 6.1 h of sun a day
- 13 rainy days a month
- 36
Summer holidays
Jul – Aug
Poor
- 31 °C by day
- Sea 26 °C
- 6.2 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain, Storm season
- 69
October half-term
Oct
Good
- 24 °C by day
- Sea 24 °C
- 5.1 h of sun a day
- 13 rainy days a month
Keep in mind: Storm season
- 56
Christmas holidays
Dec – Jan
Fair
- 12 °C by day
- Sea 18 °C
- 6.1 h of sun a day
- 6 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h 5 min
- Distance
- 9,610 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
Iwata 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
Iwata compared
Put Iwata side by side with another destination.
Iwata vs Hamamatsu
In October the holiday weather in Iwata and Hamamatsu is about equally good (score 69 vs 69). During the day it is about as warm in Hamamatsu as in Iwata. The sea is about equally warm.
| in October | Iwata | Hamamatsu |
|---|---|---|
| Holiday weather score | 69 | 69 |
| Daytime high | 24° | 24° |
| Sea | 24° | 24° |
| Sunshine | 5 h | 5 h |
| Rainy days | 13 | 13 |
| Best time | Mar – May, Oct – Nov | Mar – May, Oct – Nov |
Through the year
Best places in the country
Japan in October: the best places
In October, Iwata ranks 11 among the 31 nearest destinations in this country.
- Okazaki23°75
- 2Toyota24°75
- 3Nagoya24°75
- 4Nara23°75
- 5Yokkaichi23°23°74
- 6Suzuka23°23°74
- 7Tsu23°23°74
- 8Gifu23°73
- 11IwataThis page24°24°69
Places nearby
Near Iwata
Other destinations close by.
Places with a similar climate
Places with a climate like Iwata
Destinations whose weather through the year is closest to Iwata's – good alternatives.
Frequently asked questions about Iwata
When is the best time to visit Iwata?
The best time to visit Iwata is from March 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 Iwata?
The sea temperature in Iwata ranges from 16.0 °C in February to 27.0 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to November.
Can you swim in Iwata in October?
Yes. In October the sea averages 23.8 °C – pleasant for swimming.
What is the warmest month in Iwata?
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 Iwata?
Rain is frequent from June to September; the wettest month is July with 275 mm. The driest month is January with 67 mm.
How many hours of sunshine does Iwata get?
Iwata gets around 2,150 hours of sunshine a year. The sunniest month is August with 6.6 hours a day; in June there are 4.8 hours a day.
What time zone is Iwata in?
Iwata is on UTC+9 all year.
How long is the flight from London to Iwata?
A nonstop flight from London to Iwata takes about 12 h 5 min, for a straight-line distance of about 9,610 km. Most routes need a change of planes, which adds time.
When is typhoon season in Iwata?
Iwata 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 Iwata?
Iwata has its best school-holiday weather during the Easter holidays (score 72) and its weakest during the summer holidays (score 36). Holiday ratings (0–100): Easter holidays 72, May half-term 71, summer holidays 36, October half-term 69, Christmas holidays 56.