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24°
Partly Cloudy
Feels Like: 23°
Min: 23°
Max: 27°
The next few hours will be partly cloudy, with today reaching 27°C and dropping to 23°C. The coming days will be mostly cloudy
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:04
Sunrise
18:02
Sunset
Moon
Waxing Gibbous
15:09
Moonrise
01:11
Moonset
Daily Forecast
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
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UV Index
Humidity
Current stargazing conditions?
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View stargazing scoreWeather in Ōshima today, September 21, 2026
Ōshima is set for a fine, sunny day on September 21, 2026, with only limited interruptions to the clear sky. The early hours look particularly favourable for being outside. The opening hours look fair, as cloud stays near 59% around 06:00. Morning errands should face fewer weather interruptions.
The day peaks near 27°C and cools toward 23°C. Expect humidity between 60% and 77%, most humid near 06:00. Winds stay light, near 8.0 km/h by 18:00, so the day feels still more than breezy.
Through the afternoon skies look more workable, with cloud near 50% around 15:00. Later outdoor plans have a clearer window than the morning may have suggested. Expect visibility around 16.1 km. Expect sunrise at 06:04, sunset at 18:02, and 11 hours 58 minutes of sunlight today overall.
In short, September 21, 2026 looks like a fine day in Ōshima for being outside, peaking around 27°C.
Frequently asked questions about weather in Ōshima
How warm does it get in Ōshima?
The warmest month in Ōshima is August, with average high temperatures of 30°C. The average temperature during this period is around 28°C.
How cold does it get in Ōshima?
The coldest month in Ōshima is February, with average low temperatures of 5°C. The average temperature during this period is around 7°C.
What is the wettest time of year in Ōshima?
The wettest month in Ōshima is July, with an average of 254mm of precipitation.
What is the driest time of year in Ōshima?
The driest month in Ōshima is January, with an average of 62mm of precipitation.
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