See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
21°
Light Rain and Humid
Feels Like: 20°
Min: 21°
Max: 23°
The next few hours will be rain and humid, with today reaching 23°C and dropping to 21°C. The coming days will be partly cloudy
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:29
Sunrise
17:27
Sunset
Moon
Waxing Gibbous
14:45
Moonrise
00:24
Moonset
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View stargazing scoreWeather in Sōma today, September 21, 2026
Sōma starts September 21, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Morning plans should assume damp conditions, as rain chances climb toward 100% around 04:00. Cloud cover is also at its densest near 02:00 at roughly 100%.
Temperatures climb from an overnight low near 21°C toward a daytime high of about 23°C. Relative humidity sits between 94% and 98%, reaching its peak around 18:00. Expect gentle winds, highest near 21:00 at 8.4 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 100% around 16:00. Cloud also stays substantial, close to 100% near 12:00. Visibility holds near 7.9 km, though it can fall to 0.2 km. Daylight runs from 05:29 to 17:27, lasting 11 hours 58 minutes of sunlight today.
In short, treat September 21, 2026 in Sōma as a damp day: pack covers, watch the wetter hours, and expect a high near 23°C.
Frequently asked questions about weather in Sōma
How warm does it get in Sōma?
The warmest month in Sōma is August, with average high temperatures of 27°C. The average temperature during this period is around 26°C.
How cold does it get in Sōma?
The coldest month in Sōma is February, with average low temperatures of 3°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Sōma?
The wettest month in Sōma is September, with an average of 198mm of precipitation.
What is the driest time of year in Sōma?
The driest month in Sōma is February, with an average of 49mm of precipitation.
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