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Hourly Forecast
Daylight Hours
05:40
Sunrise
17:39
Sunset
Moon
Waxing Gibbous
14:51
Moonrise
00:40
Moonset
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View stargazing scoreWeather in Shimosuwa today, September 21, 2026
Shimosuwa 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. The morning carries the wetter risk, with rain chances near 66% and the highest odds around 07:00. Cloud is also thick early on, peaking near 100% around 07:00.
Temperatures climb from an overnight low near 18°C toward a daytime high of about 24°C. The air stays humid, with relative humidity between 78% and 96% and the peak around 07:00. Winds stay light, near 4.7 km/h by 12:00, so the day feels still more than breezy.
Afternoon conditions improve on the morning wet spell, as rain chances fall toward 18% from about 66% earlier. Cloud still reaches roughly 100% near 12:00. Expect visibility near 2.9 km, with poorer spells close to 0.1 km. Daylight runs from 05:40 to 17:39, lasting 11 hours 58 minutes of sunlight today.
Taken together, Shimosuwa looks wet enough on September 21, 2026 that flexible outdoor plans work best, with temperatures peaking near 24°C.
Frequently asked questions about weather in Shimosuwa
How warm does it get in Shimosuwa?
The warmest month in Shimosuwa is August, with average high temperatures of 28°C. The average temperature during this period is around 23°C.
How cold does it get in Shimosuwa?
The coldest month in Shimosuwa is January, with average low temperatures of -5°C. The average temperature during this period is around -2°C.
What is the wettest time of year in Shimosuwa?
The wettest month in Shimosuwa is July, with an average of 226mm of precipitation.
What is the driest time of year in Shimosuwa?
The driest month in Shimosuwa is January, with an average of 80mm of precipitation.
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