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Hourly Forecast
Daylight Hours
05:29
Sunrise
17:28
Sunset
Moon
Waxing Gibbous
14:43
Moonrise
00:26
Moonset
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View stargazing scoreWeather in Iwaki today, September 21, 2026
Iwaki 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. Early hours look the most unsettled, with rain probability near 100% by 02:00. The thickest cloud arrives around 02:00, reaching about 100%.
The day peaks near 23°C and cools toward 21°C. Expect humidity between 93% and 98%, most humid near 18:00. Expect gentle winds, highest near 23:00 at 12.4 km/h.
Expect the wet theme to continue later, as rain odds reach 100% near 12:00. Cloud amounts hold near 100% around 12:00. Horizontal visibility sits around 7.2 km, briefly nearer 0.9 km. Sunrise is at 05:29 and sunset at 17:28, giving 11 hours 58 minutes of sunlight today.
Taken together, Iwaki looks wet enough on September 21, 2026 that flexible outdoor plans work best, with temperatures peaking near 23°C.
Frequently asked questions about weather in Iwaki
How warm does it get in Iwaki?
The warmest month in Iwaki is August, with average high temperatures of 26°C. The average temperature during this period is around 25°C.
How cold does it get in Iwaki?
The coldest month in Iwaki is February, with average low temperatures of 4°C. The average temperature during this period is around 6°C.
What is the wettest time of year in Iwaki?
The wettest month in Iwaki is October, with an average of 212mm of precipitation.
What is the driest time of year in Iwaki?
The driest month in Iwaki is February, with an average of 60mm of precipitation.
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