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Hourly Forecast
Daylight Hours
05:25
Sunrise
17:37
Sunset
Moon
Waxing Crescent
10:30
Moonrise
20:05
Moonset
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Weather in Nagano today, September 16, 2026
Expect unsettled, showery conditions in Nagano on September 16, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans. The morning carries the wetter risk, with rain chances near 98% and the highest odds around 10:00. Cloud is also thick early on, peaking near 100% around 10:00.
The temperature range runs from about 18°C up to 20°C. Expect humidity between 90% and 98%, most humid near 23:00. A lighter breeze peaks around 12:00 near 3.3 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 100% around 13:00. Cloud also stays substantial, close to 100% near 12:00. Horizontal visibility sits around 15.9 km, briefly nearer 12.6 km. Daylight runs from 05:25 to 17:37, lasting 12 hours 11 minutes of sunlight today.
The practical takeaway for Nagano on September 16, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 20°C.
Frequently asked questions about weather in Nagano
How warm does it get in Nagano?
The warmest month in Nagano is August, with average high temperatures of 28°C. The average temperature during this period is around 25°C.
How cold does it get in Nagano?
The coldest month in Nagano is January, with average low temperatures of -1°C. The average temperature during this period is around 2°C.
What is the wettest time of year in Nagano?
The wettest month in Nagano is August, with an average of 210mm of precipitation.
What is the driest time of year in Nagano?
The driest month in Nagano is February, with an average of 48mm of precipitation.
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