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Hourly Forecast
Daylight Hours
05:46
Sunrise
17:45
Sunset
Moon
Waxing Gibbous
14:57
Moonrise
00:47
Moonset
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View stargazing scoreWeather in Katsuyama today, September 21, 2026
Katsuyama looks damp on September 21, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. The morning carries the wetter risk, with rain chances near 26% and the highest odds around 07:00. Cloud is also thick early on, peaking near 100% around 06:00.
The temperature range runs from about 22°C up to 28°C. Moisture in the air spans 70%-97%, with the highest values around 06:00. Expect gentle winds, highest near 15:00 at 4.1 km/h.
The second half of the day still looks unsettled, with rain probability around 30% by 19:00. Dense cloud near 99% at 12:00 keeps the feel grey. Expect visibility near 8.6 km, with poorer spells close to 0.1 km. Sunrise is at 05:46 and sunset at 17:45, giving 11 hours 58 minutes of sunlight today.
The practical takeaway for Katsuyama on September 21, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 28°C.
Frequently asked questions about weather in Katsuyama
How warm does it get in Katsuyama?
The warmest month in Katsuyama is August, with average high temperatures of 28°C. The average temperature during this period is around 24°C.
How cold does it get in Katsuyama?
The coldest month in Katsuyama is January, with average low temperatures of -4°C. The average temperature during this period is around -1°C.
What is the wettest time of year in Katsuyama?
The wettest month in Katsuyama is July, with an average of 360mm of precipitation.
What is the driest time of year in Katsuyama?
The driest month in Katsuyama is November, with an average of 154mm of precipitation.
