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Hourly Forecast
Daylight Hours
05:27
Sunrise
17:37
Sunset
Moon
Waxing Crescent
10:23
Moonrise
20:15
Moonset
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Weather in Katsuura tomorrow, September 17, 2026
Katsuura looks damp on September 17, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Wetter spells lean into the morning, when rain odds reach about 100% near 00:00. Skies look heaviest around 00:00, with cover close to 99%.
The day peaks near 21°C and cools toward 19°C. Expect humidity between 79% and 99%, most humid near 00:00. Expect gentle winds, highest near 12:00 at 6.3 km/h.
The second half of the day still looks unsettled, with rain probability around 36% by 12:00. Dense cloud near 85% at 12:00 keeps the feel grey. Visibility stays generally good near 15.6 km on average, though it can drop toward 10.3 km in thicker cloud or showers. Expect sunrise at 05:28, sunset at 17:36, and 12 hours 7 minutes of sunlight today overall.
Taken together, Katsuura looks wet enough on September 17, 2026 that flexible outdoor plans work best, with temperatures peaking near 21°C.
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