- Clothing
- Waterproof jacket and umbrella strongly recommended.
Tomorrow's Weather Forecast - Sapporo
Tomorrow's weather in Sapporo. high 24°C (75°F), low 11°C (52°F). Drizzle.
Tomorrow’s Outlook
Tomorrow brings a similar temperature to today. Expect heavy rain in the morning and afternoon, with rain chances climbing as high as 99%. That risk lines up with humidity averaging 83% through the day the more moisture in the air, the more readily clouds build into showers. Humidity stays high near 83%, so it will feel muggier and stickier than the temperature alone suggests. Winds stay light and calm, rarely topping 10 km/h. Sunrise is at 5:10 AM and sunset at 5:50 PM, for about 12h 41m of daylight.
- Tomorrow
- 24°/ 11°
- Today25° / 12°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon18°
- Rain probability
- 55%
- Wind speed
- 6 km/h
AfternoonNoon – 6 PM23°
- Rain probability
- 99%
- Wind speed
- 10 km/h
Evening6 PM – Midn18°
- Rain probability
- 49%
- Wind speed
- 4 km/h
NightMidn – 6 AM12°
- Rain probability
- 0%
- Wind speed
- 7 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Not ideal for outdoor plans or car washes — heavy rain expected.
- Travel
- Expect traffic slowdowns from wet roads. Allow extra time.
Sunrise & Sunset
Sunrise
Dawn 4:40 AMTotal Daylight
Full day forecastSolar noon 11:30 AM
Sunset
Dusk 6:20 PMvs today-2 min daylight
Sunrise shift1 min later
Sunset shift2 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Sapporo is forecast to reach a high of 24°C tomorrow, with an overnight low around 11°C. That's 3° above the long-term average high of 21°C for this time of year. Expect a high chance of rain (99% probability) and a gentle breeze averaging 10 km/h. Air quality is currently Moderate (AQI 57), driven mainly by PM2.5 at 14 μg/m³.
Today vs Normal
25°C+4° above normal
The long-term average high for today is 21°C.
14 of the last 28 days with published data ran above normal.
That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air Quality
Moderate
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.