Tomorrow's Weather Forecast - Osaka

Tomorrow's weather in Osaka. high 30°C (86°F), low 22°C (72°F). Partly Cloudy.

Tomorrow’s Outlook

Tomorrow will be 4°C warmer than today. A warm, sunny day is expected, with rain chances staying low throughout. Humidity stays high near 74%, so it will feel muggier and stickier than the temperature alone suggests. Winds stay light and calm, rarely topping 5 km/h. Sunrise is at 5:38 AM and sunset at 6:09 PM, for about 12h 31m of daylight.

Tomorrow
30°/ 22°
Today26° / 21°

Tomorrow’s Hourly Weather Outlook

Morning6 AM – Noon25°
Rain probability
0%
Wind speed
3 km/h
AfternoonNoon – 6 PM29°
Rain probability
8%
Wind speed
3 km/h
Evening6 PM – Midn27°
Rain probability
10%
Wind speed
5 km/h
NightMidn – 6 AM23°
Rain probability
0%
Wind speed
3 km/h

24-Hour Rain & Temperature Forecast

Tomorrow12 Sep
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Temperature · peaks at +30°C

Planning Advice for Tomorrow

Clothing
Light layers work well; a jacket for the evening.
Outdoor
Good conditions for outdoor activities.
Travel
Standard travel conditions expected.

Sunrise & Sunset

Sunrise
Dawn 5:08 AM
Total Daylight
Full day forecastSolar noon 11:54 AM
Sunset
Dusk 6:39 PM
vs today-2 min daylight
Sunrise shift1 min later
Sunset shift2 min earlier

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Osaka is forecast to reach a high of 30°C tomorrow, with an overnight low around 22°C. That's 3° above the long-term average high of 27°C for this time of year. It continues a recent pattern — 12 of the last 19 days with published data have run warmer than normal. Expect little chance of rain (10% probability) and light winds averaging 5 km/h. Air quality is currently Moderate (AQI 60), driven mainly by PM2.5 at 14 μg/m³.

Today vs Normal

26°C-1° below normal

The long-term average high for today is 27°C.

12 of the last 19 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

2026-08-19: 30°C30°2026-08-20: 31°C31°2026-08-21: 31°C31°2026-08-22: 31°C31°2026-08-23: 32°C32°2026-08-24: 33°C33°2026-08-25: 32°C32°2026-08-26: 31°C31°2026-08-27: 30°C30°2026-08-28: 28°C28°2026-08-29: 30°C30°2026-08-30: 31°C31°

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.