Tomorrow's Weather Forecast - Brno

Tomorrow's weather in Brno. high 21°C (70°F), low 8°C (46°F). Foggy.

Tomorrow’s Outlook

Tomorrow will be 7°C warmer than today. Mild conditions with dry weather expected all day. Humidity holds around 83%, giving the air a damp, heavy feel even without much heat behind it. Winds stay light and calm, rarely topping 7 km/h. Sunrise is at 6:25 AM and sunset at 7:13 PM, for about 12h 48m of daylight.

Tomorrow
21°/ 8°
Today14° / 11°

Tomorrow’s Hourly Weather Outlook

Morning6 AM – Noon10°
Rain probability
0%
Wind speed
5 km/h
AfternoonNoon – 6 PM19°
Rain probability
5%
Wind speed
7 km/h
Evening6 PM – Midn18°
Rain probability
0%
Wind speed
4 km/h
NightMidn – 6 AM10°
Rain probability
0%
Wind speed
6 km/h

24-Hour Rain & Temperature Forecast

Tomorrow12 Sep
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Temperature · peaks at +21°C

Planning Advice for Tomorrow

Clothing
Warm jacket and comfortable layers recommended.
Outdoor
Good conditions for outdoor activities.
Travel
Standard travel conditions expected.

Sunrise & Sunset

Sunrise
Dawn 5:55 AM
Total Daylight
Full day forecastSolar noon 12:49 PM
Sunset
Dusk 7:43 PM
vs today-3 min daylight
Sunrise shift2 min later
Sunset shift2 min earlier

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Brno is forecast to reach a high of 21°C tomorrow, with an overnight low around 8°C. That's 1° below the long-term average high of 22°C for this time of year. Expect little chance of rain (5% probability) and light winds averaging 7 km/h. Air quality is currently good (AQI 27), with no notable outdoor health concerns.

Today vs Normal

14°C-8° below normal

The long-term average high for today is 22°C.

14 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: 28°C28°2026-08-20: 32°C32°2026-08-21: 27°C27°2026-08-22: 25°C25°2026-08-23: 25°C25°2026-08-24: 26°C26°2026-08-25: 25°C25°2026-08-26: 27°C27°2026-08-27: 29°C29°2026-08-28: 31°C31°2026-08-29: 28°C28°2026-08-30: 30°C30°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.