worldweather21°Ccooler than usual
usually 19°C–27°C
cooler than 70% of similar days
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
Weather in Brno - 14-day forecast
Detailed weather forecast for Brno, Czech Republic: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Brno
today🌧️
21°💧 0.9 mm
Sun☁️
22°💧 1.2 mm
Mon☁️
22°💧 3.7 mm
Tue🌧️
25°💧 0.5 mm
Wed🌧️
24°💧 15.2 mm
Thu🌧️
19°💧 2.9 mm
Fri☁️
20°💧 6.6 mm
Sat🌧️
20°💧 0.5 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Thursday 10 Sept in Brno, the forecast high is 19°C. Typical daytime temperatures at this time of year range from 19°C to 26°C, so it will be cooler than usual. It is cooler than 77% of similar days.
22°Cnear normal
usually 19°C–27°C
night: warmer than usual
rain: more rain than usual
wind: typical
22°Cnear normal
usually 19°C–27°C
night: exceptionally warm
rain: more rain than usual
wind: exceptionally light
25°Cnear normal
usually 19°C–26°C
night: exceptionally warm
rain: typical rainfall
wind: exceptionally light
24°Cnear normal
usually 19°C–26°C
night: exceptionally warm
rain: exceptionally wet
wind: typical
19°Ccooler than usual
usually 19°C–26°C
cooler than 77% of similar days
night: warmer than usual
rain: more rain than usual
wind: exceptionally light
20°Cnear normal
usually 19°C–26°C
night: exceptionally warm
rain: more rain than usual
wind: lighter than usual
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 23°C by day. The coolest year was 2007 (16°C) and the warmest was 2023 (29°C). The current forecast averages 22°C - lower than in 67% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
Weather warnings - Brno
No active weather warnings for Brno (region: Jihomoravský). The national weather service is not forecasting dangerous conditions.
14-day forecast - Brno
Brno 30 & 45-day weather - long-range outlook
Next 16 days · forecast
20°
around 15° at night · days with rain: 9
Weeks 3-4 · avg for September
20°
around 11° at night · rain chance 49%
Weeks 5-7 · avg for October
14°
around 6° at night · rain chance 50%
The 30 & 45-day outlook for Brno: the next 16 days are a numerical forecast updated daily - on average 20° by day and 15° at night. Further out we rely on multi-year climate averages: around 20° in September, and about 14° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Brno
Saturday5 September 2026
🌧️21°light rain
Sunday6 September 2026
☁️22°broken clouds
Monday7 September 2026
☁️22°overcast clouds
Tuesday8 September 2026
🌧️25°light rain
Wednesday9 September 2026
🌧️24°moderate rain
Thursday10 September 2026
🌧️19°light rain
Friday11 September 2026
☁️20°overcast clouds
Saturday12 September 2026
🌧️20°light rain
Sunday13 September 2026
🌤️18°scattered clouds
Monday14 September 2026
☀️17°clear sky
Tuesday15 September 2026
🌤️19°a few clouds
Wednesday16 September 2026
🌧️21°light rain
Thursday17 September 2026
🌤️21°a few clouds
Friday18 September 2026
🌤️24°scattered clouds
Saturday19 September 2026
🌤️14°a few clouds
Sunday20 September 2026
☀️16°clear sky
UV index in Brno - is it safe to sunbathe?
Today the UV index in Brno is 5 (moderate) - unprotected fair skin can burn in about 40 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Pollen in Brno - info for allergy sufferers
Today ragweed pollen is highest in Brno - about 27 grains/m³, moderate level. Most allergy sufferers should not feel strong symptoms. Pollen levels are a CAMS model forecast and are indicative.
Air quality and smog in Brno
Air quality in Brno is currently very good. Fine particulate PM2.5: 4.7 µg/m³, PM10: 6.6 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Brno | 4.7 | 6.6 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 03:00).
Brno weather through the year
Warmest, driest months on average: April, May, June, July.
Upcoming public holidays in Czech Republic: St. Wenceslas Day — 28 September · Independent Czechoslovak State Day — 28 October · Struggle for Freedom and Democracy Day — 17 November.
Nearby and related places
FAQ - Brno weather
What is the weather like in Brno today?
Today it is about 21° during the day and 19° at night, light rain.
How far ahead can I check the forecast for Brno?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.