Climate averages 1991–2020
Brno weather
in December.
A cold, fairly dry month: the 11th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Brno: daytime highs average 2.6°C and nights cool to about -2.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 36 mm of rain on roughly 9 days, which makes December a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 17 min on an average December day.
The nearest other city in this atlas is Olomouc (64 km away). In December its highs average 2.2°C, about as warm as Brno, with 39 mm of rain.
Among the 12 cities listed in Czechia, Brno ranks joint 7th of 12 for the warmest December highs and 1st of 12 for the driest December (rainfall, lowest first). The mean December high of those 12 cities is 2.9°C; Brno is 0.3°C cooler than that mean.
From December to January, average highs fall by 0.7°C to 1.9°C, and monthly precipitation falls from 36 mm to 33 mm.
The annual picture
December in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Brno climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.9°C-3.7°C | -3.7°C | 33 | 8.8 | 8.79 h |
| February | 4.3°C-2.9°C | -2.9°C | 28 | 7.3 | 10.110 h |
| March | 8.9°C0.2°C | 0.2°C | 40 | 8.8 | 11.912 h |
| April | 14.8°C4.7°C | 4.7°C | 40 | 9.1 | 13.714 h |
| May | 19.2°C9.7°C | 9.7°C | 65 | 12.4 | 15.315 h |
| June | 22.8°C13.4°C | 13.4°C | 75 | 12.3 | 16.216 h |
| July | 25.0°C15.5°C | 15.5°C | 84 | 13.0 | 15.816 h |
| August | 24.9°C15.3°C | 15.3°C | 69 | 10.4 | 14.414 h |
| September | 19.5°C11.0°C | 11.0°C | 64 | 9.5 | 12.713 h |
| October | 13.6°C6.4°C | 6.4°C | 44 | 8.9 | 10.811 h |
| November | 7.5°C2.3°C | 2.3°C | 41 | 9.0 | 9.29 h |
| December, selected | 2.6°C-2.3°C | -2.3°C | 36 | 9.0 | 8.38 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Olomouc in DecemberCzechia · 64 kmHigh 2.2°C · Low -2.7°C · 39 mm rain
- Zlín in DecemberCzechia · 77 kmHigh 2.6°C · Low -2.1°C · 49 mm rain
- Vienna in DecemberAustria · 111 kmHigh 3.8°C · Low -1.7°C · 38 mm rain
- Pardubice in DecemberCzechia · 111 kmHigh 3.1°C · Low -1.6°C · 49 mm rain
- Bratislava in DecemberSlovakia · 122 kmHigh 3.6°C · Low -1.7°C · 40 mm rain
- Hradec Králové in DecemberCzechia · 126 kmHigh 3.0°C · Low -1.7°C · 50 mm rain
- Ostrava in DecemberCzechia · 140 kmHigh 2.5°C · Low -2.3°C · 49 mm rain
- Nitra in DecemberSlovakia · 146 kmHigh 3.5°C · Low -1.8°C · 43 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Brno) is explained once on the Brno year overview and on the Sources, method and limits page.