Climate averages 1991–2020
Ostrava weather
in December.
A cold, moderately wet 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 Ostrava: daytime highs average 2.5°C and nights cool to about -2.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 49 mm of rain on roughly 11 days, which makes December a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 12 min on an average December day.
The nearest other city in this atlas is Havířov (13 km away). In December its highs average 2.1°C, about as warm as Ostrava, with 55 mm of rain.
Among the 12 cities listed in Czechia, Ostrava ranks joint 9th of 12 for the warmest December highs and joint 6th of 12 for the driest December (rainfall, lowest first). The mean December high of those 12 cities is 2.9°C; Ostrava is 0.4°C cooler than that mean.
From December to January, average highs fall by 1.2°C to 1.4°C, and monthly precipitation falls from 49 mm to 47 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
Ostrava climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.4°C-4.0°C | -4.0°C | 47 | 11.1 | 8.69 h |
| February | 3.3°C-3.5°C | -3.5°C | 46 | 11.0 | 10.110 h |
| March | 8.0°C-0.5°C | -0.5°C | 55 | 12.1 | 11.812 h |
| April | 14.0°C3.8°C | 3.8°C | 57 | 10.8 | 13.714 h |
| May | 18.4°C8.8°C | 8.8°C | 90 | 14.0 | 15.415 h |
| June | 21.7°C12.6°C | 12.6°C | 100 | 13.5 | 16.316 h |
| July | 23.7°C14.7°C | 14.7°C | 114 | 14.2 | 15.916 h |
| August | 23.9°C14.5°C | 14.5°C | 85 | 11.7 | 14.514 h |
| September | 18.7°C10.4°C | 10.4°C | 82 | 11.0 | 12.713 h |
| October | 13.3°C6.3°C | 6.3°C | 59 | 10.3 | 10.811 h |
| November | 7.7°C2.3°C | 2.3°C | 53 | 10.5 | 9.19 h |
| December, selected | 2.5°C-2.3°C | -2.3°C | 49 | 11.1 | 8.28 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
- Havířov in DecemberCzechia · 13 kmHigh 2.1°C · Low -2.7°C · 55 mm rain
- Jastrzębie Zdrój in DecemberPoland · 25 kmHigh 2.6°C · Low -2.3°C · 46 mm rain
- Rybnik in DecemberPoland · 35 kmHigh 2.7°C · Low -2.2°C · 46 mm rain
- Bielsko-Biala in DecemberPoland · 55 kmHigh 2.4°C · Low -2.9°C · 64 mm rain
- Gliwice in DecemberPoland · 59 kmHigh 2.6°C · Low -2.2°C · 45 mm rain
- Tychy in DecemberPoland · 59 kmHigh 2.3°C · Low -2.7°C · 45 mm rain
- Zabrze in DecemberPoland · 65 kmHigh 2.3°C · Low -2.5°C · 45 mm rain
- Katowice in DecemberPoland · 71 kmHigh 2.2°C · Low -2.6°C · 45 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 Ostrava) is explained once on the Ostrava year overview and on the Sources, method and limits page.