Climate averages 1991–2020
Zagreb weather
in December.
A cold, moderately wet month: the 11th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Zagreb: daytime highs average 5.1°C and nights cool to about -1.2°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 68 mm of rain on roughly 10 days, which makes December a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 45 min on an average December day.
The nearest other city in this atlas is Maribor (86 km away). In December its highs average 4.8°C, about as warm as Zagreb, with 62 mm of rain.
Among the 4 cities listed in Croatia, Zagreb ranks joint 3rd of 4 for the warmest December highs and 2nd of 4 for the driest December (rainfall, lowest first). The mean December high of those 4 cities is 7.2°C; Zagreb is 2.1°C cooler than that mean.
From December to January, average highs fall by 0.5°C to 4.7°C, and monthly rainfall falls from 68 mm to 49 mm.
The annual picture
December in context
Monthly rainfall
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
Zagreb climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.7°C-2.2°C | -2.2°C | 49 | 8.0 | 9.19 h |
| February | 7.2°C-1.6°C | -1.6°C | 56 | 8.3 | 10.310 h |
| March | 12.1°C1.8°C | 1.8°C | 59 | 9.5 | 11.912 h |
| April | 16.9°C6.1°C | 6.1°C | 67 | 10.5 | 13.514 h |
| May | 21.2°C10.8°C | 10.8°C | 87 | 12.7 | 14.915 h |
| June | 25.2°C15.0°C | 15.0°C | 84 | 11.4 | 15.716 h |
| July | 27.5°C17.2°C | 17.2°C | 77 | 10.6 | 15.315 h |
| August | 27.4°C17.3°C | 17.3°C | 81 | 9.4 | 14.114 h |
| September | 21.8°C12.6°C | 12.6°C | 94 | 10.0 | 12.613 h |
| October | 16.6°C8.1°C | 8.1°C | 80 | 9.1 | 11.011 h |
| November | 10.5°C3.6°C | 3.6°C | 80 | 9.6 | 9.510 h |
| December, selected | 5.1°C-1.2°C | -1.2°C | 68 | 9.5 | 8.79 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
- Maribor in DecemberSlovenia · 86 kmHigh 4.8°C · Low -1.9°C · 62 mm rain
- Bihać in DecemberBosnia and Herzegovina · 111 kmHigh 6.3°C · Low -0.2°C · 116 mm rain
- Ljubljana in DecemberSlovenia · 117 kmHigh 4.3°C · Low -1.9°C · 90 mm rain
- Rijeka in DecemberCroatia · 131 kmHigh 7.7°C · Low 2.0°C · 169 mm rain
- Graz in DecemberAustria · 145 kmHigh 3.6°C · Low -4.0°C · 45 mm rain
- Banja Luka in DecemberBosnia and Herzegovina · 150 kmHigh 6.0°C · Low -1.3°C · 82 mm rain
- Klagenfurt am Wörthersee in DecemberAustria · 157 kmHigh 3.6°C · Low -2.8°C · 80 mm rain
- Szombathely in DecemberHungary · 165 kmHigh 3.8°C · Low -2.1°C · 41 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 Zagreb) is explained once on the Zagreb year overview and on the Sources, method and limits page.