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Zagreb Weather by Month
Average temperatures, rainfall and humidity for Zagreb, Croatia, month by month, built from OpenWeather's historical records. Use it to see what a typical Zagreb month looks like before you travel — then check the live Zagreb forecast for the days ahead.
Warmest month
July
29°C average high
Coolest month
January
-2°C average low
Wettest month
September
77 mm of rain
Driest month
January
30 mm of rain
Average temperature and rainfall in Zagreb by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 6°C | -2°C | -17°C / 28°C | 30 mm | 83% | 8 km/h |
| February | 9°C | 0°C | -17°C / 22°C | 32 mm | 76% | 8 km/h |
| March | 13°C | 3°C | -17°C / 25°C | 42 mm | 66% | 10 km/h |
| April | 18°C | 6°C | -7°C / 31°C | 45 mm | 64% | 11 km/h |
| May | 22°C | 11°C | 2°C / 33°C | 71 mm | 70% | 9 km/h |
| June | 27°C | 15°C | 6°C / 39°C | 45 mm | 67% | 8 km/h |
| July | 29°C | 17°C | 10°C / 40°C | 56 mm | 66% | 7 km/h |
| August | 29°C | 17°C | 9°C / 40°C | 54 mm | 68% | 7 km/h |
| September | 23°C | 13°C | 1°C / 34°C | 77 mm | 74% | 7 km/h |
| October | 18°C | 8°C | -2°C / 29°C | 62 mm | 80% | 7 km/h |
| November | 11°C | 3°C | -8°C / 24°C | 65 mm | 84% | 7 km/h |
| December | 6°C | 0°C | -15°C / 21°C | 34 mm | 85% | 7 km/h |
Best time to visit Zagreb
The most comfortable time to visit Zagreb is generally May to June and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around September, totalling about 612 mm a year.
Travellers who prefer heat should aim for July, when highs average 29°C. September is the month to avoid if rain would spoil your plans — it averages 77 mm, roughly 3× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Zagreb forecast for what is happening now.