Climate averages 1991–2020
Zagreb weather
in August.
A warm, moderately wet month: the 2nd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Zagreb: daytime highs average 27.4°C and nights cool to about 17.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 81 mm of rain on roughly 9 days, which makes August a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 08 min on an average August day.
The nearest other city in this atlas is Maribor (86 km away). In August its highs average 25.6°C, 1.8°C cooler than Zagreb, with 108 mm of rain.
Among the 4 cities listed in Croatia, Zagreb ranks 4th of 4 for the warmest August highs and 3rd of 4 for the driest August (rainfall, lowest first). The mean August high of those 4 cities is 28.1°C; Zagreb is 0.7°C cooler than that mean.
From August to September, average highs fall by 5.6°C to 21.8°C, and monthly rainfall rises from 81 mm to 94 mm.
The annual picture
August 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, selected | 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 | 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
August in nearby cities
- Maribor in AugustSlovenia · 86 kmHigh 25.6°C · Low 16.1°C · 108 mm rain
- Bihać in AugustBosnia and Herzegovina · 111 kmHigh 27.2°C · Low 16.8°C · 85 mm rain
- Ljubljana in AugustSlovenia · 117 kmHigh 25.2°C · Low 15.9°C · 112 mm rain
- Rijeka in AugustCroatia · 131 kmHigh 27.9°C · Low 19.0°C · 90 mm rain
- Graz in AugustAustria · 145 kmHigh 24.0°C · Low 13.8°C · 89 mm rain
- Banja Luka in AugustBosnia and Herzegovina · 150 kmHigh 27.5°C · Low 16.3°C · 72 mm rain
- Klagenfurt am Wörthersee in AugustAustria · 157 kmHigh 24.1°C · Low 15.3°C · 152 mm rain
- Szombathely in AugustHungary · 165 kmHigh 25.7°C · Low 16.2°C · 78 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.