Climate averages 1991–2020
Ljubljana weather
in August.
A warm, 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 Ljubljana: daytime highs average 25.2°C and nights cool to about 15.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 112 mm of rain on roughly 11 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 09 min on an average August day.
The nearest other city in this atlas is Klagenfurt am Wörthersee (66 km away). In August its highs average 24.1°C, 1.1°C cooler than Ljubljana, with 152 mm of rain.
Among the 2 cities listed in Slovenia, Ljubljana ranks 2nd of 2 for the warmest August highs and 2nd of 2 for the driest August (rainfall, lowest first). The mean August high of those 2 cities is 25.4°C; Ljubljana is 0.2°C cooler than that mean.
From August to September, average highs fall by 5.3°C to 19.8°C, and monthly rainfall rises from 112 mm to 125 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
Ljubljana climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.7°C-2.7°C | -2.7°C | 59 | 8.0 | 9.19 h |
| February | 5.7°C-2.3°C | -2.3°C | 75 | 8.5 | 10.310 h |
| March | 10.3°C1.3°C | 1.3°C | 76 | 10.1 | 11.912 h |
| April | 15.1°C5.3°C | 5.3°C | 90 | 12.0 | 13.514 h |
| May | 19.3°C9.7°C | 9.7°C | 103 | 13.4 | 14.915 h |
| June | 23.2°C13.6°C | 13.6°C | 105 | 13.4 | 15.716 h |
| July | 25.3°C15.8°C | 15.8°C | 95 | 11.3 | 15.415 h |
| August, selected | 25.2°C15.9°C | 15.9°C | 112 | 11.1 | 14.214 h |
| September | 19.8°C11.5°C | 11.5°C | 125 | 11.1 | 12.613 h |
| October | 14.6°C7.3°C | 7.3°C | 117 | 10.2 | 11.011 h |
| November | 9.1°C3.1°C | 3.1°C | 121 | 11.2 | 9.510 h |
| December | 4.3°C-1.9°C | -1.9°C | 90 | 9.2 | 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
- Klagenfurt am Wörthersee in AugustAustria · 66 kmHigh 24.1°C · Low 15.3°C · 152 mm rain
- Trieste in AugustItaly · 72 kmHigh 27.7°C · Low 18.9°C · 111 mm rain
- Rijeka in AugustCroatia · 81 kmHigh 27.9°C · Low 19.0°C · 90 mm rain
- Udine in AugustItaly · 98 kmHigh 26.5°C · Low 16.5°C · 96 mm rain
- Maribor in AugustSlovenia · 104 kmHigh 25.6°C · Low 16.1°C · 108 mm rain
- Zagreb in AugustCroatia · 117 kmHigh 27.4°C · Low 17.3°C · 81 mm rain
- Graz in AugustAustria · 134 kmHigh 24.0°C · Low 13.8°C · 89 mm rain
- Bihać in AugustBosnia and Herzegovina · 174 kmHigh 27.2°C · Low 16.8°C · 85 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 Ljubljana) is explained once on the Ljubljana year overview and on the Sources, method and limits page.