Climate averages 1991–2020
Bern weather
in August.
A mild, wet month: one of the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Bern: daytime highs average 21.8°C and nights cool to about 13.1°C. By daytime temperature it is one of the warmest months of the year.
Expect about 101 mm of rain on roughly 13 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 13 min on an average August day.
The nearest other city in this atlas is Luzern (66 km away). In August its highs average 23.0°C, 1.2°C warmer than Bern, with 211 mm of rain.
Among the 8 cities listed in Switzerland, Bern ranks 7th of 8 for the warmest August highs and 1st of 8 for the driest August (rainfall, lowest first). The mean August high of those 8 cities is 22.9°C; Bern is 1.2°C cooler than that mean.
From August to September, average highs fall by 4.0°C to 17.7°C, and monthly rainfall falls from 101 mm to 88 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
Bern climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.8°C-3.3°C | -3.3°C | 80 | 12.8 | 9.09 h |
| February | 4.9°C-3.3°C | -3.3°C | 73 | 11.7 | 10.310 h |
| March | 8.8°C-0.2°C | -0.2°C | 84 | 13.3 | 11.912 h |
| April | 12.5°C2.7°C | 2.7°C | 90 | 13.6 | 13.614 h |
| May | 16.3°C7.0°C | 7.0°C | 117 | 15.4 | 15.015 h |
| June | 19.8°C10.8°C | 10.8°C | 106 | 14.7 | 15.816 h |
| July | 21.8°C12.9°C | 12.9°C | 104 | 13.5 | 15.515 h |
| August, selected | 21.8°C13.1°C | 13.1°C | 101 | 13.3 | 14.214 h |
| September | 17.7°C9.6°C | 9.6°C | 88 | 11.8 | 12.613 h |
| October | 13.9°C5.8°C | 5.8°C | 84 | 11.9 | 10.911 h |
| November | 8.1°C1.0°C | 1.0°C | 90 | 12.6 | 9.49 h |
| December | 4.4°C-2.1°C | -2.1°C | 93 | 13.5 | 8.69 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
- Luzern in AugustSwitzerland · 66 kmHigh 23.0°C · Low 15.2°C · 211 mm rain
- Basel in AugustSwitzerland · 69 kmHigh 24.5°C · Low 14.9°C · 125 mm rain
- Lausanne in AugustSwitzerland · 79 kmHigh 22.8°C · Low 16.8°C · 116 mm rain
- Mulhouse in AugustFrance · 90 kmHigh 24.3°C · Low 15.1°C · 80 mm rain
- Zürich in AugustSwitzerland · 95 kmHigh 23.2°C · Low 15.0°C · 147 mm rain
- Besançon in AugustFrance · 113 kmHigh 24.7°C · Low 15.5°C · 78 mm rain
- Winterthur in AugustSwitzerland · 115 kmHigh 23.1°C · Low 14.6°C · 107 mm rain
- Freiburg in AugustGermany · 120 kmHigh 24.4°C · Low 15.6°C · 81 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 Bern) is explained once on the Bern year overview and on the Sources, method and limits page.