Climate averages 1991–2020
Grenoble weather
in August.
A warm, wet month: the 2nd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Grenoble: daytime highs average 26.3°C and nights cool to about 16.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 107 mm of rain on roughly 12 days, which makes August a wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 05 min on an average August day.
The nearest other city in this atlas is Villeurbanne (92 km away). In August its highs average 26.4°C, about as warm as Grenoble, with 75 mm of rain.
Among the 57 cities listed in France, Grenoble ranks 17th of 57 for the warmest August highs and 57th of 57 for the driest August (rainfall, lowest first). The mean August high of those 57 cities is 25.0°C; Grenoble is 1.3°C warmer than that mean.
From August to September, average highs fall by 4.5°C to 21.8°C, and monthly rainfall rises from 107 mm to 111 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
Grenoble climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C-0.3°C | -0.3°C | 119 | 13.1 | 9.29 h |
| February | 8.5°C0.1°C | 0.1°C | 102 | 11.3 | 10.410 h |
| March | 12.8°C3.1°C | 3.1°C | 109 | 12.9 | 11.912 h |
| April | 16.3°C6.2°C | 6.2°C | 120 | 14.3 | 13.513 h |
| May | 20.0°C10.4°C | 10.4°C | 147 | 16.8 | 14.815 h |
| June | 23.9°C14.4°C | 14.4°C | 127 | 15.3 | 15.616 h |
| July | 26.4°C16.8°C | 16.8°C | 113 | 12.8 | 15.315 h |
| August, selected | 26.3°C16.8°C | 16.8°C | 107 | 12.0 | 14.114 h |
| September | 21.8°C12.8°C | 12.8°C | 111 | 11.6 | 12.613 h |
| October | 17.5°C8.8°C | 8.8°C | 118 | 12.7 | 11.011 h |
| November | 11.4°C3.8°C | 3.8°C | 141 | 13.5 | 9.610 h |
| December | 7.7°C0.7°C | 0.7°C | 133 | 13.4 | 8.89 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
- Villeurbanne in AugustFrance · 92 kmHigh 26.4°C · Low 16.5°C · 75 mm rain
- Lyon in AugustFrance · 93 kmHigh 26.7°C · Low 16.5°C · 77 mm rain
- Saint-Étienne in AugustFrance · 107 kmHigh 24.7°C · Low 14.7°C · 77 mm rain
- Geneva in AugustSwitzerland · 119 kmHigh 24.0°C · Low 15.5°C · 117 mm rain
- Avignon in AugustFrance · 154 kmHigh 30.7°C · Low 19.0°C · 42 mm rain
- Turin in AugustItaly · 155 kmHigh 26.8°C · Low 16.8°C · 58 mm rain
- Lausanne in AugustSwitzerland · 165 kmHigh 22.8°C · Low 16.8°C · 116 mm rain
- Nîmes in AugustFrance · 184 kmHigh 30.4°C · Low 19.1°C · 34 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 Grenoble) is explained once on the Grenoble year overview and on the Sources, method and limits page.