Grenoble climate
Grenoble is warmest in August, with average highs of 26 °C, and coldest in January, when nights average -0.7 °C. May is the wettest month (145 mm) and February the driest (100 mm). Figures are 1991–2020 climate normals.
Across a full year Grenoble averages 1,432 mm of rain, 64 days above 25 °C and 53 days below freezing.
France · 218 m elevation · population 158,552 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month August 26 °C
- Coldest month January -0.7 °C
- Driest month February 100 mm
- Wettest month May 145 mm
- Least cloud July 47 % cloud
- Hottest on record June 37 °C
- Coldest on record January -23 °C
What to expectGrenoble through the year
Grenoble has a clear annual cycle: average daily highs run from 7.2 °C in January to 26 °C in August, a swing of 19 °C in mean temperature across the year.
Counted across a normal year, 64 days a year reach 25 °C, 17 of them reach 30 °C, 53 nights drop below freezing. The warmest reading in the 1991–2020 record is 37 °C, in June.
Rain is spread fairly evenly through the year, from 100 mm in February to 145 mm in May. There is no dry season to aim for.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 7.2 °C | 116 mm | 65 % |
| February | 8.2 °C | 100 mm | 61 % |
| March | 12.3 °C | 107 mm | 58 % |
| April | 16.1 °C | 120 mm | 62 % |
| May | 20.2 °C | 145 mm | 64 % |
| June | 23.9 °C | 124 mm | 57 % |
| July | 26.3 °C | 111 mm | 47 % |
| August | 26.3 °C | 108 mm | 49 % |
| September | 21.9 °C | 108 mm | 57 % |
| October | 17.8 °C | 118 mm | 64 % |
| November | 11.5 °C | 143 mm | 67 % |
| December | 7.8 °C | 130 mm | 66 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 7.2 °C | -0.7 °C | 3.1 °C | 17.4 °C | -22.7 °C | 0 | 0 | 16 |
| February | 8.2 °C | -0.1 °C | 4.0 °C | 20.8 °C | -21.3 °C | 0 | 0 | 12 |
| March | 12.3 °C | 3.3 °C | 8.0 °C | 24.7 °C | -12.6 °C | 0 | 0 | 5 |
| April | 16.1 °C | 6.2 °C | 11.5 °C | 27.3 °C | -5.3 °C | 1 | 0 | 1 |
| May | 20.2 °C | 10.3 °C | 15.7 °C | 32.8 °C | -0.2 °C | 4 | 0 | 0 |
| June | 23.9 °C | 14.4 °C | 19.6 °C | 37.1 °C | 3.5 °C | 13 | 3 | 0 |
| July | 26.3 °C | 16.6 °C | 21.9 °C | 36.9 °C | 9.6 °C | 19 | 6 | 0 |
| August | 26.3 °C | 16.6 °C | 21.8 °C | 36.8 °C | 9.3 °C | 19 | 7 | 0 |
| September | 21.9 °C | 12.7 °C | 17.6 °C | 30.9 °C | 3.3 °C | 7 | 0 | 0 |
| October | 17.8 °C | 8.9 °C | 13.4 °C | 29.0 °C | -3.3 °C | 1 | 0 | 0 |
| November | 11.5 °C | 3.5 °C | 7.4 °C | 24.2 °C | -17.2 °C | 0 | 0 | 5 |
| December | 7.8 °C | 0.3 °C | 3.9 °C | 18.7 °C | -17.9 °C | 0 | 0 | 14 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 116 mm | 13 | 9.1 h/day | 65 % | 79 % | 7.2 km/h |
| February | 100 mm | 11 | 10 h/day | 61 % | 77 % | 7.8 km/h |
| March | 107 mm | 13 | 12 h/day | 58 % | 75 % | 8.5 km/h |
| April | 120 mm | 14 | 14 h/day | 62 % | 74 % | 8.7 km/h |
| May | 145 mm | 16 | 15 h/day | 64 % | 76 % | 8.7 km/h |
| June | 124 mm | 15 | 16 h/day | 57 % | 75 % | 8.6 km/h |
| July | 111 mm | 12 | 15 h/day | 47 % | 72 % | 8.5 km/h |
| August | 108 mm | 11 | 14 h/day | 49 % | 72 % | 8.2 km/h |
| September | 108 mm | 11 | 13 h/day | 57 % | 77 % | 8.0 km/h |
| October | 118 mm | 12 | 11 h/day | 64 % | 80 % | 7.8 km/h |
| November | 143 mm | 13 | 9.5 h/day | 67 % | 83 % | 7.3 km/h |
| December | 130 mm | 13 | 8.8 h/day | 66 % | 81 % | 7.3 km/h |
How Grenoble compares
The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.
| Destination | Summer high | Winter low | Rain per year | Days above 25 °C |
|---|---|---|---|---|
| Grenoble | 26 °C | -0.7 °C | 1,432 mm | 64 |
| Lyon · France | 27 °C | 0.5 °C | 943 mm | 64 |
| Saint-Étienne · France | 25 °C | -0.3 °C | 944 mm | 45 |
| Geneva · Switzerland | 24 °C | -1.0 °C | 1,385 mm | 39 |
Planning a trip? See the best time to visit Grenoble.
QuestionsCommon questions about Grenoble’s climate
When is the best time to visit Grenoble?
That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August sit closest to 20 °C on average, August is the warmest month and February the driest. The month-by-month table above has the full picture.
How hot does Grenoble get?
In August, the warmest month, daily highs average 26 °C. About 17 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.
How cold does it get in winter?
Nights average -0.7 °C in January, the coldest month. A normal year has 53 nights below freezing.
Which month is wettest in Grenoble?
May, averaging 145 mm over 16 days with rain. The driest month is February with 100 mm. The year as a whole averages 1,432 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Grenoble rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Data point
- 45.179°, 5.715° , 218 m above sea level (the coordinates the reanalysis values are taken for)
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.