Best time to visit Grenoble
Month-by-month weather averages for Grenoble.
Grenoble, Auvergne-Rhone-Alpes, France
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 3.5 °C / 38 °F | -3.4 °C / 26 °F | 125 mm / 4.9 in | neither best nor good |
| February | 5.6 °C / 42 °F | -2.5 °C / 28 °F | 96 mm / 3.8 in | neither best nor good |
| March | 9.2 °C / 49 °F | 0.1 °C / 32 °F | 119 mm / 4.7 in | neither best nor good |
| April | 13.1 °C / 56 °F | 3 °C / 37 °F | 106 mm / 4.2 in | neither best nor good |
| May | 16.4 °C / 62 °F | 6.7 °C / 44 °F | 166 mm / 6.5 in | neither best nor good |
| June | 21.1 °C / 70 °F | 11 °C / 52 °F | 128 mm / 5 in | good month |
| July | 23.5 °C / 74 °F | 12.5 °C / 55 °F | 109 mm / 4.3 in | good month |
| August | 23 °C / 73 °F | 12 °C / 54 °F | 101 mm / 4 in | good month |
| September | 18.8 °C / 66 °F | 8.9 °C / 48 °F | 104 mm / 4.1 in | good month |
| October | 14.7 °C / 58 °F | 5.6 °C / 42 °F | 108 mm / 4.2 in | neither best nor good |
| November | 8.3 °C / 47 °F | 0.5 °C / 33 °F | 140 mm / 5.5 in | neither best nor good |
| December | 4.3 °C / 40 °F | -2.7 °C / 27 °F | 151 mm / 5.9 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: good
- JJuly: good
- AAugust: good
- SSeptember: good
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Good
- June–September
Why these months
June · good
In its favour: feels like (high) 21.7 °C / 71 °F, average daily high 21.1 °C / 70 °F, share of daylight that is sunny 79%, precipitation 128 mm / 5 in, average daily low 11 °C / 52 °F, relative humidity 74%.
Against: wet days 15.7 days, days with heavy rain 5 days.
July · good
In its favour: feels like (high) 24.4 °C / 76 °F, average daily high 23.5 °C / 74 °F, share of daylight that is sunny 85%, precipitation 109 mm / 4.3 in, average daily low 12.5 °C / 55 °F, days with heavy rain 3.6 days, relative humidity 71%.
Against: wet days 12.3 days.
August · good
In its favour: feels like (high) 23.5 °C / 74 °F, average daily high 23 °C / 73 °F, share of daylight that is sunny 84%, precipitation 101 mm / 4 in, average daily low 12 °C / 54 °F, days with heavy rain 3.4 days, wet days 11.1 days, relative humidity 72%.
September · good
In its favour: feels like (high) 18.3 °C / 65 °F, average daily high 18.8 °C / 66 °F, share of daylight that is sunny 79%, precipitation 104 mm / 4.1 in, days with heavy rain 3.6 days, average daily low 8.9 °C / 48 °F, wet days 11.8 days.
Against: relative humidity 78%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: best
- MMay: neither
- JJune: good
- JJuly: good
- AAugust: best
- SSeptember: best
- OOctober: good
- NNovember: neither
- DDecember: neither
- Best
- April, August–September
- Good
- June–July, October
Why these months
April · best
In its favour: average daily high 13.1 °C / 56 °F, precipitation 106 mm / 4.2 in, feels like (high) 11.3 °C / 52 °F, share of daylight that is sunny 77%, daylight per day 13.5 h, average daily low 3 °C / 37 °F, days with heavy rain 3.2 days, wind (daily max) 9 km/h / 5 mph.
Against: wet days 13.8 days.
June · good
In its favour: average daily high 21.1 °C / 70 °F, feels like (high) 21.7 °C / 71 °F, average daily low 11 °C / 52 °F, share of daylight that is sunny 79%, daylight per day 15.6 h, precipitation 128 mm / 5 in, wind (daily max) 9 km/h / 5 mph.
Against: wet days 15.7 days, days with heavy rain 5 days.
July · good
In its favour: average daily high 23.5 °C / 74 °F, precipitation 109 mm / 4.3 in, average daily low 12.5 °C / 55 °F, share of daylight that is sunny 85%, daylight per day 15.2 h, days with heavy rain 3.6 days, feels like (high) 24.4 °C / 76 °F, wet days 12.3 days, wind (daily max) 9 km/h / 5 mph.
August · best
In its favour: average daily high 23 °C / 73 °F, precipitation 101 mm / 4 in, average daily low 12 °C / 54 °F, share of daylight that is sunny 84%, daylight per day 14 h, wet days 11.1 days, feels like (high) 23.5 °C / 74 °F, days with heavy rain 3.4 days, wind (daily max) 8 km/h / 5 mph.
September · best
In its favour: average daily high 18.8 °C / 66 °F, precipitation 104 mm / 4.1 in, feels like (high) 18.3 °C / 65 °F, average daily low 8.9 °C / 48 °F, share of daylight that is sunny 79%, daylight per day 12.5 h, days with heavy rain 3.6 days, wet days 11.8 days, wind (daily max) 8 km/h / 5 mph.
October · good
In its favour: average daily high 14.7 °C / 58 °F, precipitation 108 mm / 4.2 in, feels like (high) 13.2 °C / 56 °F, average daily low 5.6 °C / 42 °F, share of daylight that is sunny 74%, wet days 11.4 days, daylight per day 10.9 h, wind (daily max) 8 km/h / 5 mph.
Against: days with heavy rain 4 days.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Montagnes de Lans, 9 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 0.5 °C | 2.5 °C | 6.4 °C | 11.3 °C | 15.7 °C | 21.7 °C | 24.4 °C | 23.5 °C | 18.3 °C | 13.2 °C | 5.9 °C | 1.5 °C |
| Days with heavy rain | 4.5 days | 3.7 days | 4.3 days | 3.2 days | 6.2 days | 5 days | 3.6 days | 3.4 days | 3.6 days | 4 days | 5.3 days | 5.6 days |
| Time rain usually falls | 12 am | 1 pm | 9 am | 6 pm | 5 pm | 6 pm | 6 pm | 6 pm | 5 pm | 4 pm | 8 pm | 1 pm |
| Sunshine per day | 5.8 h | 7.4 h | 8.8 h | 10.5 h | 10.9 h | 12.3 h | 12.9 h | 11.8 h | 9.8 h | 8.1 h | 6.3 h | 5.5 h |
| Relative humidity | 79% | 76% | 72% | 71% | 75% | 74% | 71% | 72% | 78% | 80% | 82% | 80% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 9.7 µg/m³ | 12.5 µg/m³ | 10.2 µg/m³ | 8.7 µg/m³ | 9 µg/m³ | 11.4 µg/m³ | 8 µg/m³ | 8 µg/m³ | 6.5 µg/m³ | 7.4 µg/m³ | 7.7 µg/m³ | 10.2 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 18.1 µg/m³ | 21.3 µg/m³ | 17.6 µg/m³ | 14.4 µg/m³ | 14.4 µg/m³ | 17.9 µg/m³ | 12.6 µg/m³ | 11.9 µg/m³ | 10.3 µg/m³ | 12.4 µg/m³ | 14.2 µg/m³ | 19 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.