Mont Blanc Climate and Average Weather
Climate of Mont Blanc: average temperatures, rainfall and seasons month by month.
Climate in Mont Blanc month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | -3° | -17° | 7,6 in | ★☆☆☆☆ |
| February | 1° | -13° | 5,9 in | ★☆☆☆☆ |
| March | 2° | -13° | 4,2 in | ★★☆☆☆ |
| April | 9° | -5° | 3,9 in | ★★☆☆☆ |
| May | 12° | -1° | 4,6 in | ★★☆☆☆ |
| June | 24° | 8° | 3,2 in | ★★☆☆☆ |
| July | 28° | 12° | 2,8 in | ★★☆☆☆ |
| August | 31° | 14° | 2,6 in | ★★☆☆☆ |
| September | 21° | 6° | 3,7 in | ★★☆☆☆ |
| October | 15° | 1° | 7,3 in | ★☆☆☆☆ |
| November | 3° | -12° | 9,3 in | ★☆☆☆☆ |
| December | 1° | -13° | 7,3 in | ★☆☆☆☆ |
Climate type: Polar. Source: Open-Meteo archive (ERA5).
Recent extremes in Mont Blanc
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Mont Blanc compares with nearby places
Annual averages, and the difference against Mont Blanc.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Gran Paradiso National Park | 29 mi | 15°F | +43°F warmer | 49 in |
| Matterhorn | 39 mi | 9°F | +37°F warmer | 46 in |
| Geneva | 43 mi | 54°F | +82°F warmer | 48 in |
| Lake Geneva | 46 mi | 56°F | +84°F warmer | 45 in |
| Jungfrau | 72 mi | 12°F | +39°F warmer | 60 in |
Best time to visit Mont Blanc
Go in June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, November and December - expect the least comfortable mix of heat, cold or rain.
What this means for Mont Blanc
Today is about average for October. The forecast high of 13°F is in line with the 15°F typical for this month.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives. Around 0,8 in is forecast, which is enough to soak trails and slow traffic.
Visibility is down to 0,1 mi - use low beams and leave extra following distance. Gusts to 85 mph will push high-sided vehicles on exposed roads and bridges. Overnight lows near 2°F mean ice is possible on bridges before dawn. Snow is falling now - expect reduced traction and slower journeys.
At 15.774 ft, air here runs roughly 88°F cooler than the same latitude at sea level.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 64°F.
What to pack, what to skip
- A warm mid-layer and gloves for early mornings and evenings
- Insulated outer layer, hat and boots with grip for ice
- Avoid high-elevation trails without traction devices - frozen surfaces persist in shade all day.
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 85 mph.
- If your dates are flexible, avoid January, November and December - historically the least comfortable months here.
Summary
Mont Blanc is a mountain in France. Mont Blanc is a mountain known as the highest summit in the Alps. It sits at 15.774 ft above sea level.
Right now it is 10°F (-12°C) in Mont Blanc with light snow showers. It feels like -10°F. Today runs from 2°F to 13°F. Chance of precipitation is 100%. Sightseeing conditions score 0.7/10 - poor - consider another day.
The best time to visit Mont Blanc is June, July and August. The climate is polar. January, November and December tend to be the least comfortable months. August is the warmest month with average highs near 31°F, while January is the coldest with lows near -17°F.
The closest major airport is Milan Malpensa Airport (MXP), about 91 mi away. Nearby highlights include Gran Paradiso National Park, Matterhorn, Lake Geneva and Jungfrau.
In plain terms. Today is about average for October. The forecast high of 13°F is in line with the 15°F typical for this month. Visibility is down to 0,1 mi - use low beams and leave extra following distance. Gusts to 85 mph will push high-sided vehicles on exposed roads and bridges. Overnight lows near 2°F mean ice is possible on bridges before dawn. Snow is falling now - expect reduced traction and slower journeys.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Mont Blanc
Weather map for Mont Blanc
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Mont Blanc
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Mont Blanc?
Mont Blanc is a mountain in France. Its coordinates are 45.8326, 6.8652. It lies in Europe.
What is the weather like in Mont Blanc right now?
It is currently 10°F (-12°C) with light snow showers. Humidity is 100% and wind is 32 mph.
When is the best time to visit Mont Blanc?
June, July and August offer the most comfortable conditions in Mont Blanc, which has a polar climate. January, November and December are usually the hardest months for outdoor plans.
What time zone is Mont Blanc in?
Mont Blanc observes Europe/Rome (UTC+01:00). The local time is 12:34 AM.
What is the nearest airport to Mont Blanc?
The closest airports are Milan Malpensa Airport (MXP), 91 mi away, Zurich Airport (ZRH), 138 mi away and Venice Marco Polo Airport (VCE), 266 mi away.
What are the top things to do in Mont Blanc?
Popular options include Gran Paradiso National Park, Matterhorn, Lake Geneva, Jungfrau, Jungfraujoch and Eiger.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (mountains) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 27, 2026 at 12:34 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
