Chamonix-Mont-Blanc
August
Weather in Chamonix-Mont-Blanc for August 2025
Your guide to Chamonix-Mont-Blanc weather in August - trends and predictions
In general, the average temperature in Chamonix-Mont-Blanc at the beginning of August is 19.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 18 °C by the end of August.
Chamonix-Mont-Blanc experiences an exceptionally high level of rainfall in August, with more than 20 rainy days on average.
Is August a good time to visit Chamonix-Mont-Blanc? check out the best time to travel to Chamonix-Mont-Blanc page.
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9
Dry days
22
Rainy days
0
Snow days
19°/9°
Temperatures
9 km/h
Avg max wind
72 %
Avg humidity
Chamonix-Mont-Blanc in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2 19° | 3  17° | ||||
| 4 18° | 5  20° | 6 21° | 7 20° | 8 20° | 9 20° | 10 23° |
| 11  22° | 12  22° | 13 22° | 14 19° | 15 20° | 16 18° | 17 15° |
| 18 10° | 19 15° | 20 18° | 21 16° | 22 20° | 23 20° | 24 22° |
| 25 14° | 26 14° | 27 19° | 28 20° | 29 19° | 30 20° | 31 20° |
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Temperatures trend during August in Chamonix-Mont-Blanc
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Patchy light rain with thunder | 20° /11° | 7.5 mm | 5 | |
| 2 Aug. | Patchy light rain with thunder | 19° /10° | 5.5 mm | 4 | |
| 3 Aug. | Patchy rain possible | 17° /8° | 0.6 mm | 4 | |
| 4 Aug. | Patchy rain possible | 18° /8° | 0 mm | 4 | |
| 5 Aug. | Sunny | 20° /8° | 0 mm | 6 | |
| 6 Aug. | Sunny | 21° /10° | 0 mm | 6 | |
| 7 Aug. | Patchy light rain with thunder | 20° /11° | 1.3 mm | 5 | |
| 8 Aug. | Patchy rain possible | 20° /10° | 0.2 mm | 5 | |
| 9 Aug. | Patchy rain possible | 20° /9° | 0 mm | 5 | |
| 10 Aug. | Sunny | 23° /10° | 0 mm | 6 | |
| 11 Aug. | Moderate or heavy rain shower | 22° /13° | 17.7 mm | 5 | |
| 12 Aug. | Moderate or heavy rain with thunder | 22° /12° | 16.8 mm | 5 | |
| 13 Aug. | Moderate or heavy rain with thunder | 22° /11° | 21.9 mm | 5 | |
| 14 Aug. | Moderate or heavy rain with thunder | 19° /10° | 18 mm | 4 | |
| 15 Aug. | Patchy light rain with thunder | 20° /9° | 9.2 mm | 5 | |
| 16 Aug. | Patchy light rain with thunder | 18° /10° | 14.8 mm | 4 | |
| 17 Aug. | Moderate or heavy rain shower | 15° /10° | 30.9 mm | 4 | |
| 18 Aug. | Patchy light rain with thunder | 10° /7° | 7.5 mm | 3 | |
| 19 Aug. | Patchy rain possible | 15° /7° | 0.5 mm | 4 | |
| 20 Aug. | Patchy rain possible | 18° /8° | 1.4 mm | 4 | |
| 21 Aug. | Patchy rain possible | 16° /8° | 0.1 mm | 4 | |
| 22 Aug. | Sunny | 20° /8° | 0 mm | 6 | |
| 23 Aug. | Sunny | 20° /9° | 0 mm | 6 | |
| 24 Aug. | Patchy rain possible | 22° /10° | 1.4 mm | 5 | |
| 25 Aug. | Patchy light rain with thunder | 14° /9° | 4.9 mm | 3 | |
| 26 Aug. | Patchy light rain with thunder | 14° /8° | 1.4 mm | 3 | |
| 27 Aug. | Patchy rain possible | 19° /8° | 2.1 mm | 4 | |
| 28 Aug. | Patchy rain possible | 20° /9° | 1.9 mm | 5 | |
| 29 Aug. | Patchy rain possible | 19° /10° | 2.4 mm | 4 | |
| 30 Aug. | Moderate rain at times | 20° /10° | 1.5 mm | 5 | |
| 31 Aug. | Patchy light rain with thunder | 20° /10° | 4.2 mm | 5 | |
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Important Notice
Our weather forecast for Chamonix-Mont-Blanc in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chamonix-Mont-Blanc forecast closer to your planned date for the most up-to-date weather information.
Chamonix-Mont-Blanc in August - FAQ
What are the expected maximum and minimum temperatures in Chamonix-Mont-Blanc during August?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Chamonix-Mont-Blanc during August?
Significant rainfall exceeding 173.5 mm is expected in Chamonix-Mont-Blanc during August, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Chamonix-Mont-Blanc during August?
The average wind speed in Chamonix-Mont-Blanc during August is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Chamonix-Mont-Blanc in August?
As you prepare for your trip to Chamonix-Mont-Blanc in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Chamonix-Mont-Blanc, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
August rainfall patterns in Chamonix-Mont-Blanc
Explore the daily rainfall trends and prepare for Chamonix-Mont-Blancs August weather 💧
UV exposure in Chamonix-Mont-Blanc during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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