Weather: UTMB CCC (Ultra-Trail du Mont-Blanc - Marathon Distance)
Historical weather data for race day in August. Use this to plan your race strategy, clothing, and hydration.
🌡️
14°C
Temperature
Range: 8°C – 20°C
💧
65%
Humidity
Moderate
🌧️
35%
Rain Chance
Possible — check forecast
📅
August
Typical race month
Usually on a Saturday
📝 Conditions
Late summer alpine conditions with cool temperatures and variable weather. Afternoon thunderstorms are possible in the mountains; runners must be prepared for rapid weather changes and exposed ridges.
👟 What to Wear
Singlet or short sleeve
Ideal racing temperatures
💧 Hydration Strategy
Before the Race
Normal hydration. Drink to thirst in the 24 hours before. Avoid over-hydrating.
During the Race
Drink at aid stations every 3-4km. Alternate water and sports drink.
After the Race
Rehydrate within 30 minutes of finishing. A drink with electrolytes and some protein helps recovery.
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