Weather: Jungfrau Marathon
Historical weather data for race day in September. Use this to plan your race strategy, clothing, and hydration.
12°C
Temperature
Range: 8°C – 16°C
72%
Humidity
Moderate
35%
Rain Chance
Possible — check forecast
September
Typical race month
Usually on a Sunday
Conditions
Cool alpine conditions with variable weather. September offers relatively stable conditions but mountain weather can change rapidly. Expect cooler temperatures at higher elevations with possible afternoon thunderstorms.
What to Wear
Light gloves
Useful at the start, tuck away later
Long sleeve or arm warmers
Versatile for cool starts
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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