Weather: Basel Marathon
Typical climate in May (an estimate, not measured race-day data). Use it to plan your race strategy, clothing, and hydration.
Typical climate for the race month — an estimate, not a forecast or a race-day record
15°C
Temperature
Range: 10°C – 20°C
71%
Humidity
Moderate
38%
Rain Chance
Possible — check forecast
May
Typical race month
Usually on a Sunday
Conditions
In mid-to-late May Basel averages a daytime high of about 20°C and a low of about 10°C, with measurable rain on roughly eleven or twelve days of the month.
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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