Weather: San Francisco Marathon
Historical weather data for race day in July. Use this to plan your race strategy, clothing, and hydration.
18°C
Temperature
Range: 14°C – 23°C
65%
Humidity
Moderate
5%
Rain Chance
Low chance of rain
July
Typical race month
Usually on a Sunday
Conditions
Cool and typically dry with moderate winds from the Pacific. Summer fog is common, creating favorable running conditions but limited visibility of landmarks.
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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