Weather: Montreal Marathon
Historical weather data for race day in September. Use this to plan your race strategy, clothing, and hydration.
🌡️
16°C
Temperature
Range: 11°C – 21°C
💧
65%
Humidity
Moderate
🌧️
35%
Rain Chance
Possible — check forecast
📅
September
Typical race month
Usually on a Sunday
📝 Conditions
Early autumn weather with mild temperatures and comfortable running conditions. Occasionally cool mornings with potential for rain, but generally favorable for marathon running.
👟 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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