Weather: Tokyo Half Marathon
Historical weather data for race day in January. Use this to plan your race strategy, clothing, and hydration.
🌡️
10°C
Temperature
Range: 5°C – 15°C
💧
55%
Humidity
Low — comfortable
🌧️
25%
Rain Chance
Low chance of rain
📅
January
Typical race month
Usually on a Sunday
📝 Conditions
Cool, crisp winter weather typical of Tokyo in January. Occasional rain but generally clear with low humidity, making it ideal running conditions.
👟 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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