Weather: Seoul Half Marathon
Historical weather data for race day in April. Use this to plan your race strategy, clothing, and hydration.
15°C
Temperature
Range: 10°C – 20°C
55%
Humidity
Low — comfortable
25%
Rain Chance
Low chance of rain
April
Typical race month
Usually on a Sunday
Conditions
Mild spring weather with comfortable temperatures and moderate humidity. Light winds are common along the Han River; occasional showers possible but generally favorable running conditions.
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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