Typical Run Score
66
Good
Seoul · December
Running in Seoul in December
Typical December running conditions in Seoul, and a live Run Score so you can see how today compares with the norm.
Avg temperature
28°F
Cold
Avg dew point
16°F
Comfortable
Best window
8 AM–11 PM
Local time
Seoul · today vs the December normTemperature · dew point · wind · timing
How December compares in Seoul
December ranks 9th of 12 months for running in Seoul, with a typical daytime Run Score of 66 (Good). For reference, the best month is April (score 91) and the hardest is August (score 45). The kindest window in December is typically 8 AM–11 PM. Precipitation falls in roughly 7% of hours this month. Use the live tool below to see how today actually compares with the December norm.
Running weather in nearby cities
Same engine, different climate. Check the best time to run in these cities too.
Running in Seoul in December: FAQ
Is it good to run in Seoul in December?
Generally yes, with sensible timing. The typical daytime Run Score is 66 (Good), with temperatures around 28°F (-2°C) and comfortable dew points. The best window is usually 8 AM–11 PM.
How hot is it for running in Seoul in December?
Typical temperatures average 28°F (-2°C) (Cold) with dew points near 16°F. Dew point (not the thermometer) usually decides how hard the run feels.
What is a good Run Score?
Scores run 0–100. 80–100 is Great (97+ earns a gold star for near-perfect conditions). 65–79 (Good) is solid. 45–64 (Fair) means at least one factor (usually heat or dew point) is slowing you. Below 45 (Poor), expect a noticeably harder effort or hold back for safety.
Why does dew point matter more than temperature?
Your body cools by evaporating sweat. When the dew point climbs above roughly 60°F, the air is too saturated for sweat to evaporate efficiently, so heat builds up even if the thermometer looks reasonable. That's why a 70°F muggy morning can feel harder than a dry 80°F afternoon.
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