Seoul · January
Run in the midday.
Cold: average high 36°F, low 20°F. Layering becomes the workout. Cold mornings warm into runnable midday hours — the windows around noon catch the warmest temperatures.
Avg high / low
36° / 20°F
Humidity
58%
Rain days
6/mo
Wind
10 mph
What January feels like in Seoul
Sunrise
07:44
Mid-month average
Sunset
17:38
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Often the warmest few hours of a cold day. If you can only run once, midday gives you the most temperate window.
Evening
Cold drops back in fast after sunset. Tight window — done before headlamp territory.
What to wear running in Seoul in January
The kit for January in Seoul: cold-weather layers, gloves, and ear coverage on most mornings.
January vs the surrounding months
vs December
-2° avg high
-2 rain days
Seoul in December →
January
36°F avg high
6 rain days
Best: midday
vs February
-5° avg high
+1 rain days
Seoul in February →
Frequently Asked Questions
What is the best time of day to run in Seoul in January?+
Midday. Cold mornings warm into runnable midday hours — the windows around noon catch the warmest temperatures.
What's the average temperature in Seoul in January?+
Average high 36°F, average low 20°F.
How does January compare to surrounding months in Seoul?+
Compared to December (avg high 38°F), January is cooler. Compared to February (avg high 41°F), January is cooler.
Does it rain often in Seoul in January?+
Expect about 6 measurable rain days in January, on average.