Best time to visit Seoul

Usually the most comfortable: May, June and October. Typical weather over 2001–2020, not a forecast.

1. January: cold, high -1°, low -11°, about 17 mm of rain, comfort 40 out of 100
   JJan
2. February: cold, high 3°, low -8°, about 27 mm of rain, comfort 48 out of 100
   FFeb
3. March: cold, high 8°, low -3°, about 33 mm of rain, comfort 65 out of 100
   MMar
4. April: cool, high 16°, low 3°, about 65 mm of rain, comfort 82 out of 100
   AApr
5. May: pleasant, high 22°, low 10°, about 86 mm of rain, comfort 92 out of 100
   MMay
6. June: pleasant, high 27°, low 16°, about 108 mm of rain, comfort 88 out of 100
   JJun
7. July: very wet, high 28°, low 20°, about 361 mm of rain, comfort 60 out of 100
   JJul
8. August: very wet, high 28°, low 20°, about 271 mm of rain, comfort 65 out of 100
   AAug
9. September: wet, high 24°, low 14°, about 130 mm of rain, comfort 85 out of 100
   SSep
10. October: pleasant, high 18°, low 7°, about 52 mm of rain, comfort 90 out of 100
    OOct
11. November: cold, high 9°, low -1°, about 48 mm of rain, comfort 65 out of 100
    NNov
12. December: cold, high 1°, low -8°, about 20 mm of rain, comfort 43 out of 100
    DDec

Taller is more comfortable. The brighter bars are the best months; the filled label is this month.

Comfort uses the typical daytime high (most comfortable at 20 to 28°C) and the typical rainfall (most comfortable under 1 mm a day), averaged over 2001–2020. Highs and lows are worked out from the monthly average temperature and the average daily swing, so they are close, not exact. It is not a forecast. Humidity, crowds, prices and festivals are not included, and a mountain or coast can differ from its half-degree grid cell.