Best Time to Visit Seongnam-si
Best time: May, Oct, Apr, Jun.
Aug is warmest (28.8°C high); Jul is rainiest (340 mm).
Seongnam-si weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | 1.1 | -8.1 | 22 | 3.6 |
| Feb | 3.7 | -5.7 | 26 | 4.9 |
| Mar | 9.6 | -0.6 | 46 | 6.3 |
| Apr | 17.3 | 5.8 | 84 | 7.9 |
| May | 22.2 | 11.5 | 96 | 8.7 |
| Jun | 26 | 16.8 | 136 | 8.2 |
| Jul | 28.2 | 21 | 340 | 6.6 |
| Aug | 28.8 | 21.1 | 297 | 6.9 |
| Sep | 24.7 | 15.2 | 151 | 6.5 |
| Oct | 18.8 | 7.8 | 48 | 5.6 |
| Nov | 10.8 | 1 | 50 | 3.9 |
| Dec | 3.9 | -5.2 | 24 | 3.3 |
Average high temperature
Best months by activity
Overall: MayOctAprJun
Beaches: JunAugFebJul
Hiking: OctAprMarMay
Sightseeing: OctMayAprJun
Seongnam-si quick facts
What to pack
Cold months (Jan, Feb, Mar, Nov, Dec): warm layers and a coat.
Wet months (May, Jun, Jul, Aug, Sep): raincoat and umbrella.
Frequently asked questions
When is the best time to visit Seongnam-si?
May, Oct, Apr, Jun.
What is the rainiest month?
Jul, about 340 mm.
What is the warmest month?
Aug, with average highs of 28.8°C.
Where to stay
See Seongnam-si hotels · Book Seongnam-si tours & activities
All destinations · Best time to visit Seoul · Best time to visit Yeoju · Best time to visit Yangsan · Best time to visit Yangju
Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.