Best Time to Visit Seongnam, Gyeonggi, South Korea
Month-by-month climate guide for planning a trip to Seongnam.
Seongnam does not have a month that clearly fits our sunny profiles. Its practical travel window centres on its warmest (August, 25°C / 77°F) and driest (January, 22 mm / 0.9 in) months. The drier stretch runs through October–April; the wetter half falls in May–September. At the city itself, monthly average temperatures range from -3.5°C / 25.7°F in January to 25°C / 77°F in August, with rainfall from 22 mm / 0.9 in (January) to 340 mm / 13.4 in (July). These are point-value climate normals sampled at Seongnam, Gyeonggi, Korea, Republic of's coordinates — usually more actionable for travellers than the country-wide average. Seongnam's climate is broadly strongly continental. The full month-by-month table below lets you match your travel window against our five weather profiles.
Recommended months
| Month | Temp | Rain | Feels like |
|---|---|---|---|
| October | 13.3°C55.9°F | 48 mm1.9″ | — |
| May | 16.9°C62.4°F | 96 mm3.8″ | — |
| November | 5.9°C42.6°F | 50 mm2″ | — |
No month at Seongnam matches our sunny profiles. The three above are the driest-and-warmest fallback.
Frequently asked questions
When is the best time to visit Seongnam?
Seongnam doesn't have a month that clearly matches our sunny profiles. The practical travel window centres on January (driest, ~22 mm / 0.9 in) and August (warmest, 25°C / 77°F). Because these are point values at the city, they can differ substantially from Korea, Republic of's national average.
When is the rainy season in Seongnam?
The rainy season at Seongnam, Gyeonggi runs through May–September, when monthly rainfall exceeds the annual median of about 84 mm / 3.3 in. The wettest single month is July (340 mm / 13.4 in).
What is the driest month in Seongnam?
The driest month in Seongnam is January, averaging about 22 mm / 0.9 in of rainfall. Temperature that month averages -3.5°C / 25.7°F.
What months should I avoid visiting Seongnam?
The least comfortable months for travel to Seongnam — based on point-value climate at the city — are January, February, March, July, August, September, December. These are the wettest or coolest months at this location. Rainfall peaks at 340 mm / 13.4 in in July, and the coldest month averages -3.5°C / 25.7°F.
Is Seongnam climate different from Korea, Republic of overall?
Yes, usually. Our Seongnam figures are point-value climate normals sampled at the city itself, while our Korea, Republic of figures are area-weighted averages across the whole country. The two can diverge substantially in geographically diverse or elevation-varied countries. The month-by-month table below reflects Seongnam specifically — usually the more actionable data for a traveller planning to spend time in the city.