Best Time to Visit Ulsan, Ulsan, South Korea
Month-by-month climate guide for planning a trip to Ulsan.
Ulsan does not have a month that clearly fits our sunny profiles. Its practical travel window centres on its warmest (August, 25.7°C / 78.3°F) and driest (December, 25 mm / 1 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 1.6°C / 34.9°F in January to 25.7°C / 78.3°F in August, with rainfall from 25 mm / 1 in (December) to 228 mm / 9 in (July). These are point-value climate normals sampled at Ulsan, Ulsan, Korea, Republic of's coordinates — usually more actionable for travellers than the country-wide average. Ulsan's climate is broadly Mediterranean-style. 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 | 15.9°C60.6°F | 56 mm2.2″ | — |
| November | 9.7°C49.5°F | 50 mm2″ | — |
| December | 4°C39.2°F | 25 mm1″ | — |
No month at Ulsan matches our sunny profiles. The three above are the driest-and-warmest fallback.
Frequently asked questions
When is the best time to visit Ulsan?
Ulsan doesn't have a month that clearly matches our sunny profiles. The practical travel window centres on December (driest, ~25 mm / 1 in) and August (warmest, 25.7°C / 78.3°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 Ulsan?
The rainy season at Ulsan, Ulsan runs through May–September, when monthly rainfall exceeds the annual median of about 103 mm / 4.1 in. The wettest single month is July (228 mm / 9 in).
What is the driest month in Ulsan?
The driest month in Ulsan is December, averaging about 25 mm / 1 in of rainfall. Temperature that month averages 4°C / 39.2°F.
What months should I avoid visiting Ulsan?
The least comfortable months for travel to Ulsan — based on point-value climate at the city — are January, February, March, June, July, August, December. These are the wettest or coolest months at this location. Rainfall peaks at 228 mm / 9 in in July, and the coldest month averages 1.6°C / 34.9°F.
Is Ulsan climate different from Korea, Republic of overall?
Yes, usually. Our Ulsan 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 Ulsan specifically — usually the more actionable data for a traveller planning to spend time in the city.