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Ulsan
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Ulsan Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Ulsan year round climate
- Spring (March–May): Average 9.9–18.3°C, mild climate but with relatively high rainfall, occasional overcast and rainy days. Common activities: Spring outings, hiking. Recommended clothing: Light jacket, comfortable long pants or skirt.
- Summer (June–August): Average 22.4–26.9°C, hot and humid, abundant rainfall. Common activities: Swimming at the beach, enjoying water activities. Recommended clothing: Light and breathable clothing, sun-protective clothing, sun hat.
- Autumn (September–November): Average 16.7–23°C, pleasant and comfortable climate, but September has relatively high rainfall. Common activities: Maple viewing, outdoor excursions. Recommended clothing: Light jacket, long-sleeved shirt.
- Winter (December–February): Average 2.9–4.6°C, cold and dry, occasional snowfall. Common activities: Indoor activities, hot spring bathing. Recommended clothing: Warm jacket, hat, gloves, scarf.
Ulsan climatological average
Annual average temperature: approx. 15°C / Annual rainfall: approx. 1871 mm / Summer humidity: 70%–80% / Rainiest month: September
Ulsan monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
2.9°C
55
February
4.6°C
111.6
March
9.9°C
97.8
April
14.6°C
105.3
May
18.3°C
131.8
June
22.4°C
181.7
July
26.2°C
268.4
August
26.9°C
285.5
September
23°C
377.6
October
16.7°C
80.1
November
11.7°C
75.5
December
3.7°C
100.8
Ulsan weather for the next seven days
3/31
Tuesday
Heavy rain
13.8°C/10.7°C
4/1
Wednesday
Patchy rain nearby
14.9°C/10°C
4/2
Thursday
Sunny
18.7°C/7.6°C
4/3
Friday
Patchy rain nearby
18.7°C/8.7°C
4/4
Saturday
Heavy rain
18.9°C/12°C
4/5
Sunday
Overcast
18.8°C/8.5°C
4/6
Monday
Overcast
14.5°C/6.3°C
