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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

5/16
Saturday
Sunny
26.5°C/12.1°C
5/17
Sunday
Sunny
28°C/15.1°C
5/18
Monday
Sunny
29.1°C/15.4°C
5/19
Tuesday
Partly Cloudy
26.7°C/15.4°C
5/20
Wednesday
Sunny
23.7°C/14.3°C
5/21
Thursday
Sunny
24.1°C/13°C
5/22
Friday
Partly Cloudy
24.2°C/13.7°C