Climate normals · 1970–2000
Ulsan Climate
Ulsan is a city in South Korea (21) with a population of about 1,098,421. Its average annual temperature is 13.8°C (57°F), with roughly 1247 mm of rain per year.
13.8°C
Avg Temp
1247
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
Ulsan Climate
Ulsan has an average annual temperature of 13.8°C (57°F) and receives about 1247 mm of precipitation per year. The warmest month is August and the coldest is January. Figures are 1970–2000 climate normals.
13.8°C
Avg Temp
1247
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 2° / 35° | 34 mm |
| February | 3° / 38° | 43 mm |
| March | 7° / 45° | 66 mm |
| April | 13° / 56° | 104 mm |
| May | 18° / 64° | 105 mm |
| June | 21° / 70° | 177 mm |
| July | 25° / 77° | 228 mm |
| August | 26° / 78° | 208 mm |
| September | 21° / 70° | 151 mm |
| October | 16° / 61° | 56 mm |
| November | 10° / 49° | 50 mm |
| December | 4° / 39° | 25 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Ulsan
The most comfortable months to visit Ulsan are typically September, October and May, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 29°C high). The coldest is January (near -3°C low). July is usually the wettest month.
Where to stay near Ulsan
Planning a trip to Ulsan? Compare hotels and short-term rentals — live availability and prices.
Top-rated places to stay near Ulsan
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Ulsan?
Get climate tips and the best lodging deals for Ulsan by email. No spam, unsubscribe anytime.
Other cities in South Korea
Frequently Asked Questions
The most comfortable months to visit Ulsan are typically September, October and May, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Ulsan, South Korea has an average annual temperature of 13.8°C and about 1247 mm of precipitation per year. The warmest month is August and the coldest is January.
In August, the hottest month, daily highs in Ulsan average about 29°C (85°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.