Ulsan Weather and Climate: A Comprehensive Guide
The temperature in Ulsan can vary greatly throughout the year.
The temperatures shift from very warm
to cold.
It also has a notably wet climate with much precipitation.
Now, let’s break down all the climate details for a clearer picture.
Average maximum day and minimum night temperature
Depending on the time of the year, temperatures range from very warm to chilly in Ulsan. Average maximum daytime temperatures range from a very warm 30°C in August, the warmest time of the year, to a chilly 8°C during cooler months like January.
At night, temperatures typically drop to an average of around -1°C during these months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Ulsan has a relatively rain/snowy climate with high precipitation levels, averaging 1267 mm of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, August receives heavy rainfall, averaging 214 mm of precipitation, recorded across 11 rainy days. In contrast, the drier season, December brings less rainfall, with 29 mm over 5 rainy days. For more details, please visit our Ulsan Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
While the amount of sunshine in Ulsan varies throughout the year, all seasons offer their own charm. Enjoy up to 7.2 hours of daily sun in May, and experience slightly darker atmosphere in July, with about 5.1 hours of daily sunlight. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Ulsan.
The city experiences its highest humidity in July, reaching 77%. In January, the humidity drops to its lowest level at 48%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
clear and no rain almost clear and no rain clear and no rainForecast for Ulsan
5 m/s
4 m/s
3 m/s
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Ulsan in South Korea
During the months of May, June and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in June, July, August and September.
Most rainfall (rainy season) is seen in June, July, August and September.
August has an average maximum temperature of 30°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 8°C.
August tops the wettest month list with 214 mm of rainfall.
December is the driest month with 29 mm of precipitation.
May is the sunniest month with an average of 217 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
