Ulsan weather and climate in 2024
Day
9 °C
Night
-1 °C
Sea
16 °C
Precipitation
24 mm
in month
Rainy days
4 days
in month
Daylight
10 hours
average
Sunshine
6 hours
average
Humidity
59 %
Day
9 °C
Night
-1 °C
Sea
16 °C
Precipitation
24 mm
in month
Rainy days
4 days
in month
Daylight
10 hours
average
Sunshine
6 hours
average
Humidity
59 %
Overview: Ulsan
Weather charts for Ulsan
We make the most from 40 years of historical weather data to predict the best weather conditions.
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Beach
7 °C
12 °C13 °C7 °C4 °C
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Weather overview for Ulsan
Weather overview
Ulsan, with its mild yet diverse climate, boasts relatively warm temperatures year-round, ranging from an average high of 6 °C (43 °F) in January to a toasty 30 °C (85 °F) in August. Precipitation varies quite a bit, from the drier months like January with about 24 mm (0.94 in) of rainfall to the heavy rains in July peaking at 245 mm (9.65 in). The number of rainy days shows significant seasonal shifts, from as low as just over three days in December to up to nearly thirteen days during the height of the rainy season in July. Ocean lovers can find sea temperatures gradually increasing from a chill 13 °C (56 °F) in February to a more comfortable 25 °C (78 °F) in August.
January weather
January in Ulsan starts with cold nights, averaging -3 °C (27 °F), while daytime sees temperatures rise to a more moderate 6 °C (43 °F). The number of rainy days is quite low at about 5 days, and the rain doesn't last long, with only 24 mm (0.94 in) of precipitation expected.
February weather
The chill begins to gently ease in February with nights warming up to an average of -1 °C (30 °F) and days climbing to 8 °C (47 °F). The precipitation slightly increases with 43 mm (1.69 in) falling over approximately 5 days.
March weather
March marks the transition into spring for Ulsan, with the night temperatures averaging 3 °C (37 °F) and the daytime highs of 13 °C (55 °F) reflecting a noticeable warm-up. With Ulsan out of its dry season, the number of rainy days edges up to 7 days, and the rainfall is moderate at 65 mm (2.55 in).
April weather
April in Ulsan sees further warming, with night temperatures around 8 °C (46 °F) and daytime averages hitting 19 °C (66 °F). Rainy days tally at about 8 days, and the rain volume increases to 93 mm (3.66 in).
May weather
May presents a significant warmth in Ulsan, with day temperatures hitting an average high of 23 °C (73 °F). Nights are comfortable at 13 °C (55 °F). The rain begins to pick up considerably, indicating the onset of the wet season, with 106 mm (4.17 in) falling over 8.
June weather
By June, Ulsan has fully dived into summer with night temperatures averaging 17 °C (62 °F) and daytime highs reaching a balmy 26 °C (78 °F). The city experiences an increase in humidity, and the number of rainy days peaks at 9 days with a significant 165 mm (6.51 in) of precipitation.
July weather
July is the summit of Ulsan's summer heat with nights staying warm at 21 °C (71 °F) and days sizzling up to 28 °C (83 °F). With the peak of the wet season, there's a high of 13 days of rain, and the deluge reaches 245 mm (9.65 in).
August weather
August continues the trend with very warm nights at an average of 22 °C (72 °F) and the highest day temperatures of the year reaching 30 °C (85 °F). Rainy days see a slight dip to 12 days, but the rain still pours generously with 216 mm (8.49 in) expected.
September weather
September in Ulsan heralds the start of autumn with a noticeable drop in night temperatures to an average of 18 °C (64 °F) and day temperatures moderate to 26 °C (78 °F). The precipitation retreats to 158 mm (6.20 in) spread across 10 days.
October weather
October sees a continued cool down in Ulsan with average nighttime lows of 11 °C (52 °F) and daytime highs around 21 °C (70 °F). With drier weather setting in, the rainy days drop to just over five, and precipitation is relatively low at 55 mm (2.15 in).
November weather
November witnesses a further drop in temperatures in Ulsan, with chilly nights averaging 5 °C (41 °F) and days providing mild warmth at 15 °C (59 °F). The number of rainy days falls even further to 5 days with light rainfall of 44 mm (1.72 in).
December weather
December in Ulsan heralds the onset of winter with the coolest daytime temperatures of the year at 9 °C (48 °F), and chilly nights dipping to about -1 °C (31 °F). The rainfall is at its lowest with roughly 24 mm (0.94 in) and only about 4 days of rain.
FAQs
What kind of temperatures can I expect in Ulsan during January?
January in Ulsan greets you with chilly evenings that can drop to an average of -3 °C (27 °F), but daytime temperatures give a slight respite peaking at an average of 6 °C (43 °F).
How much does it warm up in Ulsan during February?
Ulsan in February is slightly warmer, with night averages of -1 °C (30 °F) and pleasant daytime highs reaching 8 °C (47 °F).
Is March considerably warmer in Ulsan than previous months?
Definitely, March welcomes spring into Ulsan with warmer nights averaging 3 °C (37 °F) and comfortable daytime highs of about 13 °C (55 °F).
How warm does it get in Ulsan during the day in April?
April offers a pleasant embrace with daytime temperatures in Ulsan reaching an enjoyable 19 °C (66 °F), while evenings remain mildly cool.
Does May in Ulsan mark the beginning of warmer summer weather?
Absolutely, May in Ulsan marks the prelude to summer with significantly warmer days peaking at 23 °C (73 °F), perfect for enjoying the outdoor blossoms.
How would you describe the summer climate in Ulsan during June?
June's climate in Ulsan is characterized by warm nights and hot days, providing ample heat that feels like a true Korean summer experience.
How hot can we expect it to get in Ulsan during the peak of summer?
Ulsan's peak summer weather in July can be sweltering with highs of 28 °C (83 °F), making air conditioning a welcome respite from the heat.
What is the average high temperature in Ulsan during August?
In Ulsan, the mercury in August usually hits the year's peak with average highs of a scorching 30 °C (85 °F), serving up the quintessence of summer.
Is September the start of cooler weather in Ulsan?
September indeed ushers in milder weather for Ulsan, with nights cooling to 18 °C (64 °F) and the days tempering down to a comfortable 26 °C (78 °F).
What's the typical weather like in Ulsan during October?
October in Ulsan is pleasantly moderate with cooler nights and warm days, providing a crisp contrast to the balmy summer just past.
As winter approaches, how cold does it get in Ulsan in November?
With winter on the horizon, November in Ulsan gets noticeably cooler, especially at night, though days remain mildly warm enough for outdoor activities.
Does December in Ulsan feel like winter has arrived?
Yes, December's chill definitely signals winter's arrival in Ulsan, with cold nights and the year's lowest daytime temperatures.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.