Ulsan
December
Weather in Ulsan for December 2025
Your guide to Ulsan weather in December - trends and predictions
In general, the average temperature in Ulsan at the beginning of December is 9.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 5.7 °C by the end of December.
With an average of 2 rainy days, Ulsan experiences minimal rainfall in December.
Temperatures
Rain 🌧️
29
Dry days
2
Rainy days
0
Snow days
7°/-1°
Temperatures
17 km/h
Avg max wind
56 %
Avg humidity
Ulsan Weather December
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Temperatures trend during December in Ulsan
See the weather trend as well as the moving average line
December weather in Ulsan day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Overcast | 13° /1° | 0.6 mm | 3 | |
| 2 Dec. |  Sunny | 15° /4° | 0 mm | 5 | |
| 3 Dec. | Overcast | 8° /1° | 0 mm | 2 | |
| 4 Dec. |  Partly cloudy | 7° /0° | 0 mm | 3 | |
| 5 Dec. | Overcast | 8° /0° | 0 mm | 2 | |
| 6 Dec. | Overcast | 8° /2° | 0 mm | 2 | |
| 7 Dec. | Partly cloudy | 6° /0° | 0 mm | 3 | |
| 8 Dec. | Sunny | 6° /0° | 0 mm | 3 | |
| 9 Dec. | Overcast | 7° /-1° | 0 mm | 2 | |
| 10 Dec. | Sunny | 8° /0° | 0 mm | 3 | |
| 11 Dec. | Partly cloudy | 9° /0° | 0 mm | 3 | |
| 12 Dec. | Partly cloudy | 8° /0° | 0 mm | 3 | |
| 13 Dec. | Overcast | 7° /0° | 0 mm | 2 | |
| 14 Dec. | Sunny | 4° /0° | 0 mm | 2 | |
| 15 Dec. |  Patchy rain possible | 5° /0° | 0.3 mm | 2 | |
| 16 Dec. | Sunny | 5° /-1° | 0 mm | 3 | |
| 17 Dec. | Partly cloudy | 6° /-1° | 0 mm | 3 | |
| 18 Dec. | Sunny | 3° /-2° | 0 mm | 2 | |
| 19 Dec. | Overcast | 5° /-2° | 0 mm | 2 | |
| 20 Dec. | Overcast | 8° /-2° | 0 mm | 2 | |
| 21 Dec. |  Cloudy | 4° /-1° | 0 mm | 1 | |
| 22 Dec. | Sunny | 3° /-2° | 0 mm | 2 | |
| 23 Dec. | Overcast | 6° /-2° | 0 mm | 2 | |
| 24 Dec. | Sunny | 6° /-2° | 0 mm | 3 | |
| 25 Dec. | Partly cloudy | 8° /-1° | 0 mm | 3 | |
| 26 Dec. | Partly cloudy | 6° /-1° | 0 mm | 3 | |
| 27 Dec. | Overcast | 4° /-2° | 0 mm | 1 | |
| 28 Dec. | Sunny | 2° /-2° | 0 mm | 2 | |
| 29 Dec. | Overcast | 7° /-1° | 0 mm | 2 | |
| 30 Dec. | Overcast | 9° /-2° | 0 mm | 2 | |
| 31 Dec. | Sunny | 4° /0° | 0 mm | 2 | |
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Important Notice
Our weather forecast for Ulsan in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ulsan forecast closer to your planned date for the most up-to-date weather information.
Change Month
Ulsan in December - FAQ
What are the expected maximum and minimum temperatures in Ulsan during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below -1°.
How much rainfall should be expected in Ulsan during December?
Rainfall in Ulsan during December is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 2 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
Will it snow in Ulsan in December 2025?
Ulsan typically sees 0 cm of snowfall during December.
What are the typical wind conditions in Ulsan during December?
The average wind speed in Ulsan during December is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Ulsan
Explore the daily rainfall trends and prepare for Ulsans December weather 💧
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