Ulsan
May
Weather in Ulsan for May 2026
Your guide to Ulsan weather in May - trends and predictions
In general, the average temperature in Ulsan at the beginning of May is 18 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.3 °C by the end of May.
The climate of Ulsan in May is notably wet, with an average of 12 rainy days, and a total of 132.4 mm of precipitation.
Temperatures
Rain 🌧️
19
Dry days
12
Rainy days
0
Snow days
21°/11°
Temperatures
17 km/h
Avg max wind
74 %
Avg humidity
Ulsan Weather May
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Temperatures trend during May in Ulsan
See the weather trend as well as the moving average line
May weather in Ulsan day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Moderate or heavy rain shower | 22° /12° | 21.5 mm | 5 | |
| 2 May |  Overcast | 20° /9° | 0.1 mm | 5 | |
| 3 May | Moderate or heavy rain shower | 14° /9° | 11.2 mm | 3 | |
| 4 May |  Partly cloudy | 20° /7° | 0 mm | 6 | |
| 5 May | Moderate rain at times | 17° /6° | 4.6 mm | 4 | |
| 6 May | Moderate or heavy rain shower | 14° /10° | 2.7 mm | 3 | |
| 7 May |  Sunny | 19° /6° | 0 mm | 5 | |
| 8 May | Overcast | 20° /9° | 0 mm | 5 | |
| 9 May | Moderate or heavy rain shower | 15° /11° | 22 mm | 4 | |
| 10 May |  Patchy rain possible | 19° /13° | 0.1 mm | 4 | |
| 11 May | Moderate rain at times | 19° /11° | 1 mm | 4 | |
| 12 May | Sunny | 23° /8° | 0 mm | 6 | |
| 13 May | Overcast | 25° /10° | 0 mm | 6 | |
| 14 May | Overcast | 24° /12° | 0 mm | 5 | |
| 15 May | Moderate rain at times | 22° /14° | 1.3 mm | 5 | |
| 16 May | Moderate or heavy rain shower | 23° /16° | 43 mm | 5 | |
| 17 May | Patchy rain possible | 26° /16° | 13.4 mm | 6 | |
| 18 May | Overcast | 21° /12° | 0 mm | 5 | |
| 19 May | Sunny | 23° /12° | 0 mm | 6 | |
| 20 May | Partly cloudy | 27° /18° | 0 mm | 7 | |
| 21 May | Overcast | 25° /17° | 0 mm | 6 | |
| 22 May | Patchy rain possible | 19° /14° | 0.8 mm | 4 | |
| 23 May | Partly cloudy | 18° /11° | 0 mm | 5 | |
| 24 May | Moderate or heavy rain shower | 14° /11° | 8.6 mm | 3 | |
| 25 May | Patchy rain possible | 18° /11° | 1.9 mm | 4 | |
| 26 May | Patchy rain possible | 21° /10° | 0 mm | 5 | |
| 27 May |  Thundery outbreaks possible | 23° /12° | 0.1 mm | 5 | |
| 28 May | Patchy rain possible | 23° /13° | 0.1 mm | 5 | |
| 29 May | Sunny | 21° /11° | 0 mm | 6 | |
| 30 May | Partly cloudy | 20° /11° | 0 mm | 6 | |
| 31 May | Sunny | 23° /11° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Ulsan in May 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 May - FAQ
What are the expected maximum and minimum temperatures in Ulsan during May?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Ulsan during May?
Significant rainfall exceeding 132.4 mm is expected in Ulsan during May, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ulsan during May?
The average wind speed in Ulsan during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Ulsan
Explore the daily rainfall trends and prepare for Ulsans May weather 💧
UV exposure in Ulsan during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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