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Weather in Ulsan for April 2026

Your guide to Ulsan weather in April - trends and predictions

    Temperatures

  • Until now, April 2026 in Ulsan has been nearly identical to the historical average, with a temperature of 17.5 °C (showing only a slight deviation of -0.2 °C).

  • The forecast for the upcoming days in Ulsan predicts a temperature of 19.2 °C, which is slightly above the historical average.

  • In general, the average temperature in Ulsan at the beginning of April is 16.6 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 19.3 °C by the end of April.

    • Rain 🌧️

  • Ulsan experiences moderate rainfall in April, with an average of 7 rainy days and a total precipitation of 56.2 mm.

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/7°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
62 %
Avg humidity

Ulsan Weather April

Move between months or click on a day
March
May
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
14°
2
Partly cloudy
16°
3
Overcast
16°
4
Patchy rain possible
16°
5
Patchy rain possible
17°
6
Sunny
19°
7
Sunny
18°
8
Sunny
20°
9
Overcast
15°
10
Patchy rain possible
22°
11
Sunny
20°
12
Moderate rain at times
18°
13
Partly cloudy
18°
14
Heavy rain at times
12°
15
Sunny
21°
16
Sunny
16°
17
Moderate rain
15°
18
Patchy rain possible
22°
19
Partly cloudy
22°
20
Sunny
23°
21
Sunny
20°
22
Sunny
21°
23
Heavy rain
17°
24
Patchy rain possible
15°
25
Patchy rain possible
16°
26
Sunny
21°
27
Sunny
22°
28
Moderate rain
18°
29
Sunny
20°
30
Sunny
23°

Temperatures trend during April in Ulsan

See the weather trend as well as the moving average line

April weather in Ulsan day by day

Click on a date for more information
March May
Date Weather Temperatures Rain UV More
1 Apr. Sunny
Sunny
 14° /5° 2 mm 3
2 Apr. Partly cloudy
Partly cloudy
 16° /5° 1.8 mm 6
3 Apr. Overcast
Overcast
 16° /5° 0.3 mm 5
4 Apr. Patchy rain possible
Patchy rain possible
 16° /6° 19.9 mm 4
5 Apr. Patchy rain possible
Patchy rain possible
 17° /6° 0.2 mm 6
6 Apr. Sunny
Sunny
 19° /5° 0.6 mm 6
7 Apr. Sunny
Sunny
 18° /3° 0 mm 7
8 Apr. Sunny
Sunny
 20° /6° 0 mm 7
9 Apr. Overcast
Overcast
 15° /6° 13.4 mm 3
10 Apr. Patchy rain possible
Patchy rain possible
 22° /10° 0.6 mm 6
11 Apr. Sunny
Sunny
 20° /7° 0 mm 7
12 Apr. Moderate rain at times
Moderate rain at times
 18° /8° 4.9 mm 6
13 Apr. Partly cloudy
Partly cloudy
 18° /7° 10.6 mm 6
14 Apr. Heavy rain at times
Heavy rain at times
 12° /4° 3.3 mm 3
15 Apr. Sunny
Sunny
 21° /11° 0.1 mm 1.9
16 Apr. Sunny
Sunny
 16° /9° 0 mm 2
17 Apr. Moderate rain
Moderate rain
 15° /9° 6 mm 0.5
18 Apr. Patchy rain possible
Patchy rain possible
 22° /12° 1.4 mm 1.3
19 Apr. Partly cloudy
Partly cloudy
 22° /13° 0 mm 2
20 Apr. Sunny
Sunny
 23° /13° 0 mm 5
21 Apr. Sunny
Sunny
 20° /12° 0 mm 5
22 Apr. Sunny
Sunny
 21° /10° 0 mm 4
23 Apr. Heavy rain
Heavy rain
 17° /11° 25.8 mm 3
24 Apr. Patchy rain possible
Patchy rain possible
 15° /13° 1.1 mm 3
25 Apr. Patchy rain possible
Patchy rain possible
 16° /11° 0.1 mm 3
26 Apr. Sunny
Sunny
 21° /10° 0 mm 5
27 Apr. Sunny
Sunny
 22° /12° 0 mm 5
28 Apr. Moderate rain
Moderate rain
 18° /14° 8.1 mm 4
29 Apr. Sunny
Sunny
 20° /6° 0 mm 6
30 Apr. Sunny
Sunny
 23° /9° 0 mm 6
Next
Important Notice
Our weather forecast for Ulsan in April 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.
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Ulsan in April - FAQ

What are the expected maximum and minimum temperatures in Ulsan during April?

Enjoy moderate daytime temperatures of up to 19° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Ulsan during April?

Moderate rainfall is anticipated in Ulsan during April, with a total of 56.2 mm spread over approximately 7 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Ulsan during April?

The average wind speed in Ulsan during April is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

April rainfall patterns in Ulsan

Explore the daily rainfall trends and prepare for Ulsans April weather 💧
Typically, Ulsan has 7 rainy days in April with a total of 56.2 mm of rainfall.

UV exposure in Ulsan during April

Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️

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Location coordinates Where is Ulsan?

Get accurate weather forecasts for Ulsan, located at latitude 35.537 and longitude 129.317. Stay updated with localized weather information tailored for Ulsan.

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