Weather forecast for tomorrowUlsan, South Korea

Weather forecast for tomorrow

Sunday 18. Oct 2026

  • 26°C
  • 18°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 23mm
  • Wind: 28km/hSSW 201°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 06:31 KST
  • Sunset: 17:44 KST
  • ▼
On Sunday, in Ulsan, overcast skies will be the dominant feature.
Substantial precipitation is anticipated for tomorrow. Temperature fluctuations between a moderately hot 26°C and a comfortable 18°C are expected.
The temperature of 26°C aligns more with what is typical in September than what is normal in October.
Sunrise will be at 06:31 and sunset at 17:44; tomorrow's daylight will last for 11h and 13min.

Hourly overview

Hourly temperatures

Warmest period: 12h - 15h 27°C.
Coldest hour: 6h 18°C.

Chance of precipitation

Highest chance: 21h 68%.

Hourly weather forecast

  • 0h
  • 19°C
  • Feels like:
    19°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 10km/hE 86°
  • Humidity: 75%
  • Pressure: 1025mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 2h
  • 19°C
  • Feels like:
    19°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 7km/hE 94°
  • Humidity: 78%
  • Pressure: 1024mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 4h
  • 18°C
  • Feels like:
    18°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 6km/hS 176°
  • Humidity: 82%
  • Pressure: 1022mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 6h
  • 18°C
  • Feels like:
    18°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 7km/hS 191°
  • Humidity: 87%
  • Pressure: 1022mbar
  • Visibility: 14km
  • UV index: 0
  • ▼
Sunrise: 06:31
  • 8h
  • 20°C
  • Feels like:
    21°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 8km/hSSW 200°
  • Humidity: 82%
  • Pressure: 1021mbar
  • Visibility: 16km
  • UV index: 1
  • ▼
  • 10h
  • 24°C
  • Feels like:
    24°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 20km/hSSW 198°
  • Humidity: 68%
  • Pressure: 1021mbar
  • Visibility: 16km
  • UV index: 2
  • ▼
  • 12h
  • 25°C
  • Feels like:
    27°C
Cloudy
Cloudy
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 27km/hSSW 197°
  • Humidity: 62%
  • Pressure: 1019mbar
  • Visibility: 16km
  • UV index: 2
  • ▼
  • 14h
  • 25°C
  • Feels like:
    27°C
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 28km/hSSW 200°
  • Humidity: 66%
  • Pressure: 1017mbar
  • Visibility: 16km
  • UV index: 2
  • ▼
  • 16h
  • 25°C
  • Feels like:
    27°C
Cloudy
Cloudy
  • Precip. probability: 16%
  • Precipitation: 0mm
  • Wind: 27km/hSSW 201°
  • Humidity: 70%
  • Pressure: 1016mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 17:44
  • 18h
  • 24°C
  • Feels like:
    25°C
Cloudy
Cloudy
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Wind: 27km/hSSW 204°
  • Humidity: 74%
  • Pressure: 1016mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 20h
  • 24°C
  • Feels like:
    25°C
Showers
Showers
  • Precip. probability: 57%
  • Precipitation: 1mm
  • Wind: 24km/hSSW 208°
  • Humidity: 79%
  • Pressure: 1016mbar
  • Visibility: 11km
  • UV index: 0
  • ▼
  • 22h
  • 23°C
  • Feels like:
    24°C
Rain
Rain
  • Precip. probability: 86%
  • Precipitation: 3mm
  • Wind: 23km/hSSW 213°
  • Humidity: 84%
  • Pressure: 1016mbar
  • Visibility: 8km
  • UV index: 0
  • ▼
Tomorrow, a combination of primarily overcast and occasionally rainy and storm-filled weather is predicted.
Rain is predicted from 19h to 23h. With light precipitation of 3mm, the most intense rain will be falling at 22h and 23h.
The temperature will be between the lowest temperature of 18°C and the highest temperature of 25°C. The warmest part of the day will be from 11h to 17h.
Tomorrow, the forecasted maximum will be more alike with September's average high of 23.8°C than October's 19.3°C. Forecasts show a temperature also more consistent with September's average minimum of 19.2°C rather than the October average of 13.9°C.
Updated: Oct 17, 2026 @ 10:27:02 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, patchy light may appear briefly, but the overall trend is cloudy.

Yes. With a probability of 15%, increased precipitation of 23mm is forecasted.

Tomorrow, the highest temperature will be 26°C, while the lowest temperature will be 18°C.
Tomorrow, the highest temperature will be uncommonly higher than the average maximum of 19.3°C in October. The lowest temperature will be a few degrees higher than the average low of 13.9°C.

On Sunday, in Ulsan, sunrise will be at 06:31 and sunset at 17:44 (KST).

In Ulsan, the length of the day tomorrow will be 11h and 13min.