May weather forecast and climate
Ulsan, South Korea

What is the temperature in May in Ulsan?

In May, the average high-temperature is 23.4°C (74.1°F), and the average low-temperature is 12.8°C (55°F).

How much does it rain in Ulsan in May?

In Ulsan, in May, during 9.2 rainfall days, typically, 108.1mm (4.3") of precipitation is accumulated.

How cold is the water in May in Ulsan?

In May, the average sea temperature is 16.3°C (61.3°F). Swimming in 16.3°C (61.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Average temperature in May - Ulsan, South Korea
  • Average high temperature in May: 23.4°C

The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (7.3°C).

  • Average low temperature in May: 12.8°C

The month with the highest average low temperature is August (22.7°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).

Average humidity in May - Ulsan, South Korea
  • Average humidity in May: 66.1%

The month with the highest relative humidity is July (78.9%).
The month with the lowest relative humidity is January (49.6%).

Average rainfall in May - Ulsan, South Korea
  • Average rainfall in May: 108.1mm

The wettest month (with the highest rainfall) is August (240.3mm).
The driest month (with the lowest rainfall) is December (23mm).

Average rainfall days in May - Ulsan, South Korea
  • Average rainfall days in May: 9.2 days

The month with the highest number of rainy days is July (13.5 days).
The month with the lowest number of rainy days is December (3.9 days).

Average sea temperature in May - Ulsan, South Korea
  • Average sea temperature in May: 16.3°C

The best month for swimming (with the highest average sea temperature) is August (25.6°C).
The coldest month (with the lowest average sea temperature) is March (12.3°C).

Average daylight in May / Average sunshine in May - Ulsan, South Korea
  • Average daylight in May: 14h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in May: 6.9h

Months with most sunshine are April and May (Average sunshine: 6.9h).
The month with least sunshine is July (Average sunshine: 4.9h).

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