December weather forecast and climate
Ulsan, South Korea

What is the temperature in December in Ulsan?

In December, in Ulsan, South Korea, the average high-temperature is 9.9°C (49.8°F), and the average low-temperature is -0.3°C (31.5°F).

How many days does it rain in December in Ulsan?

In Ulsan, South Korea, in December, during 3.9 rainfall days, typically, 23mm (0.9") of precipitation is accumulated.

How cold is the water in December in Ulsan?

In December, in Ulsan, South Korea, the average sea temperature is 15.8°C (60.4°F). Swimming in 15.8°C (60.4°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 December - Ulsan, South Korea
  • Average high temperature in December: 9.9°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 December: -0.3°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 December - Ulsan, South Korea
  • Average humidity in December: 52.4%

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 December - Ulsan, South Korea
  • Average rainfall in December: 23mm

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 December - Ulsan, South Korea
  • Average rainfall days in December: 3.9 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 December - Ulsan, South Korea
  • Average sea temperature in December: 15.8°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 December / Average sunshine in December - Ulsan, South Korea
  • Average daylight in December: 9.8h

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 December: 6.3h

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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