Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With the beginning of December, the average high-temperature in Ulsan shows a decrease, transitioning from a mild 13.5°C (56.3°F) in November to a chilly 6.7°C (44.1°F). Ulsan's December nights cool down to an average low-temperature of 1.3°C (34.3°F).Humidity
In Ulsan, the average relative humidity in December is 62%.Rainfall
In Ulsan, in December, it is raining for 6 days, with typically 29mm (1.14") of accumulated precipitation. Throughout the year, in Ulsan, there are 129.7 rainfall days, and 902mm (35.51") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, there are 3.5 snowfall days, and 25mm (0.98") of snow is accumulated.Sea temperature
In Ulsan, in December, the average water temperature is 15.8°C (60.4°F).Note: Most people do not find swimming enjoyable in water of 15.8°C (60.4°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:13 and sunset at 17:09. On the last day of December, in Ulsan, sunrise is at 07:31 and sunset at 17:19 KST.
Sunshine
In December, the average sunshine is 6.4h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
Is December cold in Ulsan?
What is the average humidity in December in Ulsan?
How many days does it rain in December in Ulsan?
When does it start to snow in Ulsan?
What is the sea temperature in December in Ulsan?
What is the month with the shortest days in Ulsan?
What is the average length of the day in December in Ulsan?
When are sunrise and sunset in December in Ulsan?
How many hours of sunshine does Ulsan have in December?
What are the months with the lowest UV index in Ulsan?
What is the UV index reading in December in Ulsan?
Average temperature in December
Ulsan, South Korea
- Average high temperature in December: 6.7°C
The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in December: 1.3°C
The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in December
Ulsan, South Korea
- Average pressure in December: 1022.5mbar
The month with the highest atmospheric pressure is January (1023.1mbar).
The month with the lowest atmospheric pressure is July (1007.6mbar).
Average wind speed in December
Ulsan, South Korea
- Average wind speed in December: 17.1km/h
The windiest months (with the highest average wind speed) are January and December (17.1km/h).
The calmest month (with the lowest average wind speed) is June (11.5km/h).
Average humidity in December
Ulsan, South Korea
- Average humidity in December: 62%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is January (60%).
Average rainfall in December
Ulsan, South Korea
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is July (180mm).
The driest month (with the least rainfall) is November (28mm).
Average rainfall days in December
Ulsan, South Korea
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Ulsan, South Korea
- Average snowfall in December: 1mm
The month with the highest snowfall is February (13mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Ulsan, South Korea
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 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: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is May (Average sunshine: 9h and 36min).
The month with the least sunshine is November (Average sunshine: 6h and 0min).
Average sunshine days in December
Ulsan, South Korea
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is July (8.7 days).
Average UV index in December
Ulsan, South Korea
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Ulsan, South Korea
- Average cloud cover in December: 25
The month with the most cloud cover is July (Cloud cover 46).
The month with the least cloud cover is December (Cloud cover 25).
Average visibility in December
Ulsan, South Korea
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
Ulsan, South Korea
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