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
The transition into December indicates a reduction in the average high-temperature, down to a freezing cold -0.2°C (31.6°F) from November's wintry 5.6°C (42.1°F). Wakkanai's December nights experience a subtle temperature dip to an average of -2.9°C (26.8°F).Humidity
In December, the average relative humidity is 76%.Rainfall
In Wakkanai, during December, the rain falls for 5.3 days and regularly aggregates up to 77mm (3.03") of precipitation. In Wakkanai, Japan, during the entire year, the rain falls for 134.7 days and collects up to 731mm (28.78") of precipitation.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 19 days and accumulates 175mm (6.89") of snow.Sea temperature
In Wakkanai, the average seawater temperature in December is 5.9°C (42.6°F).Note: Unprotected swimming in 5.9°C (42.6°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Wakkanai.On the first day of the month, sunrise is at 06:52 and sunset at 15:52. On the last day of December, sunrise is at 07:12 and sunset at 15:59 JST.
Sunshine
In December, the average sunshine in Wakkanai is 1.6h.UV index
The months with the lowest UV index in Wakkanai are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 1 in December transforms into the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is it in Wakkanai in December?
What is the average humidity in December in Wakkanai?
How many days does it rain in December in Wakkanai?
What is the snowiest month in Wakkanai?
How many days does it snow in December in Wakkanai?
What is the sea water temperature in December in Wakkanai?
What is the month with the shortest days in Wakkanai?
How many hours of daylight does Wakkanai have in December?
When is the sunrise / sunset in December in Wakkanai?
How many hours of sunshine does Wakkanai have in December?
When is the lowest UV index in Wakkanai?
What is the UV index reading in December in Wakkanai?
Average temperature in December
Wakkanai, Japan
- Average high temperature in December: -0.2°C
The warmest month (with the highest average high temperature) is August (20.3°C).
The month with the lowest average high temperature is January (-2.9°C).
- Average low temperature in December: -2.9°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (-5.7°C).
Average pressure in December
Wakkanai, Japan
- Average pressure in December: 1010.7mbar
The months with the highest atmospheric pressure are October and November (1014.1mbar).
The month with the lowest atmospheric pressure is July (1008.3mbar).
Average wind speed in December
Wakkanai, Japan
- Average wind speed in December: 28.3km/h
The windiest month (with the highest average wind speed) is December (28.3km/h).
The calmest month (with the lowest average wind speed) is July (17.8km/h).
Average humidity in December
Wakkanai, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is July (88%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Wakkanai, Japan
- Average rainfall in December: 77mm
The wettest month (with the highest rainfall) is August (102mm).
The driest month (with the least rainfall) is April (35mm).
Average rainfall days in December
Wakkanai, Japan
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is October (18.4 days).
The month with the least rainy days is January (2.1 days).
Average snowfall in December
Wakkanai, Japan
- Average snowfall in December: 175mm
The month with the highest snowfall is December (175mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Wakkanai, Japan
- Average snowfall days in December: 19 days
The month with the highest number of snowfall days is January (21.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Wakkanai, Japan
- Average sea temperature in December: 5.9°C
The best month for swimming (with the highest average sea temperature) is August (19.7°C).
The coldest month (with the lowest average sea temperature) is February (2.7°C).
Average daylight in December /
Average sunshine in December
Wakkanai, Japan
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 1h and 4min
The month with the most sunshine is August (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 6min).
Average sunshine days in December
Wakkanai, Japan
- Average sunshine days in December: 2 days
The month with the most sunshine days is May (15.3 days).
The month with the least sunshine days is December (2 days).
Average UV index in December
Wakkanai, Japan
- Average UV index in December: 1
The months with the highest UV index are July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Wakkanai, Japan
- Average cloud cover in December: 85
The month with the most cloud cover is January (Cloud cover 90).
The month with the least cloud cover is September (Cloud cover 37).
Average visibility in December
Wakkanai, Japan
- Average visibility in December: 7km
The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January and December (7km).
Wakkanai, Japan
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