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 shift from November to December involves a decrease in the average high-temperature, dropping from a fresh 12°C (53.6°F) to an icy 5.7°C (42.3°F). A steady low-temperature average of 0.8°C (33.4°F) is logged in Namerikawa during December, reflecting a modest dip from daytime readings.Humidity
The average relative humidity in December in Namerikawa is 81%.Rainfall
In Namerikawa, during December, the rain falls for 21.5 days and regularly aggregates up to 161mm (6.34") of precipitation. Throughout the year, there are 218.8 rainfall days, and 1305mm (51.38") of precipitation is accumulated.Snowfall
Months with snowfall in Namerikawa are January through April and December. December is the first month it typically snows in Namerikawa. Throughout December, in the average 10.3 snowfall days, it receives 322mm (12.68") of snow. Throughout the year, in Namerikawa, there are 48 snowfall days, and 1270mm (50") of snow is accumulated.Sea temperature
In December, the average sea temperature in Namerikawa is 15.2°C (59.4°F).Note: Swimming is not an enjoyable activity for the majority when the water is at 15.2°C (59.4°F). The difficulty of controlling breathing increases as the temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the shortest days in Namerikawa is December, with an average of 9h and 42min of daylight.On the first day of December in Namerikawa, sunrise is at 06:44 and sunset at 16:34. On the last day of the month, sunrise is at 07:02 and sunset at 16:44 JST.
Sunshine
The average sunshine in December is 3.8h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index, 1 during December, leads to the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Namerikawa in December?
What is the average humidity in December in Namerikawa?
How many days does it rain in December in Namerikawa?
When does it start to snow in Namerikawa?
What is the sea temperature in December in Namerikawa?
What is the month with the shortest days in Namerikawa?
How many hours of daylight does Namerikawa have in December?
When are sunrise and sunset in December in Namerikawa?
How many hours of sunshine does Namerikawa have in December?
What are the months with the lowest UV index in Namerikawa?
How high is the UV index in December in Namerikawa?
Average temperature in December
Namerikawa, Japan
- Average high temperature in December: 5.7°C
The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (2.6°C).
- Average low temperature in December: 0.8°C
The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is February (-2.8°C).
Average pressure in December
Namerikawa, Japan
- Average pressure in December: 1018.1mbar
The months with the highest atmospheric pressure are February and November (1019.4mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in December
Namerikawa, Japan
- Average wind speed in December: 12km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest months (with the lowest average wind speed) are June and August (7.4km/h).
Average humidity in December
Namerikawa, Japan
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Namerikawa, Japan
- Average rainfall in December: 161mm
The wettest month (with the highest rainfall) is July (179mm).
The driest month (with the least rainfall) is May (64mm).
Average rainfall days in December
Namerikawa, Japan
- Average rainfall days in December: 21.5 days
The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is May (14.4 days).
Average snowfall in December
Namerikawa, Japan
- Average snowfall in December: 322mm
The month with the highest snowfall is January (469mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Namerikawa, Japan
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is January (17.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Namerikawa, Japan
- Average sea temperature in December: 15.2°C
The best month for swimming (with the highest average sea temperature) is August (27°C).
The coldest month (with the lowest average sea temperature) is March (10.8°C).
Average daylight in December /
Average sunshine in December
Namerikawa, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Namerikawa, Japan
- Average sunshine days in December: 4 days
The month with the most sunshine days is May (13.6 days).
The month with the least sunshine days is January (3.5 days).
Average UV index in December
Namerikawa, Japan
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Namerikawa, Japan
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 33).
Average visibility in December
Namerikawa, Japan
- Average visibility in December: 9km
The month with the highest visibility is October (10km).
The month with the lowest visibility is January (8km).
Namerikawa, Japan
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