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 arrival of December corresponds with a shift in temperature, down from a moderate 13°C (55.4°F) in November to a frosty 6.9°C (44.4°F). Shiogama upholds a consistent average temperature of 2.2°C (36°F) throughout the nights of December.Humidity
In Shiogama, the average relative humidity in December is 74%.Rainfall
In December, in Shiogama, the rain falls for 10.1 days. Throughout December, 32mm (1.26") of precipitation is accumulated. Throughout the year, there are 133.1 rainfall days, and 706mm (27.8") of precipitation is accumulated.Snowfall
Months with snowfall are January through April and December. December is the first month it typically snows. Throughout December, in the average 5.2 snowfall days, it receives 28mm (1.1") of snow. In Shiogama, during the entire year, snow falls for 24.2 days and aggregates up to 190mm (7.48") of snow.Sea temperature
In December, the average sea temperature in Shiogama, Japan, is 12.7°C (54.9°F).Note: Swimming in 12.7°C (54.9°F) poses a severe threat. Even short exposure to 13°C (55.4°F) is chilling, and going below 10°C (50°F) can cause breathing irregularities and intense cold shock, based on one's stamina.
Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Shiogama.On the first day of December in Shiogama, Japan, sunrise is at 06:33 and sunset at 16:15. On the last day of the month, sunrise is at 06:52 and sunset at 16:25 JST.
Sunshine
The average sunshine in December is 5.6h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Shiogama, Japan. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
Is it cold in Shiogama during December?
What is the average humidity in December in Shiogama?
How many days does it rain in December in Shiogama?
When does it start to snow in Shiogama?
What is the sea water temperature in December in Shiogama?
What is the month with the shortest days in Shiogama?
How many hours of daylight does Shiogama have in December?
When are sunrise and sunset in December in Shiogama?
How long on average sun shines in December in Shiogama?
What is the month with the lowest UV index in Shiogama?
How high is the UV index in December in Shiogama?
Average temperature in December
Shiogama, Japan
- Average high temperature in December: 6.9°C
The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in December: 2.2°C
The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is February (-1°C).
Average pressure in December
Shiogama, Japan
- Average pressure in December: 1016.1mbar
The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in December
Shiogama, Japan
- Average wind speed in December: 15km/h
The windiest month (with the highest average wind speed) is January (15.4km/h).
The calmest month (with the lowest average wind speed) is July (9km/h).
Average humidity in December
Shiogama, Japan
- Average humidity in December: 74%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Shiogama, Japan
- Average rainfall in December: 32mm
The wettest month (with the highest rainfall) is October (105mm).
The driest month (with the least rainfall) is February (23mm).
Average rainfall days in December
Shiogama, Japan
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Shiogama, Japan
- Average snowfall in December: 28mm
The month with the highest snowfall is January (62mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Shiogama, Japan
- Average snowfall days in December: 5.2 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Shiogama, Japan
- Average sea temperature in December: 12.7°C
The best month for swimming (with the highest average sea temperature) is August (23.6°C).
The coldest month (with the lowest average sea temperature) is March (6.9°C).
Average daylight in December /
Average sunshine in December
Shiogama, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in December
Shiogama, Japan
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is May (21.3 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in December
Shiogama, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in December
Shiogama, Japan
- Average cloud cover in December: 42
The month with the most cloud cover is July (Cloud cover 48).
The months with the least cloud cover are May and November (Cloud cover 36).
Average visibility in December
Shiogama, Japan
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, October, November and December (10km).
The months with the lowest visibility are January, May, June, July, August and September (9km).
Shiogama, Japan
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