December weather forecastHeda, Japan
December
Weather in December
December, the first month of the winter in Heda, is still a cool month, with an average temperature fluctuating between 4.9°C (40.8°F) and 10.4°C (50.7°F).Temperature
Transition into December marks a drop in the average high-temperature, moving from a refreshing 15.5°C (59.9°F) in November to a fresh 10.4°C (50.7°F). Heda's average low-temperature during December nights is observed to be a wintry 4.9°C (40.8°F).Humidity
In December, the average relative humidity in Heda is 71%.Rainfall
In Heda, during December, the rain falls for 10.4 days and regularly aggregates up to 61mm (2.4") of precipitation. Throughout the year, in Heda, there are 189.9 rainfall days, and 1352mm (53.23") of precipitation is accumulated.Snowfall
Months with snowfall in Heda are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Heda, there are 1.5 snowfall days, and 4mm (0.16") of snow is accumulated.Sea temperature
In December, the average sea temperature is 18.2°C (64.8°F).Note: The majority of people find swimming in 18.2°C (64.8°F) unenjoyable. As the water temperature decreases from 21°C (69.8°F) to 15°C (59°F), breathing becomes more challenging to control.
Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Heda.On the first day of December in Heda, sunrise is at 06:34 and sunset at 16:33. On the last day of the month, sunrise is at 06:52 and sunset at 16:43 JST.
Sunshine
In December, the average sunshine is 6.4h.UV index
The months with the lowest UV index in Heda are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Heda, Japan
- Average high temperature in December: 10.4°C
The warmest month (with the highest average high temperature) is August (28.7°C).
The month with the lowest average high temperature is January (8.2°C).
- Average low temperature in December: 4.9°C
The month with the highest average low temperature is August (22.8°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in December
Heda, Japan
- Average pressure in December: 1016.8mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in December
Heda, Japan
- Average wind speed in December: 12.5km/h
The windiest month (with the highest average wind speed) is March (13.2km/h).
The calmest month (with the lowest average wind speed) is August (10.2km/h).
Average humidity in December
Heda, Japan
- Average humidity in December: 71%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (67%).
Average rainfall in December
Heda, Japan
- Average rainfall in December: 61mm
The wettest month (with the highest rainfall) is July (202mm).
The driest month (with the least rainfall) is January (50mm).
Average rainfall days in December
Heda, Japan
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (21.9 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
Heda, Japan
- Average snowfall in December: 1mm
The month with the highest snowfall is February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Heda, Japan
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.7 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
Heda, Japan
- Average sea temperature in December: 18.2°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).
Average daylight in December /
Average sunshine in December
Heda, Japan
- Average daylight in December: 9h and 54min
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 54min).
- Average sunshine in December: 6h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in December
Heda, Japan
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is January (18.9 days).
The month with the least sunshine days is July (4.3 days).
Average UV index in December
Heda, Japan
- Average UV index in December: 2
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 2).
Average cloud cover in December
Heda, Japan
- Average cloud cover in December: 26
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in December
Heda, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, October, November and December (10km).
The months with the lowest visibility are April, May, June, July, August and September (9km).
