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 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
December brings a decrease in the average high-temperature, shifting from a comfortable 16.5°C (61.7°F) in November to a cool 11.5°C (52.7°F). December nights cool down to an average low-temperature of 6.4°C (43.5°F).Humidity
In Heiwajima, the average relative humidity in December is 64%.Rainfall
December is the month with the least rainfall. Rain falls for 9.1 days and accumulates 36mm (1.42") of precipitation.Snowfall
April through December are months without snowfall.Daylight
The month with the shortest days in Heiwajima, Japan, is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 06:32 and sunset at 16:28. On the last day of the month, sunrise is at 06:50 and sunset at 16:37 JST.
Sunshine
The average sunshine in December is 6.1h.UV index
The months with the lowest UV index in Heiwajima are January through March, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 3 in December translates into these instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What is the temperature in December in Heiwajima?
What is the average humidity in December in Heiwajima?
What is the driest month in Heiwajima?
How many days does it rain in December in Heiwajima?
When it does not snow in Heiwajima?
Does it snow in Heiwajima in December?
What is the month with the shortest days in Heiwajima?
How many hours of daylight does Heiwajima have in December?
What time are sunrise and sunset in December in Heiwajima?
How many hours of sunshine does Heiwajima have in December?
When is the lowest UV index in Heiwajima?
What is the UV index intensity in December in Heiwajima?
Average temperature in December
Heiwajima, Japan
- Average high temperature in December: 11.5°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in December: 6.4°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (3.4°C).
Average pressure in December
Heiwajima, Japan
- Average pressure in December: 1016.2mbar
The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in December
Heiwajima, Japan
- Average wind speed in December: 15km/h
The windiest month (with the highest average wind speed) is April (17.3km/h).
The calmest month (with the lowest average wind speed) is June (13.6km/h).
Average humidity in December
Heiwajima, Japan
- Average humidity in December: 64%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (61%).
Average rainfall in December
Heiwajima, Japan
- Average rainfall in December: 36mm
The wettest month (with the highest rainfall) is October (100mm).
The driest month (with the least rainfall) is December (36mm).
Average rainfall days in December
Heiwajima, Japan
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is June (16 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Heiwajima, Japan
- Average snowfall in December: 0mm
The month with the highest snowfall is February (37mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Heiwajima, Japan
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Heiwajima, Japan
- 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in December
Heiwajima, Japan
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Heiwajima, Japan
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in December
Heiwajima, Japan
- Average cloud cover in December: 32
The months with the most cloud cover are June and October (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in December
Heiwajima, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Heiwajima, Japan
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