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
The average high-temperature drops in December, from November's enjoyable 16.5°C (61.7°F) to a fresh 11.5°C (52.7°F). In December, Jonanjima reports a consistent average low-temperature of 6.4°C (43.5°F) during the nights.Humidity
In Jonanjima, the average relative humidity in December is 64%.Rainfall
The month with the least rainfall is December, when the rain falls for 9.1 days and typically collects 36mm (1.42") of precipitation.Snowfall
In Jonanjima, snow does not fall in April through December.Daylight
The month with the shortest days in Jonanjima is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 06:31 and sunset at 16:27. On the last day of December, in Jonanjima, sunrise is at 06:50 and sunset at 16:37 JST.
Sunshine
In Jonanjima, Japan, the average sunshine in December is 6.1h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 3 during December leads to these advisories:
Put precautions into practice - Protective measures against sun-induced damage are advised. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What are the temperatures in Jonanjima in December?
What is the average humidity in December in Jonanjima?
What is the driest month in Jonanjima?
How many days does it rain in December in Jonanjima?
When it does not snow in Jonanjima?
Does it snow in Jonanjima in December?
What is the month with the shortest days in Jonanjima?
How many hours of daylight does Jonanjima have in December?
What time are sunrise and sunset in December in Jonanjima?
How long on average sun shines in December in Jonanjima?
What are the months with the lowest UV index in Jonanjima?
What is the UV index intensity in December in Jonanjima?
Average temperature in December
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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
Jonanjima, 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).
Jonanjima, Japan
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