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
December
Weather in December
Temperature
A change in temperatures is noted as November gives way to December, with average highs reducing from a moderate 15.1°C (59.2°F) to a frosty 9.4°C (48.9°F). Throughout the month of December, Isoshi witnesses an average temperature of 4.2°C (39.6°F).Humidity
In Isoshi, the average relative humidity in December is 76%.Rainfall
In Isoshi, during December, the rain falls for 18.1 days and regularly aggregates up to 65mm (2.56") of precipitation. Throughout the year, there are 207 rainfall days, and 1194mm (47.01") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall in Isoshi. December is the first month it typically snows. Throughout December, in the average 5.5 snowfall days, it receives 36mm (1.42") of snow. Throughout the year, in Isoshi, there are 26.9 snowfall days, and 204mm (8.03") of snow is accumulated.Daylight
December has the shortest days of the year in Isoshi, Japan, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 06:47 and sunset at 16:47. On the last day of the month, sunrise is at 07:05 and sunset at 16:57 JST.
Sunshine
In Isoshi, the average sunshine in December is 5.1h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Isoshi?
What is the average humidity in December in Isoshi?
How much does it rain in Isoshi in December?
When does it start snowing in Isoshi?
What is the month with the shortest days in Isoshi?
How many hours of daylight does Isoshi have in December?
When are sunrise and sunset in December in Isoshi?
How long on average sun shines in December in Isoshi?
What are the months with the lowest UV index in Isoshi?
How high is the UV index in December in Isoshi?
Average temperature in December
Isoshi, Japan
- Average high temperature in December: 9.4°C
The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in December: 4.2°C
The month with the highest average low temperature is August (23.9°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in December
Isoshi, Japan
- Average pressure in December: 1019.4mbar
The month with the highest atmospheric pressure is February (1019.9mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).
Average wind speed in December
Isoshi, Japan
- Average wind speed in December: 11.1km/h
The windiest month (with the highest average wind speed) is January (11.5km/h).
The calmest month (with the lowest average wind speed) is June (8.3km/h).
Average humidity in December
Isoshi, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is July (81%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in December
Isoshi, Japan
- Average rainfall in December: 65mm
The wettest month (with the highest rainfall) is July (196mm).
The driest month (with the least rainfall) is January (49mm).
Average rainfall days in December
Isoshi, Japan
- Average rainfall days in December: 18.1 days
The month with the highest number of rainy days is July (23.2 days).
The month with the least rainy days is November (14.1 days).
Average snowfall in December
Isoshi, Japan
- Average snowfall in December: 36mm
The month with the highest snowfall is January (96mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Isoshi, Japan
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Isoshi, 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 54min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Isoshi, Japan
- Average sunshine days in December: 6.6 days
The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is July (5.6 days).
Average UV index in December
Isoshi, Japan
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Isoshi, Japan
- Average cloud cover in December: 43
The months with the most cloud cover are January and February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Isoshi, Japan
- Average visibility in December: 10km
The months with the highest visibility are November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and October (9km).
