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
December weather is marked by a drop in the average high-temperature, falling from a comfortable 17.1°C (62.8°F) in November to a cool 11.3°C (52.3°F). December's average low-temperature reading settles at a chilly 6°C (42.8°F).Humidity
In Iwashita, the average relative humidity in December is 72%.Rainfall
In Iwashita, during December, the rain falls for 13.5 days and regularly aggregates up to 69mm (2.72") of precipitation. In Iwashita, Japan, during the entire year, the rain falls for 186.2 days and collects up to 1341mm (52.8") of precipitation.Snowfall
Months with snowfall in Iwashita are January through March and December. The months with the most snowfall in Iwashita are January and December, with an average 24mm (0.94") of accumulated snow.Daylight
December has the shortest days of the year in Iwashita, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 07:00 and sunset at 17:10. On the last day of December, in Iwashita, sunrise is at 07:18 and sunset at 17:21 JST.
Sunshine
In Iwashita, the average sunshine in December is 5.4h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Iwashita, Japan. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Iwashita in December?
What is the average humidity in December in Iwashita?
How much does it rain in Iwashita in December?
What is the snowiest month in Iwashita?
When does it start snowing in Iwashita?
What is the month with the shortest days in Iwashita?
How many hours of daylight does Iwashita have in December?
What time are sunrise and sunset in December in Iwashita?
How many hours of sunshine does Iwashita have in December?
When is the lowest UV index in Iwashita?
How high is the UV index in December in Iwashita?
Average temperature in December
Iwashita, Japan
- Average high temperature in December: 11.3°C
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (9.2°C).
- Average low temperature in December: 6°C
The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure in December
Iwashita, Japan
- Average pressure in December: 1021.2mbar
The month with the highest atmospheric pressure is January (1021.8mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in December
Iwashita, Japan
- Average wind speed in December: 11km/h
The windiest month (with the highest average wind speed) is December (11km/h).
The calmest month (with the lowest average wind speed) is June (8.2km/h).
Average humidity in December
Iwashita, Japan
- Average humidity in December: 72%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (71%).
Average rainfall in December
Iwashita, Japan
- Average rainfall in December: 69mm
The wettest month (with the highest rainfall) is June (266mm).
The driest month (with the least rainfall) is January (48mm).
Average rainfall days in December
Iwashita, Japan
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (23 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in December
Iwashita, Japan
- Average snowfall in December: 24mm
The months with the highest snowfall are January and December (24mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Iwashita, Japan
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is January (4.6 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
Iwashita, Japan
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in December
Iwashita, Japan
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is July (4.8 days).
Average UV index in December
Iwashita, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Iwashita, Japan
- Average cloud cover in December: 41
The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in December
Iwashita, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, August, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (9km).
