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 comes with a decrease in the average high-temperature, falling from a mild 15.8°C (60.4°F) in November to a cool 10.5°C (50.9°F). During the month of December, the nighttime temperature falls to an average of 4.3°C (39.7°F).Humidity
The average relative humidity in December is 61%.Rainfall
The month with the least rainfall in Irumagawa, Japan, is December, when the rain falls for 5.8 days and typically collects 21mm (0.83") of precipitation.Snowfall
In Irumagawa, snow does not fall in April through October and December.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 06:34 and sunset at 16:28. On the last day of the month, sunrise is at 06:52 and sunset at 16:38 JST.
Sunshine
In December, the average sunshine is 6.5h.UV index
In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 3 during December translates into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What is the average December temperature in Irumagawa?
What is the average humidity in December in Irumagawa?
What is the driest month in Irumagawa?
How many days does it rain in December in Irumagawa?
When it does not snow in Irumagawa?
Does it snow in Irumagawa in December?
What is the month with the shortest days in Irumagawa?
What is the average length of the day in December in Irumagawa?
When is the sunrise / sunset in December in Irumagawa?
How long on average sun shines in December in Irumagawa?
What is the UV index reading in December in Irumagawa?
Average temperature in December
Irumagawa, Japan
- Average high temperature in December: 10.5°C
The warmest month (with the highest average high temperature) is August (32°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in December: 4.3°C
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in December
Irumagawa, Japan
- Average pressure in December: 1016.6mbar
The month with the highest atmospheric pressure is November (1018.4mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in December
Irumagawa, Japan
- Average wind speed in December: 10.3km/h
The windiest month (with the highest average wind speed) is April (11.5km/h).
The calmest month (with the lowest average wind speed) is July (8.7km/h).
Average humidity in December
Irumagawa, Japan
- Average humidity in December: 61%
The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (58%).
Average rainfall in December
Irumagawa, Japan
- Average rainfall in December: 21mm
The wettest month (with the highest rainfall) is October (102mm).
The driest month (with the least rainfall) is December (21mm).
Average rainfall days in December
Irumagawa, Japan
- Average rainfall days in December: 5.8 days
The month with the highest number of rainy days is June (18.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Irumagawa, Japan
- Average snowfall in December: 0mm
The month with the highest snowfall is February (39mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days in December
Irumagawa, Japan
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
Irumagawa, 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 3min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The months with the least sunshine are February and November (Average sunshine: 6h and 12min).
Average sunshine days in December
Irumagawa, Japan
- Average sunshine days in December: 24.5 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in December
Irumagawa, Japan
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Irumagawa, Japan
- Average cloud cover in December: 28
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in December
Irumagawa, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are June, July, August, September and October (9km).
Irumagawa, Japan
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