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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a frosty 9.3°C (48.7°F) to a wintry 2.5°C (36.5°F). December witnesses an average nighttime temperature of -4.9°C (23.2°F).Humidity
The average relative humidity in December is 82%.Rainfall
The month with the least rainfall is December, when the rain falls for 9.5 days and typically collects 29mm (1.14") of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Mochizuki, in December, during 12.1 snowfall days, 116mm (4.57") of snow is typically accumulated. Throughout the year, there are 60.1 snowfall days, and 829mm (32.64") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 06:39 and sunset at 16:31. On the last day of December, sunrise is at 06:57 and sunset at 16:41 JST.
Sunshine
The average sunshine in December is 5.9h.UV index
In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December translates into the following guidance:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. On your guard! Snow's reflection 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
How cold is December?
What is the average humidity in December?
What is the driest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Mochizuki have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Mochizuki, Japan
- Average high temperature in December: 2.5°C
The warmest month (with the highest average high temperature) is August (25.9°C).
The month with the lowest average high temperature is January (-0.9°C).
- Average low temperature in December: -4.9°C
The month with the highest average low temperature is August (16.5°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure in December
Mochizuki, Japan
- Average pressure in December: 1017.4mbar
The month with the highest atmospheric pressure is November (1019mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in December
Mochizuki, Japan
- Average wind speed in December: 8.5km/h
The windiest month (with the highest average wind speed) is March (9.1km/h).
The calmest month (with the lowest average wind speed) is August (5.7km/h).
Average humidity in December
Mochizuki, Japan
- Average humidity in December: 82%
The months with the highest relative humidity are February, July and September (86%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Mochizuki, Japan
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is July (210mm).
The driest month (with the least rainfall) is December (29mm).
Average rainfall days in December
Mochizuki, Japan
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (28.5 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in December
Mochizuki, Japan
- Average snowfall in December: 116mm
The month with the highest snowfall is March (256mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Mochizuki, Japan
- Average snowfall days in December: 12.1 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mochizuki, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is May (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in December
Mochizuki, Japan
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is July (1.6 days).
Average UV index in December
Mochizuki, Japan
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Mochizuki, Japan
- Average cloud cover in December: 45
The month with the most cloud cover is September (Cloud cover 60).
The month with the least cloud cover is May (Cloud cover 42).
Average visibility in December
Mochizuki, Japan
- Average visibility in December: 8km
The months with the highest visibility are March, April, May and December (8km).
The month with the lowest visibility is September (6km).
