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 sea temperature 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 decrease of average high-temperatures is mild in December, with a decline from a fresh 10.8°C (51.4°F) in November to a cold 4.9°C (40.8°F). Kamaishi maintains an average low-temperature of 0.2°C (32.4°F) throughout December's nights.Humidity
The months with the lowest humidity are March, November and December, with an average relative humidity of 74%.Rainfall
In Kamaishi, during December, the rain falls for 13.5 days and regularly aggregates up to 55mm (2.17") of precipitation. In Kamaishi, during the entire year, the rain falls for 172.4 days and collects up to 959mm (37.76") of precipitation.Snowfall
January through April, November and December are months with snowfall in Kamaishi. In Kamaishi, in December, snow falls for 11 days, with typically accumulated 96mm (3.78") of snow. In Kamaishi, during the entire year, snow falls for 55 days and aggregates up to 602mm (23.7") of snow.Sea temperature
In Kamaishi, Japan, the average seawater temperature in December is 12.3°C (54.1°F).Note: It is risky to swim in 12.3°C (54.1°F). Temperatures beneath 10°C (50°F) induce rapid cold shock and hyperventilation.
Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 06:33 and sunset at 16:09. On the last day of December, in Kamaishi, Japan, sunrise is at 06:51 and sunset at 16:19 JST.
Sunshine
In December, the average sunshine is 5.7h.UV index
In December, the average daily maximum UV index in Kamaishi is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 2 in December transforms into this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
Is it cold in Kamaishi during December?
What is the least humid month in Kamaishi?
What is the average humidity in December in Kamaishi?
How many days does it rain in December in Kamaishi?
How many days does it snow in December in Kamaishi?
How cold is the water in December in Kamaishi?
What is the month with the shortest days in Kamaishi?
How many hours of daylight does Kamaishi have in December?
When are sunrise and sunset in December in Kamaishi?
How many hours of sunshine does Kamaishi have in December?
What is the UV index reading in December in Kamaishi?
Average temperature in December
Kamaishi, Japan
- Average high temperature in December: 4.9°C
The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is January (1.8°C).
- Average low temperature in December: 0.2°C
The month with the highest average low temperature is August (19.8°C).
The coldest month (with the lowest average low temperature) is February (-3.3°C).
Average pressure in December
Kamaishi, Japan
- Average pressure in December: 1015mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is July (1009.3mbar).
Average wind speed in December
Kamaishi, Japan
- Average wind speed in December: 18.5km/h
The windiest month (with the highest average wind speed) is January (18.6km/h).
The calmest month (with the lowest average wind speed) is July (10.1km/h).
Average humidity in December
Kamaishi, Japan
- Average humidity in December: 74%
The month with the highest relative humidity is July (89%).
The months with the lowest relative humidity are March, November and December (74%).
Average rainfall in December
Kamaishi, Japan
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is October (156mm).
The driest month (with the least rainfall) is February (36mm).
Average rainfall days in December
Kamaishi, Japan
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in December
Kamaishi, Japan
- Average snowfall in December: 96mm
The month with the highest snowfall is March (182mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Kamaishi, Japan
- Average snowfall days in December: 11 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Kamaishi, Japan
- Average sea temperature in December: 12.3°C
The best month for swimming (with the highest average sea temperature) is August (22.6°C).
The coldest month (with the lowest average sea temperature) is March (6.8°C).
Average daylight in December /
Average sunshine in December
Kamaishi, Japan
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is May (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Kamaishi, Japan
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is July (5.5 days).
Average UV index in December
Kamaishi, Japan
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Kamaishi, Japan
- Average cloud cover in December: 39
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is November (Cloud cover 35).
Average visibility in December
Kamaishi, Japan
- Average visibility in December: 9km
The months with the highest visibility are October and November (10km).
The month with the lowest visibility is July (8km).
Kamaishi, Japan
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