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
A shift in the average high-temperature occurs in December in Sendai, Japan, reducing from a cool 12.5°C (54.5°F) in November to a frosty 6.4°C (43.5°F). Sendai, in December, logs an average low-temperature of 1.5°C (34.7°F), a subtle step down from daytime readings.Humidity
In Sendai, the average relative humidity in December is 76%.Rainfall
In Sendai, in December, it is raining for 9.5 days, with typically 27mm (1.06") of accumulated precipitation. In Sendai, Japan, during the entire year, the rain falls for 152.2 days and collects up to 720mm (28.35") of precipitation.Snowfall
January through April and December are months with snowfall in Sendai. December is the first month it typically snows in Sendai. Throughout December, in the average 4.3 snowfall days, it receives 22mm (0.87") of snow. Throughout the year, in Sendai, there are 27.1 snowfall days, and 195mm (7.68") of snow is accumulated.Sea temperature
In Sendai, the average seawater temperature in December is 12.7°C (54.9°F).Note: Dipping into 12.7°C (54.9°F) below 10°C (50°F) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 13°C (55.4°F) feels cold to the bone.
Daylight
The month with the shortest days in Sendai is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 06:34 and sunset at 16:16. On the last day of the month, sunrise is at 06:53 and sunset at 16:26 JST.
Sunshine
In Sendai, the average sunshine in December is 5.5h.UV index
January through March, November 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 minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold is December in Sendai?
What is the average humidity in December in Sendai?
How many days does it rain in December in Sendai?
When does it start snowing in Sendai?
What is the sea water temperature in December in Sendai?
What is the month with the shortest days in Sendai?
What is the average length of the day in December in Sendai?
When is the sunrise / sunset in December in Sendai?
How long on average sun shines in December in Sendai?
When is the lowest UV index in Sendai?
What is the UV index reading in December in Sendai?
Average temperature in December
Sendai, Japan
- Average high temperature in December: 6.4°C
The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in December: 1.5°C
The month with the highest average low temperature is August (21.4°C).
The coldest months (with the lowest average low temperature) are January and February (-1.7°C).
Average pressure in December
Sendai, Japan
- Average pressure in December: 1016.2mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in December
Sendai, Japan
- Average wind speed in December: 14km/h
The windiest month (with the highest average wind speed) is January (14.4km/h).
The calmest month (with the lowest average wind speed) is July (8.1km/h).
Average humidity in December
Sendai, Japan
- Average humidity in December: 76%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in December
Sendai, Japan
- Average rainfall in December: 27mm
The wettest months (with the highest rainfall) are July and October (111mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in December
Sendai, Japan
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
Sendai, Japan
- Average snowfall in December: 22mm
The month with the highest snowfall is February (63mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Sendai, Japan
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Sendai, Japan
- Average sea temperature in December: 12.7°C
The best month for swimming (with the highest average sea temperature) is August (23.9°C).
The coldest month (with the lowest average sea temperature) is March (7.5°C).
Average daylight in December /
Average sunshine in December
Sendai, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Sendai, Japan
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Sendai, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Sendai, Japan
- Average cloud cover in December: 43
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is May (Cloud cover 36).
Average visibility in December
Sendai, Japan
- Average visibility in December: 10km
The months with the highest visibility are October, November and December (10km).
The month with the lowest visibility is July (8km).
Sendai, Japan
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