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 start of December involves a temperature drop, moving from a refreshing 17.2°C (63°F) in November to a cool 11.4°C (52.5°F). Nights in December in Shimabara, Japan, exhibit a minor reduction to an average low temperature of 6.9°C (44.4°F).Humidity
In Shimabara, the average relative humidity in December is 72%.Rainfall
In December, in Shimabara, the rain falls for 12.4 days. Throughout December, 51mm (2.01") of precipitation is accumulated. Throughout the year, there are 163.3 rainfall days, and 865mm (34.06") of precipitation is accumulated.Snowfall
Months with snowfall in Shimabara are January, February and December. December is the first month it typically snows in Shimabara. Throughout December, in the average 1.1 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, in Shimabara, there are 5 snowfall days, and 11mm (0.43") of snow is accumulated.Sea temperature
In Shimabara, in December, the average water temperature is 18.8°C (65.8°F).Note: The majority find it unenjoyable to swim in 18.8°C (65.8°F). Breathing becomes tougher as the water temperature descends under 21°C (69.8°F).
Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 07:02 and sunset at 17:12. On the last day of the month, sunrise is at 07:20 and sunset at 17:22 JST.
Sunshine
In Shimabara, the average sunshine in December is 5.1h.UV index
December is the month with the lowest UV index in Shimabara, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What are the temperatures in Shimabara in December?
What is the average humidity in December in Shimabara?
How much does it rain in Shimabara in December?
When does it start snowing in Shimabara?
What is the sea temperature in December in Shimabara?
What is the month with the shortest days in Shimabara?
What is the average length of the day in December in Shimabara?
When is the sunrise / sunset in December in Shimabara?
How many hours of sunshine does Shimabara have in December?
What is the month with the lowest UV index in Shimabara?
What is the UV index intensity in December in Shimabara?
Average temperature in December
Shimabara, Japan
- Average high temperature in December: 11.4°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 (9.6°C).
- Average low temperature in December: 6.9°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (4.6°C).
Average pressure in December
Shimabara, Japan
- Average pressure in December: 1021.4mbar
The month with the highest atmospheric pressure is January (1021.9mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed in December
Shimabara, Japan
- Average wind speed in December: 12.5km/h
The windiest months (with the highest average wind speed) are February, March and December (12.5km/h).
The calmest month (with the lowest average wind speed) is June (8.9km/h).
Average humidity in December
Shimabara, Japan
- Average humidity in December: 72%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is March (70%).
Average rainfall in December
Shimabara, Japan
- Average rainfall in December: 51mm
The wettest month (with the highest rainfall) is July (183mm).
The driest month (with the least rainfall) is January (28mm).
Average rainfall days in December
Shimabara, Japan
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is October (9.8 days).
Average snowfall in December
Shimabara, Japan
- Average snowfall in December: 3mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Shimabara, Japan
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (2.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Shimabara, Japan
- Average sea temperature in December: 18.8°C
The best month for swimming (with the highest average sea temperature) is August (27.8°C).
The coldest month (with the lowest average sea temperature) is March (15.5°C).
Average daylight in December /
Average sunshine in December
Shimabara, 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 1min
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 0min).
Average sunshine days in December
Shimabara, Japan
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in December
Shimabara, Japan
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Shimabara, Japan
- Average cloud cover in December: 43
The month with the most cloud cover is June (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 30).
Average visibility in December
Shimabara, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
Shimabara, Japan
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