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
Coupeville's temperature records reveal December as the coldest month, marked by average highs of 43.7°F (6.5°C) and lows of 38.3°F (3.5°C).Humidity
In Coupeville, the average relative humidity in December is 80%.Rainfall
In December, in Coupeville, the rain falls for 18.7 days. Throughout December, 2.76" (70mm) of precipitation is accumulated. In Coupeville, during the entire year, the rain falls for 183.8 days and collects up to 24.45" (621mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Coupeville, during December, snow falls for 1.6 days and regularly aggregates up to 0.28" (7mm) of snow. Throughout the year, in Coupeville, there are 9.6 snowfall days, and 5.63" (143mm) of snow is accumulated.Ocean temperature
In Coupeville, in December, the average water temperature is 46.2°F (7.9°C).Note: Entering waters of 46.2°F (7.9°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:41 am and sunset at 4:18 pm. On the last day of December, sunrise is at 8:01 am and sunset at 4:26 pm PST.
Sunshine
With an average of 4.6h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 2 in December transforms into this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
What are the coldest months in Coupeville?
Is it cold in Coupeville during December?
What is the average humidity in December in Coupeville?
How many days does it rain in December in Coupeville?
How much does it snow in Coupeville in December?
What is the ocean temperature in December in Coupeville?
What is the month with the shortest days in Coupeville?
How many hours of daylight does Coupeville have in December?
What time are sunrise and sunset in December in Coupeville?
What is the month with the least sunshine in Coupeville?
How many hours of sunshine does Coupeville have in December?
When is the lowest UV index in Coupeville?
What is the UV index reading in December in Coupeville?
Average temperature in December
Coupeville, WA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is February (37.9°F).
Average pressure in December
Coupeville, WA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in December
Coupeville, WA
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is November (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Coupeville, WA
- Average humidity in December: 80%
The months with the highest relative humidity are January, February and March (81%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Coupeville, WA
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is November (3.46").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in December
Coupeville, WA
- Average rainfall days in December: 18.7 days
The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is August (7.5 days).
Average snowfall in December
Coupeville, WA
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Coupeville, WA
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Coupeville, WA
- Average sea temperature in December: 46.2°F
The best month for swimming (with the highest average sea temperature) is August (53°F).
The coldest month (with the lowest average sea temperature) is February (45°F).
Average daylight in December /
Average sunshine in December
Coupeville, WA
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in December
Coupeville, WA
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in December
Coupeville, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Coupeville, WA
- Average cloud cover in December: 52
The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in December
Coupeville, WA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Coupeville, Washington, USA
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