December weather forecast
Suquamish, WA

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Weather in December

The first month of the winter, December, is still a chilly month in Suquamish, Washington, with an average temperature fluctuating between 43.5°F (6.4°C) and 36.5°F (2.5°C).

Temperature

Suquamish's temperature records reveal December as the coldest month, marked by average highs of 43.5°F (6.4°C) and lows of 36.5°F (2.5°C).

Humidity

January, February, November and December, with an average relative humidity of 84%, are the most humid months.

Rainfall

In Suquamish, during December, the rain falls for 17.1 days and regularly aggregates up to 3.15" (80mm) of precipitation. Throughout the year, in Suquamish, there are 169.8 rainfall days, and 22.44" (570mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Suquamish are January through April, November and December. In Suquamish, during December, snow falls for 1.1 days and regularly aggregates up to 0.31" (8mm) of snow. In Suquamish, during the entire year, snow falls for 8.9 days and aggregates up to 4.61" (117mm) of snow.

Ocean temperature

In December, the average ocean temperature is 46.6°F (8.1°C).
Note: With the appropriate swimsuit, one can swim in 46.6°F (8.1°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.

Daylight

December has the shortest days of the year, with an average of 8h and 30min of daylight.
On the first day of December, sunrise is at 7:38 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 4:28 pm PST.

Sunshine

December has the least sunshine of the year in Suquamish, with an average of 4.6h of sunshine.

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 of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the coldest month in Suquamish?

Suquamish's coldest month, December, generally records average temperatures ranging from a high of 43.5°F (6.4°C) to a low of 36.5°F (2.5°C).

Is it cold in Suquamish during December?

Suquamish in December has an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 36.5°F (2.5°C).

What are the most humid months in Suquamish?

January, February, November and December, with an average relative humidity of 84%, are most humid months.

What is the average humidity in December in Suquamish?

The average relative humidity in December is 84%.

How much does it rain in Suquamish in December?

In December, in Suquamish, the rain falls for 17.1 days. Throughout December, 3.15" (80mm) of precipitation is accumulated.

How much does it snow in Suquamish in December?

In Suquamish, in December, during 1.1 snowfall days, 0.31" (8mm) of snow is typically accumulated.

What is the ocean temperature in December in Suquamish?

In Suquamish, the average seawater temperature in December is 46.6°F (8.1°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the month with the shortest days in Suquamish?

With an average of 8h and 30min of daylight, December has the shortest days of the year in Suquamish.

What is the average length of the day in December in Suquamish?

In Suquamish, the average day length in December is 8h and 29min.

What time are sunrise and sunset in December in Suquamish?

On the first day of December in Suquamish, Washington, sunrise is at 7:38 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 4:28 pm PST.

What is the month with the least sunshine in Suquamish?

With an average of 4.6h of sunshine, December has the least sunshine of the year in Suquamish, Washington.

How many hours of sunshine does Suquamish have in December?

The average sunshine duration in December is 4.6h.

What are the months with the lowest UV index in Suquamish?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December in Suquamish?

In December, the average daily maximum UV index in Suquamish is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Suquamish, WA

Average temperature in December - Suquamish, WA
  • Average high temperature in December: 43.5°F

The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is December (43.5°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (36.5°F).

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Average pressure in December
Suquamish, WA

Average pressure in December - Suquamish, WA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in December
Suquamish, WA

Average wind speed in December - Suquamish, WA
  • Average wind speed in December: 5.6mph

The windiest months (with the highest average wind speed) are March and November (6.2mph).
The calmest months (with the lowest average wind speed) are July and August (3.7mph).

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Average humidity in December
Suquamish, WA

Average humidity in December - Suquamish, WA
  • Average humidity in December: 84%

The months with the highest relative humidity are January, February, November and December (84%).
The months with the lowest relative humidity are July and August (72%).

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Average rainfall in December
Suquamish, WA

Average rainfall in December - Suquamish, WA
  • Average rainfall in December: 3.15"

The wettest month (with the highest rainfall) is January (3.43").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days in December
Suquamish, WA

Average rainfall days in December - Suquamish, WA
  • Average rainfall days in December: 17.1 days

The month with the highest number of rainy days is March (19.3 days).
The month with the least rainy days is August (6.2 days).

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Average snowfall in December
Suquamish, WA

Average snowfall in December - Suquamish, WA
  • Average snowfall in December: 0.31"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Suquamish, WA

Average snowfall days in December - Suquamish, WA
  • Average snowfall days in December: 1.1 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).

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Average sea temperature in December
Suquamish, WA

Average sea temperature in December - Suquamish, WA
  • Average sea temperature in December: 46.6°F

The best month for swimming (with the highest average sea temperature) is August (53.2°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).

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Average daylight in December /
Average sunshine in December
Suquamish, WA

Average daylight in December / Average sunshine in December - Suquamish, WA
  • Average daylight in December: 8h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

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Average sunshine days in December
Suquamish, WA

Average sunshine days in December - Suquamish, WA
  • Average sunshine days in December: 11.7 days

The month with the most sunshine days is August (23 days).
The month with the least sunshine days is November (9.4 days).

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Average UV index in December
Suquamish, WA

Average UV index in December - Suquamish, WA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Suquamish, WA

Average cloud cover in December - Suquamish, WA
  • Average cloud cover in December: 54

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in December
Suquamish, WA

Average visibility in December - Suquamish, 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).

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Suquamish, Washington, USA

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