December weather forecast
Newport, OR

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Light waves wash to the pebbly and stony shores overlooking the high rock cliffs holding the iconic Yaquina Head Lighthouse in Newport, Oregon
Light waves wash to the pebbly and stony shores overlooking the high rock cliffs holding the iconic Yaquina Head Lighthouse in Newport, Oregon

Weather in December

December sees the full force of winter with the year’s lowest temperatures from 40.6°F (4.8°C) to 47.7°F (8.7°C), and highest rainfall levels of 3.07" (78mm). The short daylight hours significantly reduce the amount of sunshine in Newport, Oregon. Despite the steady presence of clouds, December seldom witnesses snowfall of any significant amount. The cold winds blowing at 9.4mph (15.1km/h) add an extra chill to the air, capping off the year in the shroud of winter.

Temperature

The lowest temperatures are recorded in December, with averages reaching a high of 47.7°F (8.7°C) and a low of 40.6°F (4.8°C).

Humidity

The months with the highest humidity in Newport are February, March, November and December, with an average relative humidity of 83%.

Rainfall

The month with the most rainfall is December, when the rain falls for 16.5 days and typically aggregates up to 3.07" (78mm) of precipitation.

Snowfall

In Newport, snow does not fall in March through October and December.

Ocean temperature

In Newport, in December, the average water temperature is 51.1°F (10.6°C).
Note: Swimming at temperatures less than 50°F (10°C) in 51.1°F (10.6°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.

Daylight

December has the shortest days of the year, with an average of 8h and 54min of daylight.
On the first day of December, sunrise is at 7:33 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:46 pm PST.

Sunshine

In Newport, the average sunshine in December is 4.2h.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 in December translates into these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.

Frequently asked questions

What part of the year is the coldest?

December stands out as Newport's coldest month, with an average high-temperature of 47.7°F (8.7°C) and a low-temperature of 40.6°F (4.8°C).

What are December temperatures?

The average high-temperature and low-temperature during December are 47.7°F (8.7°C) and 40.6°F (4.8°C) respectively.

What is the most humid month?

The months with the highest humidity are February, March, November and December, with an average relative humidity of 83%.

What is the average humidity in December?

In December, the average relative humidity is 83%.

What is the rainiest month?

December is the month with the most rainfall. Rain falls for 16.5 days and accumulates 3.07" (78mm) of precipitation.

How much does it rain in December?

In Newport, in December, during 16.5 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

When it does not snow?

March through October and December are months without snowfall.

Does it snow in December?

In December, it doesn't snow. November is the latest month when it typically snows.

What is the ocean temperature in December?

In December, the average ocean temperature is 51.1°F (10.6°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?

December has the shortest days of the year, with an average of 8h and 54min of daylight.

How many hours of daylight does Newport have in December?

In December, the average day length is 8h and 53min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:33 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:46 pm PST.

How long on average sun shines in December in Newport?

In December, the average sunshine duration is 4.2h.

When is the lowest UV index in Newport?

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

How high is the UV index in December?

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

Average temperature in December
Newport, OR

Average temperature in December - Newport, OR
  • Average high temperature in December: 47.7°F

The warmest month (with the highest average high temperature) is August (67.6°F).
The month with the lowest average high temperature is December (47.7°F).

  • Average low temperature in December: 40.6°F

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).

Average pressure in December
Newport, OR

Average pressure in December - Newport, OR
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is September (30.02"Hg).

Average wind speed in December
Newport, OR

Average wind speed in December - Newport, OR
  • Average wind speed in December: 9.4mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in December
Newport, OR

Average humidity in December - Newport, OR
  • Average humidity in December: 83%

The months with the highest relative humidity are February, March, November and December (83%).
The months with the lowest relative humidity are April, May, July, September and October (81%).

Average rainfall in December
Newport, OR

Average rainfall in December - Newport, OR
  • Average rainfall in December: 3.07"

The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Newport, OR

Average rainfall days in December - Newport, OR
  • Average rainfall days in December: 16.5 days

The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (3.7 days).

Average snowfall in December
Newport, OR

Average snowfall in December - Newport, OR
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").

Average snowfall days in December
Newport, OR

Average snowfall days in December - Newport, OR
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

Average sea temperature in December
Newport, OR

Average sea temperature in December - Newport, OR
  • Average sea temperature in December: 51°F

The best month for swimming (with the highest average sea temperature) is July (57.6°F).
The coldest month (with the lowest average sea temperature) is February (49.4°F).

Average daylight in December /
Average sunshine in December
Newport, OR

Average daylight in December / Average sunshine in December - Newport, OR
  • Average daylight in December: 8h and 5min

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

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).

Average sunshine days in December
Newport, OR

Average sunshine days in December - Newport, OR
  • Average sunshine days in December: 11.8 days

The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is March (10.9 days).

Average UV index in December
Newport, OR

Average UV index in December - Newport, OR
  • 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 February, November and December (UV index 2).

Average cloud cover in December
Newport, OR

Average cloud cover in December - Newport, OR
  • Average cloud cover in December: 56

The months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in December
Newport, OR

Average visibility in December - Newport, OR
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).

Newport, Oregon, USA

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