December weather forecastKenai, AK

High rock cliffs of the scenic Spire Cove in Fjords National Park in Kenai, Alaska

December

Weather in December

In Kenai, December manifests the full wrath of winter with heavy snowfall escalating to 8.74" (222mm). Adorned with a thick layer of snow, the city transforms into a white winter paradise. However, limited hours of daylight and meager sunshine hours paint a monochromatic hue to the city's landscape. An increased UV index prevails, making it imperative to bear necessary winter protection. On observing the wind speeds of 9.6mph (15.4km/h) pointing towards gustier conditions, it becomes increasingly essential for locals and visitors alike to ensure adequate safety.

Temperature

The average high-temperature during December registers at a still subzero cold 27°F (-2.8°C), maintaining a close resemblance to the previous month. Kenai indicates a consistently low-temperature of 21.2°F (-6°C) during the nights of December.

Humidity

In Kenai, the average relative humidity in December is 85%.

Rainfall

In Kenai, in December, it is raining for 7.1 days, with typically 1.93" (49mm) of accumulated precipitation. In Kenai, during the entire year, the rain falls for 136.3 days and collects up to 19.49" (495mm) of precipitation.

Snowfall

January through April, September through December are months with snowfall. December is the month with the most snowfall. Snow falls for 12.7 days and accumulates 8.74" (222mm) of snow.

Ocean temperature

In Kenai, Alaska, in December, the average water temperature is 38.8°F (3.8°C).
Note: In swimming exercises, this state is seen as life-threatening and poses serious dangers. The painful sensation of the cold water induces immediate hyperventilation. A specialized swimsuit is required to limit thermal damage.

Daylight

December has the shortest days of the year, with an average of 5h and 54min of daylight.
On the first day of the month, sunrise is at 9:46 am and sunset at 4:02 pm. On the last day of December, sunrise is at 10:12 am and sunset at 4:04 pm AKST.

Sunshine

The month with the least sunshine is December, with an average of 2.9h of sunshine.

UV index

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Updated: Jun 3, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Kenai in December has an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 21.2°F (-6°C).

In December, the average relative humidity is 85%.

In Kenai, in December, during 7.1 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

December is the month with the most snowfall. Snow falls for 12.7 days and accumulates 8.74" (222mm) of snow.

In Kenai, in December, snow falls for 12.7 days, with typically accumulated 8.74" (222mm) of snow.

In December, the average ocean temperature is 38.8°F (3.8°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

With an average of 5h and 54min of daylight, December has the shortest days of the year.

In December, the average day length is 5h and 52min.

On the first day of December, sunrise is at 9:46 am and sunset at 4:02 pm. On the last day of the month, sunrise is at 10:12 am and sunset at 4:04 pm AKST.

With an average of 2.9h of sunshine, December has the least sunshine of the year.

In December, the average sunshine duration is 2.9h.

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

31.1°F

27°F

24.3°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.2mph

10.5mph

9.7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

8.7

12.7

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

14.3

14.9

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Kenai, AK

Average high temperature in December: 27°F

The warmest month (with the highest average high temperature) is July (61.3°F).
The month with the lowest average high temperature is January (24.3°F).

Average low temperature in December: 21.2°F

The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in December
Kenai, AK

Average pressure in December: 29.64"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.64"Hg).

Average wind speed in December
Kenai, AK

Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is December (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in December
Kenai, AK

Average humidity in December: 85%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is May (69%).

Average rainfall in December
Kenai, AK

Average rainfall in December: 1.93"

The wettest month (with the highest rainfall) is October (2.87").
The driest month (with the least rainfall) is June (0.91").

Average rainfall days in December
Kenai, AK

Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is September (16.6 days).
The month with the least rainy days is February (5.5 days).

Average snowfall in December
Kenai, AK

Average snowfall in December: 8.74"

The month with the highest snowfall is December (8.74").
The months with the least snowfall are May, June, July and August (0").

Average snowfall days in December
Kenai, AK

Average snowfall days in December: 12.7 days

The month with the highest number of snowfall days is December (12.7 days).
The months with the least snowfall days are June, July and August (0 days).

Average sea temperature in December
Kenai, AK

Average sea temperature in December: 38.8°F

The best month for swimming (with the highest average sea temperature) is August (53.4°F).
The coldest month (with the lowest average sea temperature) is February (34.2°F).

Average daylight in December /
Average sunshine in December
Kenai, AK

Average daylight in December: 5h and 54min

The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).

Average sunshine in December: 2h and 54min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).

Average sunshine days in December
Kenai, AK

Average sunshine days in December: 14 days

The month with the most sunshine days is June (16.6 days).
The month with the least sunshine days is September (11.5 days).

Average UV index in December
Kenai, AK

Average UV index in December: 2

The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
Kenai, AK

Average cloud cover in December: 58

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is June (Cloud cover 44).

Average visibility in December
Kenai, AK

Average visibility in December: 6mi

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