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
In December, Seward experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 29.7°F (-1.3°C) in November to a still freezing cold 27°F (-2.8°C). December's average low-temperature is a still freezing cold 18.3°F (-7.6°C), reflecting a minor difference from the day's peak temperatures.Humidity
March, April and December, with an average relative humidity of 87%, are the most humid months.Rainfall
December is the month with the most rainfall. Rain falls for 11.9 days and accumulates 7.64" (194mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 12.9 days. Throughout December, 15.91" (404mm) of snow is accumulated. Throughout the year, there are 72 snowfall days, and 73.19" (1859mm) of snow is accumulated.Ocean temperature
In Seward, in December, the average water temperature is 43.3°F (6.3°C).Note: Diving into 43.3°F (6.3°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.
Daylight
With an average of 6h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 9:35 am and sunset at 3:58 pm. On the last day of December, sunrise is at 10:00 am and sunset at 4:01 pm AKST.
Sunshine
January and December, with an average of 3.1h of sunshine, are months with the least sunshine.UV index
January, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 1 during December translates into the following directions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the most humid month?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
How many days does it snow in December?
How cold is the water in December?
What is the month with the shortest days?
How many hours of daylight does Seward have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Seward, AK
- Average high temperature in December: 27°F
The warmest month (with the highest average high temperature) is July (56.8°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Seward, AK
- Average pressure in December: 29.62"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is November (29.61"Hg).
Average wind speed in December
Seward, AK
- Average wind speed in December: 8.4mph
The windiest month (with the highest average wind speed) is November (8.9mph).
The calmest month (with the lowest average wind speed) is June (4.8mph).
Average humidity in December
Seward, AK
- Average humidity in December: 87%
The months with the highest relative humidity are March, April and December (87%).
The month with the lowest relative humidity is June (80%).
Average rainfall in December
Seward, AK
- Average rainfall in December: 7.64"
The wettest month (with the highest rainfall) is December (7.64").
The driest month (with the least rainfall) is June (2.09").
Average rainfall days in December
Seward, AK
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is August (19 days).
The month with the least rainy days is February (7.6 days).
Average snowfall in December
Seward, AK
- Average snowfall in December: 15.91"
The month with the highest snowfall is February (18.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Seward, AK
- Average snowfall days in December: 12.9 days
The month with the highest number of snowfall days is March (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Seward, AK
- Average sea temperature in December: 43.3°F
The best month for swimming (with the highest average sea temperature) is August (56°F).
The coldest month (with the lowest average sea temperature) is March (39°F).
Average daylight in December /
Average sunshine in December
Seward, AK
- Average daylight in December: 6h and 0min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).
Average sunshine days in December
Seward, AK
- Average sunshine days in December: 11 days
The month with the most sunshine days is January (13.8 days).
The month with the least sunshine days is September (10.6 days).
Average UV index in December
Seward, AK
- Average UV index in December: 1
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, October, November and December (UV index 1).
Average cloud cover in December
Seward, AK
- Average cloud cover in December: 55
The month with the most cloud cover is December (Cloud cover 55).
The months with the least cloud cover are March and November (Cloud cover 50).
Average visibility in December
Seward, AK
- Average visibility in December: 5mi
The months with the highest visibility are June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May and December (5mi).
Seward, Alaska, USA
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