Seward, Alaska weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: July – August
What is the weather like in Seward, Alaska in December?
In December, Seward, Alaska is freezing cold: daytime highs average 0 °C, and nights often drop below freezing (−4 °C). The sea averages 6.5 °C – swimming is only for the hardy. The sun is scarce, with only about 1 hours a day. Precipitation, often as snow, falls on about 20 days, totalling 340 mm. Snow falls on about 18 days. All in all, December is not an ideal month for a holiday in Seward, Alaska.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 0 | 0 | 0 |
| Day | 1° | 0° | −1° |
| Night | −3° | −4° | −5° |
| Sea | 8° | 7° | 6° |
| Sun | 2 h | 1 h | 2 h |
| Rain days | 19 | 20 | 19 |
More details for December
- Daylight
- 5 h 55 min09:55 – 15:50
- UV index
- 0 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 78 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 18 days1 cm or more of fresh snowAll months
- Time zone
- UTC−9America/Anchorage
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in December
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
Seward, Alaska in December: quick answers
Is Seward, Alaska hot in December?
No. In December, Seward, Alaska is freezing cold: daytime highs average 0 °C and nights drop to about −4 °C.
Can you swim in Seward, Alaska in December?
Only if you don't mind cold water: in December the sea averages just 6.5 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Seward, Alaska in December?
It rains often – on about 20 days, adding up to 340 mm.
Seward, Alaska month by month
The whole year in Seward, AlaskaAll destinations: USAWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences