Ketchikan, Alaska weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Poor
Best time to visit: July – August
What is the weather like in Ketchikan, Alaska in January?
In January, Ketchikan, Alaska is cold: daytime highs average 4 °C, and nights cool down to about 1 °C. The sea averages 6.3 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Precipitation, often as snow, falls on about 21 days, totalling 306 mm. Snow falls on about 7 days. All in all, January is not an ideal month for a holiday in Ketchikan, Alaska.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 0 | 0 | 3 |
| Day | 4° | 4° | 4° |
| Night | 1° | 1° | 1° |
| Sea | 7° | 6° | 6° |
| Sun | 2 h | 2 h | 3 h |
| Rain days | 21 | 21 | 17 |
More details for January
- Daylight
- 7 h 41 min08:05 – 15:46
- UV index
- 0 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 81 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 7 days1 cm or more of fresh snowAll months
- Time zone
- UTC−9America/Sitka
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 January
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
Ketchikan, Alaska in January: quick answers
Is Ketchikan, Alaska hot in January?
No. In January, Ketchikan, Alaska is cold: daytime highs average 4 °C and nights drop to about 1 °C.
Can you swim in Ketchikan, Alaska in January?
Only if you don't mind cold water: in January the sea averages just 6.3 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Ketchikan, Alaska in January?
It rains often – on about 21 days, adding up to 306 mm.
Ketchikan, Alaska month by month
The whole year in Ketchikan, AlaskaAll destinations: USAWhere to go in JanuarySea temperature in January
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