Ketchikan, Alaska weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Poor
Best time to visit: July – August
What is the weather like in Ketchikan, Alaska in May?
In May, Ketchikan, Alaska is cool: daytime highs average 12 °C, and nights cool down to about 7 °C. The sea averages 9.2 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. It rains often – on about 16 days, adding up to 162 mm. All in all, May is not an ideal month for a holiday in Ketchikan, Alaska.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 16 h 8 min04:38 – 20:47
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 72 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−8America/Sitka
How the score comes together
- Temperatureweight 50 %41 %
- Sunshineweight 20 %68 %
- Few rainy daysweight 30 %12 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in May
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Ketchikan, Alaska in May: quick answers
Is Ketchikan, Alaska hot in May?
No. In May, Ketchikan, Alaska is cool: daytime highs average 12 °C and nights drop to about 7 °C.
Can you swim in Ketchikan, Alaska in May?
Only if you don't mind cold water: in May the sea averages just 9.2 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Ketchikan, Alaska in May?
It rains often – on about 16 days, adding up to 162 mm.
Ketchikan, Alaska month by month
The whole year in Ketchikan, AlaskaAll destinations: USAWhere to go in MaySea temperature in May
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