August · Alaska
Best time to visit Ketchikan in August Weather, crowds & prices
Weather in Ketchikan in August
Average temperature 15°C, 156 mm of rain, about 14 days with 6+ hours of sunshine and 86% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
6.7/10
Ranked #3 of 12 months
- Avg temp
- 15°C
- Rainfall
- 156 mm
- Humidity
- 86%
- Days with 6h+ sun
- 14
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Ketchikan scores 6.7/10 for nature and wildlife travel - one of the top 12-month picks (#3). Expect around 15°C, 156 mm of rain, and roughly 14 days with 6+ hours of sunshine this month.
Ketchikan stacks totem poles and fishing docks along the Inside Passage, with Misty Fjords floatplane trips nearby.
August in Ketchikan: mixed conditions, plan around the weather
August averages 15°C (60°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 156 mm this is a genuinely wet month: about 14 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 6.7/10 here, 3rd of 12 months, against 7.4/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Ketchikan in August?
- In August, Ketchikan averages 15°C, 156 mm of rain, and about 14 days with 6+ hours of sunshine. Its climate-comfort score is 6.7/10.
- Is August a good time to visit Ketchikan?
- August earns a 6.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Ketchikan in August?
- Expect about 156 mm of rain in August. Average humidity is 86% and there are about 14 days with 6+ hours of sunshine.
Curated in Ketchikan
Tickets & experiences
Things to do in Ketchikan
Ketchikan, Alaska. Live activities and tours from GetYourGuide, matched to this destination.