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Loading Travel Forecast…Loading Travel Forecast…Loading Travel Forecast…Historical averages and packing recommendations for your August visit to Ketchikan.
"Still warm, very popular"
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Averaged from the last five years of August readings — a guide to what to expect, not a forecast for a particular sailing.
Ketchikan is Alaska's southernmost cruise port and often the first stop on an Inside Passage sailing. The town sits on Revillagigedo Island, known for its salmon runs, its totem pole collections, and the surrounding Tongass National Forest. Creek Street, a boardwalk raised on pilings over a salmon stream, runs through the old part of town.
Ketchikan in August offers pleasant temperatures, with highs around 66°F and comfortable lows near 53°F. August sees roughly 18 rainy days, so waterproof layers and flexible plans are wise. Showers are often short-lived but can be intense. Still warm, very popular
This is one of the most popular months to visit Ketchikan, so book shore excursions early. The top snorkeling spots and tours sell out fast. Lightweight layers work well: a light cardigan for evenings on deck and breathable tops for port days cover most conditions.
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The average high temperature in Ketchikan during August is 66°F, with a low of 53°F.
Ketchikan typically sees 18 days of rain in August. Still warm, very popular
For a August cruise to Ketchikan, you should pack layers, a light jacket, and comfortable walking shoes.