Ketchikan Weather in August

August in Ketchikan typically sees daytime highs of 17°C (63°F) and nighttime lows of 13°C (55°F). August falls within the rainy season, so heavy rainfall is to be expected. It falls within the summer season.

Rainfall in Ketchikan in August

As part of the rainy season, Ketchikan sees around 15 days of rain in August, with an average of 249 mm (9.8 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Ketchikan in August

August in Ketchikan brings typical temperatures with highs around 17°C (63°F) and lows of 13°C (55°F). August is in the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions. On average, it sees the highest temps of the year.

Sunshine in Ketchikan in August

The area enjoys a balanced 147 hours of sunlight, ensuring it's neither too rainy nor too sunny.

If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit Ketchikan. Our weather planner can help you explore destinations with more pleasant weather conditions.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Ketchikan's climate page.

Ketchikan Temperature in August

Min Temperature 13°C (55°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 50%  

Precipitation 249 mm (9.8 in)  

Rainy days 15 days  

Humidity 81% *  

Sunshine 147 hours *  

Percentage Sunshine *  

* Data from: Annette Island, the United States of America (34 KM, 21 Miles).

What to Wear in Ketchikan in August

Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Ketchikan in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Ketchikan's climate page.

More climate data for Ketchikan

Temperature Rainfall Sunshine Humidity

See the full Ketchikan climate overview or explore weather in the United States of America.