Ketchikan Weather in September

September in Ketchikan brings moderate temperatures, with daytime highs of 14°C (57°F) and nights around 11°C (52°F). It's part of the rainy season, with 367 mm (14 in) of rainfall on average, so an umbrella or poncho is a good idea.

Rainfall in Ketchikan in September

As part of the rainy season, Ketchikan sees around 18 days of rain in September, with an average of 367 mm (14 in). The rain this month falls heavily when it arrives, so waterproofs are worth keeping handy.

Temperature in Ketchikan in September

Daytime temperatures in Ketchikan reach 14°C (57°F) in September, dropping to 11°C (52°F) at night. September is part of the summer season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights cool down to 11°C (52°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.

Sunshine in Ketchikan in September

The area enjoys a moderate level of sunlight, with around 111 hours. It's a good balance between sunny and rainy days.

September in Ketchikan has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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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 September

Min Temperature 11°C (52°F)  

Max Temperature 14°C (57°F)  

Chance of Rain 59%  

Precipitation 367 mm (14 in)  

Rainy days 18 days  

Humidity 82% *  

Sunshine 111 hours *  

Percentage Sunshine *  

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

What to Wear in Ketchikan in September

Pack for changing conditions in Ketchikan in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Ketchikan in September

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.