United StatesAverage weather for Ketchikan in August
It's pleasantly warm in August in Ketchikan with an average temperature of 19°C. Temperatures this month range from a low of 17°C to a high of 21°C. At night, you can expect temperatures between 11°C and 14°C.
Start of August
The month of August starts in Ketchikan with mild temps, averaging around 20°C during the day and nights around 14°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid August
By mid-August, daytime temps drop to around 19°C, with nights around 14°C. There’s a high chance of precipitation during this time.
End of August
By the end of August, the average daytime temperature in Ketchikan is around 18°C, while nighttime temps are about 13°C. There’s a significant chance of many days with precipitation.
Water temperature
The water temperature at Ketchikan is 16°C this month. This is probably too cold to swim without protective gear.
In August, there is an average of 306 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the South.
Ketchikan in August |
New York | ||
|---|---|---|---|
 Average temperature |
19°C | 30°C | |
 Max. temperature |
21°C | 31°C | |
| Min. temperature |
17°C | -5°C | |
 Total precipitation |
306 mm | 79 mm | |
| Rainy days |
15 days | 13 days | |
July
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is August a good time to visit Ketchikan?
Looking for sun? August isn’t a good month to be in Ketchikan. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 27°C in 2017, Ketchikan reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 12°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 6°C to a highest value of 18°C.
Check out the climate of Ketchikan for all months and discover the best travel time
Daily Temperature in August in Ketchikan
This chart shows the average daily high and low temperatures in August for Ketchikan, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in Ketchikan
The chart below shows the average daily precipitation in August for Ketchikan, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 15 days of precipitation in Ketchikan.
Daily UV index in August in Ketchikan
This chart shows the average daily UV index in August in Ketchikan, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Ketchikan over the years
This chart shows the average temperature in August in Ketchikan, measured in degrees Celsius, over the past few years.
Total precipitation in August in Ketchikan over the years
This chart shows the average precipitation in August in Ketchikan, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Ketchikan
Click on any day in August to get detailed info about the usual weather on that day in Ketchikan. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Ketchikan
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Average weather in Ketchikan by month
Click on a month below to see detailed weather info for Ketchikan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Ketchikan for all months at once
