August Weather in Ketchikan

Last updated: March 2, 2024

The weather in Ketchikan, United States, during August is characterized by an average temperature of 14°C (58°F). Highs can soar to 21°C (69°F), while lows may dip to 11°C (52°F). Typically, the humidity level in Ketchikan throughout August hovers around 92%.

11°C (52°F)

Minimum temperature

14°C (58°F)

Average temperature

21°C (69°F)

Maximum temperature

92%

Humidity

Precipitation and Sunshine hours

In August, Ketchikan averages 302 mm (11.9 inches) of rainfall, typically over the course of 17 rainy days. The month enjoys an average of 14 hours 51 minutes of daylight, with the sun shining for approximately 7 hours 13 minutes each day. Additionally, there is a 31% probability of sunny days during this period.

302 mm (11.9 inches)

Precipitation

17 rainy days

Rainy days

7 hours 13 minutes

Sunshine hours

31%

Chance of sun

UV Index

In August, the UV Index in Ketchikan reaches a maximum of 7, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 3 4 6 7 7 6 5 4 2 1 1
Exposure Low Moderate High Moderate Low
Time to burn 45 min 30 min 25 min 30 min 45 min

Compare Ketchikan's Climate with Cities Worldwide