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%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
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.
Precipitation
Rainy days
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Chance of sun
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.
| 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 | ||||||||