August Weather in Unalaska

Last updated: March 2, 2024

The weather in Unalaska, United States, during August is characterized by an average temperature of 11°C (51°F). Highs can soar to 17°C (63°F), while lows may dip to 6°C (43°F). Typically, the humidity level in Unalaska throughout August hovers around 92%.

6°C (43°F)

Minimum temperature

11°C (51°F)

Average temperature

17°C (63°F)

Maximum temperature

92%

Humidity

Precipitation and Sunshine hours

In August, Unalaska averages 89 mm (3.5 inches) of rainfall, typically over the course of 16 rainy days. The month enjoys an average of 14 hours 42 minutes of daylight, with the sun shining for approximately 6 hours 20 minutes each day. Additionally, there is a 13% probability of sunny days during this period.

89 mm (3.5 inches)

Precipitation

16 rainy days

Rainy days

6 hours 20 minutes

Sunshine hours

13%

Chance of sun

UV Index

In August, the UV Index in Unalaska reaches a maximum of 8, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 14:00 and 16:00, during which unprotected skin may burn in as little as 15 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	0	1	1	2	3	5	6	8	8	7	6	5	3
Exposure	Low				Moderate		High	VeryHigh		High		Moderate
Time to burn	45 min				30 min		25 min	15 min		25 min		30 min