Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
With its high average temperature of 53.2°F (11.8°C) and a low of 49.6°F (9.8°C), August is regarded as the warmest month.Humidity
In Unalaska, Alaska, the average relative humidity in August is 90%.Rainfall
In August, in Unalaska, the rain falls for 17.8 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. In Unalaska, Alaska, during the entire year, the rain falls for 198.8 days and collects up to 33.78" (858mm) of precipitation.Snowfall
June through September are months without snowfall.Ocean temperature
August is the month with the warmest seawater in Unalaska, with an average ocean temperature of 50.2°F (10.1°C).Note: Dipping in 50.2°F (10.1°C) at temperatures less than 50°F (10°C) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
In Unalaska, the average length of the day in August is 14h and 46min.On the first day of August in Unalaska, sunrise is at 7:21 am and sunset at 11:02 pm. On the last day of the month, sunrise is at 8:14 am and sunset at 9:57 pm AKDT.
Sunshine
In August, the average sunshine in Unalaska is 5.5h.UV index
July and August, with an average maximum UV index of 3, are months with the highest UV index in Unalaska. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In August, a regular UV index of 3 translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What part of the year is the hottest in Unalaska?
What is the usual temperature for Unalaska in August?
What is the average humidity in August in Unalaska?
How many days does it rain in August in Unalaska?
When it does not snow in Unalaska?
What is the month with the warmest ocean in Unalaska?
How cold is the water in August in Unalaska?
How many hours of daylight does Unalaska have in August?
What time are sunrise and sunset in August in Unalaska?
How long on average sun shines in August in Unalaska?
What is the month with the highest UV index in Unalaska?
How high is the UV index in August in Unalaska?
Average temperature in August
Unalaska, AK
- Average high temperature in August: 53.2°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is March (34.7°F).
- Average low temperature in August: 49.6°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is March (30.7°F).
Average pressure in August
Unalaska, AK
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is January (29.5"Hg).
Average wind speed in August
Unalaska, AK
- Average wind speed in August: 9.6mph
The windiest months (with the highest average wind speed) are November and December (16.5mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in August
Unalaska, AK
- Average humidity in August: 90%
The month with the highest relative humidity is July (91%).
The months with the lowest relative humidity are November and December (80%).
Average rainfall in August
Unalaska, AK
- Average rainfall in August: 2.56"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in August
Unalaska, AK
- Average rainfall days in August: 17.8 days
The month with the highest number of rainy days is October (21.8 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in August
Unalaska, AK
- Average snowfall in August: 0"
The month with the highest snowfall is January (6.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Unalaska, AK
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Unalaska, AK
- Average sea temperature in August: 50.1°F
The best month for swimming (with the highest average sea temperature) is August (50.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in August /
Average sunshine in August
Unalaska, AK
- Average daylight in August: 14h and 5min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in August: 5h and 3min
The month with the most sunshine is June (Average sunshine: 5h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in August
Unalaska, AK
- Average sunshine days in August: 9.7 days
The month with the most sunshine days is August (9.7 days).
The month with the least sunshine days is April (3.8 days).
Average UV index in August
Unalaska, AK
- Average UV index in August: 3
The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are February, March, April and November (UV index 1).
Average cloud cover in August
Unalaska, AK
- Average cloud cover in August: 67
The month with the most cloud cover is July (Cloud cover 74).
The months with the least cloud cover are September and October (Cloud cover 66).
Average visibility in August
Unalaska, AK
- Average visibility in August: 6mi
The months with the highest visibility are May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, July and December (5mi).
Unalaska, Alaska, USA
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