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
August, recording an average high temperature of 53.2°F (11.8°C) and a low temperature of 49.6°F (9.8°C), is Unalaska's warmest month.Humidity
In Unalaska, the average relative humidity in August is 90%.Rainfall
In August, the rain falls for 17.8 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 198.8 rainfall days, and 33.78" (858mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Ocean temperature
With an average ocean temperature of 50.2°F (10.1°C), August is the month with the warmest seawater.Note: Diving into 50.2°F (10.1°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.
Daylight
In Unalaska, the average length of the day in August is 14h and 46min.On the first day of August, 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
The average sunshine in August is 5.5h.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in August, converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month in Unalaska?
What are the temperatures in August?
What is the average humidity in August in Unalaska?
How many days does it rain in August?
When it does not snow?
What month is the ocean warmest?
What is the ocean temperature in August?
What is the average length of the day in August?
When are sunrise and sunset in August?
How long on average sun shines in August in Unalaska?
When is the highest UV index?
What is the UV index reading in August?
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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