August weather - Summer 2024

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

Wintertime in Anchorage, Alaska with mountains blanketed in snow

Weather in August

August manifests a change in Anchorage's weather, signaling the gradual retreat of the intense summer heat. The city witnesses a dip in temperature compared to July but still hovers within the comfortable range. As August progresses, the hours of daylight start to reduce, indicating the approach of autumn. Despite a higher amount of rainfall, visibility remains excellent, allowing locals and tourists to enjoy the city and its surroundings. As mild winds begin to blow, they carry the first hints of the upcoming fall season.

Temperature

August's arrival brings an average high-temperature of a still refreshing 59.5°F (15.3°C), slightly deviating from July's 61.9°F (16.6°C). In Anchorage, August nights witness a steady temperature drop to a cool 50°F (10°C).

Humidity

In Anchorage, the average relative humidity in August is 78%.

Rainfall

In Anchorage, during August, the rain falls for 17.9 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 139.9 rainfall days, and 12.6" (320mm) of precipitation is accumulated.

Snowfall

June through August are months without snowfall.

Ocean temperature

With an average ocean temperature of 53.1°F (11.7°C), August is the month with the warmest seawater.
Note: Immersing oneself in 53.1°F (11.7°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.

Daylight

In Anchorage, the average length of the day in August is 15h and 43min.
On the first day of August, sunrise is at 5:34 am and sunset at 10:37 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 9:07 pm AKDT.

Sunshine

The average sunshine in August in Anchorage is 9.9h.

UV index

In Anchorage, the average daily maximum UV index in August is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 3 in August transforms into this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Updated: Jul 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Anchorage in August?

During August, Anchorage experiences an average high-temperature of 59.5°F (15.3°C) and a low-temperature of 50°F (10°C).

What is the average humidity in August?

In August, the average relative humidity in Anchorage is 78%.

How much does it rain in August?

In Anchorage, during August, the rain falls for 17.9 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow?

June through August are months without snowfall.

Does it snow in Anchorage in August?

In Anchorage, in August, it doesn't snow. In September, it regularly snows.

When is the ocean warmest?

August is the month with the warmest seawater, with an average ocean temperature of 53.1°F (11.7°C).

What is the water temperature in August?

In August, the average ocean temperature is 53.1°F (11.7°C). Swimming in 53.1°F (11.7°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Anchorage have in August?

In Anchorage, the average day length in August is 15h and 43min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:34 am and sunset at 10:37 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 9:07 pm AKDT.

How long on average sun shines in August?

The average sunshine duration in August in Anchorage is 9.9h.

How high is the UV index in August?

In August, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J August S O N D

Jul

August

Sep

Average high temperature

61.9°F 16.6°C

59.5°F 15.3°C

52.7°F 11.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.9mph 7.9km/h

5.1mph 8.2km/h

5.5mph 8.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

14.2

11.4

11.1

Average UV index

Average cloud cover

Average visibility

Average temperature in August
Anchorage, AK

Average high temperature in August: 59.5°F

The warmest month (with the highest average high temperature) is July (61.9°F).
The month with the lowest average high temperature is January (20.3°F).

Average low temperature in August: 50°F

The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

Average pressure in August
Anchorage, AK

Average pressure in August: 29.86"Hg

The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.67"Hg).

Average wind speed in August
Anchorage, AK

Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is November (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

Average humidity in August
Anchorage, AK

Average humidity in August: 78%

The months with the highest relative humidity are January, February and March (86%).
The month with the lowest relative humidity is May (68%).

Average rainfall in August
Anchorage, AK

Average rainfall in August: 1.57"

The wettest month (with the highest rainfall) is September (1.93").
The driest month (with the least rainfall) is May (0.55").

Average rainfall days in August
Anchorage, AK

Average rainfall days in August: 17.9 days

The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is February (7 days).

Average snowfall in August
Anchorage, AK

Average snowfall in August: 0"

The month with the highest snowfall is December (5.51").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Anchorage, AK

Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (11.6 days).
The months with the least snowfall days are June, July and August (0 days).

Average sea temperature in August
Anchorage, AK

Average sea temperature in August: 53.1°F

The best month for swimming (with the highest average sea temperature) is August (53.1°F).
The coldest month (with the lowest average sea temperature) is February (35.8°F).

Average daylight in August /
Average sunshine in August
Anchorage, AK

Average daylight in August: 15h and 4min

The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 36min).

Average sunshine in August: 9h and 5min

The months with the most sunshine are May and June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).

Average sunshine days in August
Anchorage, AK

Average sunshine days in August: 11.4 days

The month with the most sunshine days is January (16.9 days).
The month with the least sunshine days is September (11.1 days).

Average UV index in August
Anchorage, AK

Average UV index in August: 3

The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in August
Anchorage, AK

Average cloud cover in August: 45

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is May (Cloud cover 38).

Average visibility in August
Anchorage, AK

Average visibility in August: 6mi

The months with the highest visibility are January, February, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is March (5mi).

August weather forecast
Anchorage, AK

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