August weather forecast and climate
Anchorage, AK

Wintertime in Anchorage, Alaska with mountains blanketed in snow
Wintertime in Anchorage, Alaska with mountains blanketed in snow

What is the temperature in August in Anchorage?

The average high-temperature, in August, is 63.5°F (17.5°C), while the average low-temperature is 49.3°F (9.6°C).

How many days does it rain in August in Anchorage?

In Anchorage, in August, it is raining for 13.8 days, with typically 3.3" (82.6mm) of accumulated precipitation.

What is the rainiest month in Anchorage?

August is the month with the most rainfall. Rain falls for 13.8 days and accumulates 3.3" (82.6mm) of precipitation.

Does it snow in Anchorage in August?

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

What is the month with the warmest sea water in Anchorage?

Month with the warmest seawater in Anchorage, Alaska, is August, with an average sea temperature of 53.1°F (11.7°C). Swimming in 53.1°F (11.7°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the sea water temperature in August in Anchorage?

In Anchorage, Alaska, in August, the average water temperature is 53.1°F (11.7°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.
Average temperature in August - Anchorage, AK
  • Average high temperature in August: 17.5°C

The warmest month (with the highest average high temperature) is July (18.6°C).
The month with the lowest average high temperature is January (-5.2°C).

  • Average low temperature in August: 9.6°C

The month with the highest average low temperature is July (10.7°C).
The coldest month (with the lowest average low temperature) is January (-11.4°C).

Average humidity in August - Anchorage, AK
  • Average humidity in August: 75.1%

Months with the highest relative humidity are November and December (77.1%).
The month with the lowest relative humidity is May (61.6%).

Average rainfall in August - Anchorage, AK
  • Average rainfall in August: 82.6mm

The wettest month (with the highest rainfall) is August (82.6mm).
The driest month (with the lowest rainfall) is April (11.9mm).

Average rainfall days in August - Anchorage, AK
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is September (14.5 days).
The month with the lowest number of rainy days is April (5.5 days).

Average snowfall in August - Anchorage, AK
  • Average snowfall in August: 0mm

The month with the highest snowfall is December (520.7mm).
Months with the lowest snowfall are June, July and August (0mm).

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 (10.5 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average sea temperature in August - Anchorage, AK
  • Average sea temperature in August: 11.7°C

The best month for swimming (with the highest average sea temperature) is August (11.7°C).
The coldest month (with the lowest average sea temperature) is February (2.1°C).

Average daylight in August / Average sunshine in August - Anchorage, AK
  • Average daylight in August: 15.7h

The month with the longest days is June (Average daylight: 19.2h).
The month with shortest days is December (Average daylight: 5.6h).

  • Average sunshine in August: 6.6h

The month with most sunshine is May (Average sunshine: 9.3h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in August - Anchorage, AK
  • Average UV index in August: 4

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 0).

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