Juneau

Alaska Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Alaska, the United States of America in August.

Planning a trip to Alaska, the United States of America this August? Here's what you need to know about the weather:

What to Expect in Alaska in August

Alaska, the United States of America is a region in the United States of America. The weather in Alaska in August can be quite varied, with temperatures that range from cold to pleasant and precipitation levels ranging from moderate to heavy. August falls during the summer season.

Temperatures

The average highest temperatures fluctuate between cold in Denali National Park and Preserve at 6°C (43°F) to pleasant in North Pole at 20°C (68°F). Nighttime temperatures generally drop to 10°C (50°F) in North Pole and 0°C (32°F) in Denali National Park and Preserve.

To learn more about the conditions in specific areas of Alaska, the United States of America, check out the map below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Point Barrow with an average of 39 mm (1.5 in) to heavy rainfall in Glacier Bay National Park and Preserve with 317 mm (12 in).

Average sunshine

Most destinations offer generous amounts of sunshine this August. For example, Anchorage gets approximately 204 hours of sunlight, perfect for anyone wanting bright, sunny days.

Explore Alaska by month

Pick a month to see the average temperature, rainfall and sunshine in Alaska — and find the best time to visit. (based on Anchorage)

Best Places to Visit in Alaska in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Alaska.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Alaska

What is the weather like in August for some of the most popular destinations in Alaska, the United States of America?

Temperature range in Alaska (August)

Precipitation variation in Alaska (August)

Anchorage

In August Anchorage generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 12°C (54°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
18°C (64°F)
17°C (63°F)
13°C (55°F)
Min temperature
12°C (54°F)
12°C (54°F)
8°C (46°F)
Monthly sun hours
250 hours
204 hours
160 hours
Monthly rainfall
80 mm (3.1 in)
111 mm (4.4 in)
131 mm (5.2 in)
Monthly rainy days
12 days
14 days
14 days
Weather conditions

Fairbanks

In August Fairbanks generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 10°C (50°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

July
August
September
Max temperature
23°C (73°F)
19°C (66°F)
13°C (55°F)
Min temperature
13°C (55°F)
10°C (50°F)
4°C (39°F)
Monthly sun hours
274 hours
166 hours
122 hours
Monthly rainfall
75 mm (3 in)
73 mm (2.9 in)
49 mm (1.9 in)
Monthly rainy days
13 days
13 days
10 days
Weather conditions

Juneau

In August Juneau generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 8°C (46°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
14°C (57°F)
14°C (57°F)
11°C (52°F)
Min temperature
8°C (46°F)
8°C (46°F)
5°C (41°F)
Monthly sun hours
163 hours
161 hours
112 hours
Monthly rainfall
181 mm (7.1 in)
249 mm (9.8 in)
368 mm (14 in)
Monthly rainy days
15 days
16 days
19 days
Weather conditions

Kenai

In August Kenai generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 12°C (54°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
17°C (63°F)
17°C (63°F)
14°C (57°F)
Min temperature
12°C (54°F)
12°C (54°F)
9°C (48°F)
Monthly rainfall
73 mm (2.9 in)
106 mm (4.2 in)
140 mm (5.5 in)
Monthly rainy days
12 days
14 days
15 days
Weather conditions

Soldotna

In August Soldotna generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
19°C (66°F)
18°C (64°F)
14°C (57°F)
Min temperature
12°C (54°F)
11°C (52°F)
8°C (46°F)
Monthly rainfall
78 mm (3.1 in)
104 mm (4.1 in)
130 mm (5.1 in)
Monthly rainy days
12 days
14 days
15 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Alaska, in the United States of America.

Popular cities in August

Day & night temperatures, rainfall and average weather in Alaska in August.

City Weather Day temp Night temp Rainfall
Anchorage 17°C (63°F) 12°C (54°F) 111 mm (4.4 in)
Fairbanks 19°C (66°F) 10°C (50°F) 73 mm (2.9 in)
Juneau 14°C (57°F) 8°C (46°F) 249 mm (9.8 in)
Kenai 17°C (63°F) 12°C (54°F) 106 mm (4.2 in)
Soldotna 18°C (64°F) 11°C (52°F) 104 mm (4.1 in)
Ketchikan 17°C (63°F) 13°C (55°F) 249 mm (9.8 in)

Alaska weather in August: frequently asked questions

What is the weather like in Alaska, the United States of America in August?

Expect unpleasant weather across Alaska, the United States of America in August. The popular destination of Anchorage averages 17°C (63°F) by day and 12°C (54°F) at night during this summer month.

What is the average temperature in Alaska, the United States of America in August?

Anchorage averages a daytime maximum of 17°C (63°F) in August, with overnight lows close to 12°C (54°F).

Does Alaska, the United States of America get a lot of rain in August?

Alaska, the United States of America sees substantial rainfall in August. Anchorage typically averages about 111 mm (4.4 in), a mix of wet and dry days, but bring an umbrella.

Is August a Good Time to Visit Alaska, the United States of America?

Given the typically unpleasant weather conditions in Anchorage, August may not be the ideal time to visit Alaska, the United States of America.

Generally speaking, the best visiting conditions can be found in July offering mostly pleasant weather in Anchorage. The weather in January, February, March, April, September, October, November and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Alaska.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.