August weather forecast
Alaska, USA

As the calendar flips to August, Alaska gradually begins its transition from the heart of summer to the whispers of autumn. Cities such as Sitka, positioned in the southeastern panhandle, can witness a mix of summer warmth and the initial hints of cooler autumn breezes.

When placed in context with July, August sees a noticeable reduction in daylight hours. While still extended, the sun doesn't linger as long on the horizon, hinting at the forthcoming change in seasons. Despite this, warmth remains a central feature of August, though temperatures tend to moderate slightly towards the end of the month.

Precipitation in August is noteworthy. The shift in season brings about increased rainfall, especially in regions like the Alaska Peninsula and Aleutian Islands. Rain showers can be frequent and sometimes heavy, a stark reminder of the state's proximity to vast oceanic bodies. Temperatures are in the average range of 42°F (5.6°C) to 58°F (14.4°C) statewide, with variations by altitude and region.

Rivers that were vigorous in the earlier summer months begin to stabilize, though they still maintain a good flow. August marks the tail end of the primary fishing season, with late salmon runs still providing ample opportunities for anglers.

Vegetation starts showing signs of the impending fall. While greenery remains dominant, the first hues of gold and red begin to appear, especially in deciduous forests. This mosaic of colors becomes more pronounced as August advances, making it a visually delightful period to explore Alaska's outdoors.

Wildlife activity remains high, but patterns start to change. Many species begin preparations for the colder months ahead, be it by accumulating fat or migrating to warmer regions. Observers can witness this natural spectacle, further emphasizing the dynamic interplay between Alaska's creatures and its environment. As August winds down, the state stands at the crossroads of seasons, with the crispness of fall waiting in the wings.

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• Anchorage - August »
  August is the month with the warmest seawater in Anchorage, with an average ocean temperature of 53.1°F (11.7°C). In Anchorage during August, the rain falls for 17.9 days and regularly aggregates up to 1.57" (40mm) of precipitation.
• Juneau - August »
  August is the month with the warmest seawater in Juneau, with an average ocean temperature of 53.4°F (11.9°C). In Juneau, in August, the average water temperature is 53.4°F (11.9°C).
• Fairbanks - August »
  The month with the most rainfall in Fairbanks is August, when the rain falls for 16.4 days and typically aggregates up to 2.44" (62mm) of precipitation. In Fairbanks, Alaska, in August, it is raining for 16.4 days, with typically 2.44" (62mm) of accumulated precipitation.
• Wasilla - August »
  In Wasilla, during August, the rain falls for 13.5 days and regularly aggregates up to 0.94" (24mm) of precipitation. Wasilla's average high-temperature marks a moderate 60.4°F (15.8°C) with the advent of August, closely mirroring that of the preceding month.
• Sitka - August »
  Sitka's August weather reaches an average high of 57.9°F (14.4°C) and an average low of 51.1°F (10.6°C), making it the warmest month. August, with average temperatures reaching a high of 57.9°F (14.4°C) and a low of 51.1°F (10.6°C), is the warmest month in Sitka.
• Ketchikan - August »
  The month with the warmest seawater in Ketchikan is August, with an average ocean temperature of 55.9°F (13.3°C). August is the month with the warmest seawater in Ketchikan, with an average ocean temperature of 55.9°F (13.3°C).
• Kenai - August »
  The month with the warmest seawater in Kenai is August, with an average ocean temperature of 53.4°F (11.9°C). In Kenai in August, during 15.8 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.
• Kodiak - August »
  With an average ocean temperature of 53.4°F (11.9°C), August is the month with the warmest seawater in Kodiak, Alaska. The month with the warmest seawater in Kodiak is August, with an average ocean temperature of 53.4°F (11.9°C).
• Bethel - August »
  The month with the most rainfall in Bethel is August, when the rain falls for 19.7 days and typically aggregates up to 2.09" (53mm) of precipitation. August is the month with the most rainfall in Bethel, Alaska.
• Palmer - August »
  On the first day of August in Palmer sunrise is at 5:28 am and sunset at 10:36 pm. In Palmer, in August, it is raining for 20.8 days, with typically 2.2" (56mm) of accumulated precipitation.
• Homer - August »
  Though retaining the warmth of the peak summer month, August in Homer presents a slight decrease in temperature and an increase in rainfall from the preceding month. August is the month with the warmest seawater in Homer, with an average ocean temperature of 53.6°F (12°C).
• Unalaska - August »
  August is the month with the warmest seawater in Unalaska, with an average ocean temperature of 50.2°F (10.1°C). August is the month with the warmest seawater in Unalaska, with an average ocean temperature of 50.2°F (10.1°C).