August weather forecastSitka, AK
August
Weather in August
The Sitka weather in August experiences minor changes from July. Albeit the temperatures may be similar, an increase in rainfall taking up to 6.18" (157mm) is noted. Daylight hours begin to reduce, signifying the shortening of summer days. Humidity and wind speeds remain fairly constant, maintaining a stable summer climate. Hence, August carries forward the tradition of a mild Alaskan summer with a slight increase in rainfall.Temperature
Sitka witnesses the warmest weather in August, with temperatures averaging a high of 57.9°F (14.4°C) and a low of 51.1°F (10.6°C).Humidity
The most humid month is August, with an average relative humidity of 89%.Rainfall
In Sitka, in August, it is raining for 21.8 days, with typically 6.18" (157mm) of accumulated precipitation. In Sitka, during the entire year, the rain falls for 243.6 days and collects up to 82.76" (2102mm) of precipitation.Snowfall
In Sitka, Alaska, snow does not fall in June through September.Daylight
The average length of the day in August is 15h and 7min.On the first day of August, sunrise is at 5:01 am and sunset at 9:13 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 7:59 pm AKDT.
Sunshine
In August, the average sunshine is 5.9h.UV index
In Sitka, Alaska, the average daily maximum UV index in August is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In August, the average maximum UV index of 3 translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sitka, AK
- Average high temperature in August: 57.9°F
The warmest month (with the highest average high temperature) is August (57.9°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in August: 51.1°F
The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is February (29.7°F).
Average pressure in August
Sitka, AK
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.72"Hg).
Average wind speed in August
Sitka, AK
- Average wind speed in August: 5.8mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in August
Sitka, AK
- Average humidity in August: 89%
The month with the highest relative humidity is August (89%).
The months with the lowest relative humidity are February and March (83%).
Average rainfall in August
Sitka, AK
- Average rainfall in August: 6.18"
The wettest month (with the highest rainfall) is November (10.16").
The driest month (with the least rainfall) is May (3.82").
Average rainfall days in August
Sitka, AK
- Average rainfall days in August: 21.8 days
The month with the highest number of rainy days is October (23.5 days).
The month with the least rainy days is February (14.6 days).
Average snowfall in August
Sitka, AK
- Average snowfall in August: 0"
The month with the highest snowfall is March (17.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Sitka, AK
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is March (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sitka, AK
- Average daylight in August: 15h and 6min
The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 48min).
- Average sunshine in August: 5h and 54min
The month with the most sunshine is May (Average sunshine: 6h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in August
Sitka, AK
- Average sunshine days in August: 7.4 days
The month with the most sunshine days is May (8.8 days).
The month with the least sunshine days is June (4.8 days).
Average UV index in August
Sitka, AK
- Average UV index in August: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in August
Sitka, AK
- Average cloud cover in August: 65
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are February, May and September (Cloud cover 60).
Average visibility in August
Sitka, AK
- Average visibility in August: 5mi
The months with the highest visibility are February, March, April, May, September, October, November and December (6mi).
The months with the lowest visibility are January, June, July and August (5mi).
