August weather forecastPort Heiden, AK
August
Weather in August
The last month of the summer, August, is another mild month in Port Heiden, Alaska, with an average temperature ranging between max 56.8°F (13.8°C) and min 49.1°F (9.5°C).Temperature
The warmest time of the year is August, with temperatures averaging a high of 56.8°F (13.8°C) and a low of 49.1°F (9.5°C).Humidity
In Port Heiden, the average relative humidity in August is 86%.Rainfall
In August, the rain falls for 17.5 days. Throughout August, 1.46" (37mm) of precipitation is accumulated. In Port Heiden, during the entire year, the rain falls for 160.7 days and collects up to 16.57" (421mm) of precipitation.Snowfall
June through August are months without snowfall.Daylight
The average length of the day in August is 15h and 7min.On the first day of the month, sunrise is at 6:35 am and sunset at 10:45 pm. On the last day of August, sunrise is at 7:36 am and sunset at 9:32 pm AKDT.
Sunshine
In Port Heiden, the average sunshine in August is 5.6h.UV index
May through September, with an average maximum UV index of 3, are months with the highest UV index in Port Heiden. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In August, an average UV index of 3 transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Port Heiden, AK
- Average high temperature in August: 56.8°F
The warmest month (with the highest average high temperature) is August (56.8°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in August: 49.1°F
The month with the highest average low temperature is August (49.1°F).
The coldest months (with the lowest average low temperature) are January and March (23.4°F).
Average pressure in August
Port Heiden, AK
- Average pressure in August: 29.87"Hg
The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is December (29.54"Hg).
Average wind speed in August
Port Heiden, AK
- Average wind speed in August: 10.7mph
The windiest month (with the highest average wind speed) is December (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in August
Port Heiden, AK
- Average humidity in August: 86%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).
Average rainfall in August
Port Heiden, AK
- Average rainfall in August: 1.46"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is June (0.83").
Average rainfall days in August
Port Heiden, AK
- Average rainfall days in August: 17.5 days
The month with the highest number of rainy days is September (19.2 days).
The month with the least rainy days is March (7.6 days).
Average snowfall in August
Port Heiden, AK
- Average snowfall in August: 0"
The month with the highest snowfall is December (5.71").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Port Heiden, AK
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Port Heiden, 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 54min).
- Average sunshine in August: 5h and 36min
The month with the most sunshine is May (Average sunshine: 7h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in August
Port Heiden, AK
- Average sunshine days in August: 10 days
The month with the most sunshine days is May (13 days).
The month with the least sunshine days is November (6 days).
Average UV index in August
Port Heiden, AK
- Average UV index in August: 3
The months with the highest UV index are May, June, July, August and September (UV index 3).
The months with the lowest UV index are February, March, November and December (UV index 1).
Average cloud cover in August
Port Heiden, AK
- Average cloud cover in August: 67
The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 59).
Average visibility in August
Port Heiden, AK
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
