Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August's presence marks an average high-temperature of a still refreshing 64.4°F (18°C), subtly varied from July's 64.9°F (18.3°C). During the August nights, Friday Harbor's temperature maintains an average close to the daytime highs, settling at a moderate 57.7°F (14.3°C).Humidity
The months with the highest humidity are January, August and September, with an average relative humidity of 79%.Rainfall
In Friday Harbor, in August, it is raining for 5.3 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, in Friday Harbor, Washington, there are 167.7 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
In Friday Harbor, Washington, snow does not fall in April through October.Ocean temperature
The months with the warmest seawater are August and September, with an average ocean temperature of 52.3°F (11.3°C).Note: Dipping into 52.3°F (11.3°C) below 50°F (10°C) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 55.4°F (13°C) feels cold to the bone.
Daylight
In Friday Harbor, the average length of the day in August is 14h and 17min.On the first day of August, sunrise is at 5:47 am and sunset at 8:48 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:55 pm PDT.
Sunshine
The average sunshine in August is 10.8h.UV index
In August, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in August converts into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the temperature in August in Friday Harbor?
What is the most humid month in Friday Harbor?
What is the average humidity in August in Friday Harbor?
How much does it rain in Friday Harbor in August?
When it does not snow in Friday Harbor?
When is the ocean warmest in Friday Harbor?
How cold is the water in August in Friday Harbor?
How many hours of daylight does Friday Harbor have in August?
What time are sunrise and sunset in August in Friday Harbor?
How many hours of sunshine does Friday Harbor have in August?
How high is the UV index in August in Friday Harbor?
Average temperature in August
Friday Harbor, WA
- Average high temperature in August: 64.4°F
The warmest month (with the highest average high temperature) is July (64.9°F).
The months with the lowest average high temperature are January, February and December (45.3°F).
- Average low temperature in August: 57.7°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure in August
Friday Harbor, WA
- Average pressure in August: 30.02"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in August
Friday Harbor, WA
- Average wind speed in August: 4.9mph
The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in August
Friday Harbor, WA
- Average humidity in August: 79%
The months with the highest relative humidity are January, August and September (79%).
The month with the lowest relative humidity is April (76%).
Average rainfall in August
Friday Harbor, WA
- Average rainfall in August: 0.71"
The wettest month (with the highest rainfall) is November (3.43").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in August
Friday Harbor, WA
- Average rainfall days in August: 5.3 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in August
Friday Harbor, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Friday Harbor, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in August
Friday Harbor, WA
- Average sea temperature in August: 52.3°F
The best months for swimming (with the highest average sea temperature) are August and September (52.3°F).
The coldest month (with the lowest average sea temperature) is February (44.9°F).
Average daylight in August /
Average sunshine in August
Friday Harbor, WA
- Average daylight in August: 14h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in August: 10h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in August
Friday Harbor, WA
- Average sunshine days in August: 24.7 days
The month with the most sunshine days is August (24.7 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in August
Friday Harbor, WA
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Friday Harbor, WA
- Average cloud cover in August: 23
The months with the most cloud cover are February and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in August
Friday Harbor, WA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Friday Harbor, Washington, USA
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