April weather forecastFriday Harbor, WA
April
Weather in April
April in Friday Harbor, Washington, is a fresh spring month, with an average temperature fluctuating between 46.2°F (7.9°C) and 52.2°F (11.2°C).Temperature
As March turns into April, the average high-temperatures rest at a fresh 52.2°F (11.2°C), showing a minor variation from the prior month. Friday Harbor, during the nights of April, averages a temperature close to its daytime high, at a frosty 46.2°F (7.9°C).Humidity
The least humid month is April, with an average relative humidity of 76%.Rainfall
In Friday Harbor, in April, it is raining for 16.3 days, with typically 1.69" (43mm) of accumulated precipitation. In Friday Harbor, during the entire year, the rain falls for 167.7 days and collects up to 23.46" (596mm) of precipitation.Snowfall
In Friday Harbor, snow does not fall in April through October.Ocean temperature
In April, the average ocean temperature is 45.1°F (7.3°C).Note: Swimming at temperatures less than 50°F (10°C) in 45.1°F (7.3°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.
Daylight
In April, the average length of the day is 13h and 44min.On the first day of April, sunrise is at 6:47 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:25 pm PDT.
Sunshine
In April, the average sunshine is 8.4h.UV index
The average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 4 in April converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Friday Harbor, WA
- Average high temperature in April: 52.2°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 April: 46.2°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 April
Friday Harbor, WA
- Average pressure in April: 30.04"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 April
Friday Harbor, WA
- Average wind speed in April: 8.5mph
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 April
Friday Harbor, WA
- Average humidity in April: 76%
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 April
Friday Harbor, WA
- Average rainfall in April: 1.69"
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 April
Friday Harbor, WA
- Average rainfall days in April: 16.3 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 April
Friday Harbor, WA
- Average snowfall in April: 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 April
Friday Harbor, WA
- Average snowfall days in April: 0.2 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 April
Friday Harbor, WA
- Average sea temperature in April: 45.2°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 April /
Average sunshine in April
Friday Harbor, WA
- Average daylight in April: 13h and 42min
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 April: 8h and 24min
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 April
Friday Harbor, WA
- Average sunshine days in April: 11.4 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 April
Friday Harbor, WA
- Average UV index in April: 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 April
Friday Harbor, WA
- Average cloud cover in April: 47
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 April
Friday Harbor, WA
- Average visibility in April: 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).
