Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
A slight uplift of average high-temperatures is noted in May, with temperatures adjusting from a fresh 52.2°F (11.2°C) in April to a refreshing 57.7°F (14.3°C). Friday Harbor sees a minor drop to an average minimum temperature of 50.9°F (10.5°C) during the night in the month of May.Humidity
In May, the average relative humidity in Friday Harbor is 77%.Rainfall
In Friday Harbor, in May, during 12.3 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 167.7 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Ocean temperature
In Friday Harbor, the average seawater temperature in May is 46.2°F (7.9°C).Note: It is advised against swimming in 46.2°F (7.9°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
In May, the average length of the day is 15h and 16min.On the first day of May, sunrise is at 5:50 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 9:05 pm PDT.
Sunshine
In Friday Harbor, the average sunshine in May is 9.6h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What is the average May temperature in Friday Harbor?
What is the average humidity in May in Friday Harbor?
How much does it rain in Friday Harbor in May?
When it does not snow in Friday Harbor?
How cold is the water in May in Friday Harbor?
What is the average length of the day in May in Friday Harbor?
What time are sunrise and sunset in May in Friday Harbor?
How many hours of sunshine does Friday Harbor have in May?
What is the UV index intensity in May in Friday Harbor?
Average temperature in May
Friday Harbor, WA
- Average high temperature in May: 57.7°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 May: 50.9°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 May
Friday Harbor, WA
- Average pressure in May: 30.03"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 May
Friday Harbor, WA
- Average wind speed in May: 6.2mph
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 May
Friday Harbor, WA
- Average humidity in May: 77%
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 May
Friday Harbor, WA
- Average rainfall in May: 1.34"
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 May
Friday Harbor, WA
- Average rainfall days in May: 12.3 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 May
Friday Harbor, WA
- Average snowfall in May: 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 May
Friday Harbor, WA
- Average snowfall days in May: 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 May
Friday Harbor, WA
- Average sea temperature in May: 46.2°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 May /
Average sunshine in May
Friday Harbor, WA
- Average daylight in May: 15h 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 May: 9h and 4min
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 May
Friday Harbor, WA
- Average sunshine days in May: 17.1 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 May
Friday Harbor, WA
- Average UV index in May: 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 May
Friday Harbor, WA
- Average cloud cover in May: 37
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 May
Friday Harbor, WA
- Average visibility in May: 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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