May weather forecastCoupeville, WA
May
Weather in May
May, the last month of the spring in Coupeville, is a moderate month, with an average temperature fluctuating between 59°F (15°C) and 48°F (8.9°C).Temperature
May's arrival brings a modest temperature shift, moving from a fresh 52.3°F (11.3°C) in April to a moderate 59°F (15°C). Coupeville's average low-temperature in the month of May is recorded at a chilly 48°F (8.9°C).Humidity
In Coupeville, the average relative humidity in May is 78%.Rainfall
In Coupeville, in May, it is raining for 13.6 days, with typically 1.69" (43mm) of accumulated precipitation. Throughout the year, there are 183.8 rainfall days, and 24.45" (621mm) of precipitation is accumulated.Snowfall
In Coupeville, snow does not fall in May through October.Ocean temperature
In Coupeville, the average seawater temperature in May is 46.4°F (8°C).Note: Staying in 46.4°F (8°C) waters for just a few moments at 55.4°F (13°C) can be harrowing, and below 50°F (10°C) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
In May, the average length of the day in Coupeville is 15h and 14min.On the first day of May in Coupeville, sunrise is at 5:50 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 9:02 pm PDT.
Sunshine
In Coupeville, the average sunshine in May is 9.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 4 in May transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Coupeville, WA
- Average high temperature in May: 59°F
The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is February (37.9°F).
Average pressure in May
Coupeville, WA
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in May
Coupeville, WA
- Average wind speed in May: 5mph
The windiest month (with the highest average wind speed) is November (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in May
Coupeville, WA
- Average humidity in May: 78%
The months with the highest relative humidity are January, February and March (81%).
The month with the lowest relative humidity is July (76%).
Average rainfall in May
Coupeville, WA
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is November (3.46").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in May
Coupeville, WA
- Average rainfall days in May: 13.6 days
The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is August (7.5 days).
Average snowfall in May
Coupeville, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Coupeville, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Coupeville, WA
- Average sea temperature in May: 46.3°F
The best month for swimming (with the highest average sea temperature) is August (53°F).
The coldest month (with the lowest average sea temperature) is February (45°F).
Average daylight in May /
Average sunshine in May
Coupeville, WA
- Average daylight in May: 15h and 12min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 9h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in May
Coupeville, WA
- Average sunshine days in May: 15.6 days
The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in May
Coupeville, 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
Coupeville, WA
- Average cloud cover in May: 37
The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in May
Coupeville, 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).
