April weather forecastCoupeville, WA
April
Weather in April
April in Coupeville, Washington, is a cool spring month, with an average temperature fluctuating between 52.3°F (11.3°C) and 43.7°F (6.5°C).Temperature
Coupeville, Washington, records an average high-temperature of a cool 52.3°F (11.3°C) as April arrives, nearly mirroring the previous month's climate. Coupeville observes an average low-temperature of 43.7°F (6.5°C) during the slightly cooler nights of April.Humidity
The average relative humidity in April is 79%.Rainfall
In April, the rain falls for 17.8 days. Throughout April, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 183.8 rainfall days, and 24.45" (621mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 0.2 snowfall days, in April, Coupeville aggregates 0.04" (1mm) of snow. In Coupeville, during the entire year, snow falls for 9.6 days and aggregates up to 5.63" (143mm) of snow.Ocean temperature
January, February and April, with an average ocean temperature of 45.1°F (7.3°C), are months with the coldest seawater.Note: It is life-risking to swim in 45.1°F (7.3°C). Briefly staying in 55.4°F (13°C) waters feels unsettling, and temperatures below 50°F (10°C) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
The average length of the day in April is 13h and 43min.On the first day of April, sunrise is at 6:46 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:23 pm PDT.
Sunshine
In Coupeville, Washington, the average sunshine in April is 8.5h.UV index
In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 3 in April translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Coupeville, WA
- Average high temperature in April: 52.3°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 April: 43.7°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 April
Coupeville, WA
- Average pressure in April: 30.04"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 April
Coupeville, WA
- Average wind speed in April: 6.5mph
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 April
Coupeville, WA
- Average humidity in April: 79%
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 April
Coupeville, WA
- Average rainfall in April: 2.01"
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 April
Coupeville, WA
- Average rainfall days in April: 17.8 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 April
Coupeville, WA
- Average snowfall in April: 0.04"
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 April
Coupeville, WA
- Average snowfall days in April: 0.2 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 April
Coupeville, WA
- Average sea temperature in April: 45.1°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 April /
Average sunshine in April
Coupeville, WA
- Average daylight in April: 13h and 42min
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 April: 8h and 30min
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 April
Coupeville, WA
- Average sunshine days in April: 9.7 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 April
Coupeville, WA
- Average UV index in April: 3
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
Coupeville, WA
- Average cloud cover in April: 46
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 April
Coupeville, 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).
