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 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
Copalis Beach experiences a transition to a moderate 57.6°F (14.2°C) in average high-temperatures with the arrival of May, not greatly differing from April's 52.3°F (11.3°C). During the nights in May, Copalis Beach observes an average low-temperature of 46.9°F (8.3°C).Humidity
The months with the lowest humidity are April through June, with an average relative humidity of 81%.Rainfall
In Copalis Beach, in May, during 11.5 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, there are 152.8 rainfall days, and 19.41" (493mm) of precipitation is accumulated.Snowfall
April through October and December are months without snowfall.Daylight
In Copalis Beach, the average length of the day in May is 15h and 6min.On the first day of the month, sunrise is at 5:59 am and sunset at 8:28 pm. On the last day of May, sunrise is at 5:25 am and sunset at 9:04 pm PDT.
Sunshine
The average sunshine in May is 8.2h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In May, the maximum UV index of 4 transforms into these recommendations:
Adopt protective measures - It is advised to guard against sun damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Copalis Beach in May?
What is the least humid month?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Copalis Beach have in May?
What is the month with the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Copalis Beach, WA
- Average high temperature in May: 57.6°F
The warmest month (with the highest average high temperature) is August (65.8°F).
The month with the lowest average high temperature is December (45.5°F).
- Average low temperature in May: 46.9°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (39.7°F).
Average pressure in May
Copalis Beach, WA
- Average pressure in May: 30.06"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in May
Copalis Beach, WA
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is September (7.1mph).
Average humidity in May
Copalis Beach, WA
- Average humidity in May: 81%
The month with the highest relative humidity is December (85%).
The months with the lowest relative humidity are April, May and June (81%).
Average rainfall in May
Copalis Beach, WA
- Average rainfall in May: 0.94"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in May
Copalis Beach, WA
- Average rainfall days in May: 11.5 days
The month with the highest number of rainy days is December (18.5 days).
The month with the least rainy days is July (5.6 days).
Average snowfall in May
Copalis Beach, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in May
Copalis Beach, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Copalis Beach, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Copalis Beach, WA
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is December (10.7 days).
Average UV index in May
Copalis Beach, WA
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Copalis Beach, WA
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Copalis Beach, WA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Copalis Beach, Washington, USA
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