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
May introduces a minor temperature shift, with average high-temperatures adjusting from April's cool 54.1°F (12.3°C) to an enjoyable 61.7°F (16.5°C). In the month of May, Birch Bay witnesses a consistent average low-temperature of 46.6°F (8.1°C).Humidity
In May, the average relative humidity is 76%.Rainfall
In Birch Bay, in May, it is raining for 12.3 days, with typically 2.05" (52mm) of accumulated precipitation. In Birch Bay, during the entire year, the rain falls for 176.1 days and collects up to 43.78" (1112mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
In May, the average ocean temperature is 46°F (7.8°C).Note: Without suitable protection, venturing into 46°F (7.8°C) waters cooler than 50°F (10°C) can lead to pronounced cold shock and rapid breaths.
Daylight
The average length of the day in May is 15h and 19min.On the first day of the month, sunrise is at 5:48 am and sunset at 8:27 pm. On the last day of May, sunrise is at 5:11 am and sunset at 9:05 pm PDT.
Sunshine
In Birch Bay, the average sunshine in May is 9.3h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
Does it snow in May?
How cold is the water in May?
What is the average length of the day in May in Birch Bay?
When is the sunrise / sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Birch Bay, WA
- Average high temperature in May: 61.7°F
The warmest month (with the highest average high temperature) is August (70°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in May: 46.6°F
The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is February (35.8°F).
Average pressure in May
Birch Bay, WA
- Average pressure in May: 30.01"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
Birch Bay, WA
- Average wind speed in May: 4.5mph
The windiest months (with the highest average wind speed) are November and December (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in May
Birch Bay, WA
- Average humidity in May: 76%
The months with the highest relative humidity are January and November (83%).
The month with the lowest relative humidity is July (74%).
Average rainfall in May
Birch Bay, WA
- Average rainfall in May: 2.05"
The wettest month (with the highest rainfall) is November (7.13").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in May
Birch Bay, WA
- Average rainfall days in May: 12.3 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in May
Birch Bay, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Birch Bay, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Birch Bay, WA
- Average sea temperature in May: 46°F
The best months for swimming (with the highest average sea temperature) are August and September (52.6°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).
Average daylight in May /
Average sunshine in May
Birch Bay, 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 18min).
- Average sunshine in May: 9h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in May
Birch Bay, WA
- Average sunshine days in May: 16.4 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in May
Birch Bay, WA
- Average UV index in May: 4
The months with the highest UV index are June and 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
Birch Bay, WA
- Average cloud cover in May: 40
The months with the most cloud cover are January and December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in May
Birch Bay, 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).
Birch Bay, Washington, USA
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