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
May's onset witnesses a minor shift in the average high-temperature, moving from a cool 54.1°F (12.3°C) in April to a refreshing 61.5°F (16.4°C). Lummi Island's temperature drops to an average low of 45.7°F (7.6°C) during the nights of May.Humidity
The average relative humidity in May in Lummi Island is 77%.Rainfall
In Lummi Island, in May, it is raining for 12.6 days, with typically 1.97" (50mm) of accumulated precipitation. In Lummi Island, during the entire year, the rain falls for 178.6 days and collects up to 37.32" (948mm) of precipitation.Snowfall
May through October are months without snowfall in Lummi Island.Daylight
The average length of the day in May is 15h and 17min.On the first day of the month, sunrise is at 5:48 am and sunset at 8:26 pm. On the last day of May, in Lummi Island, sunrise is at 5:12 am and sunset at 9:04 pm PDT.
Sunshine
In May, the average sunshine is 9.4h.UV index
In Lummi Island, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 4 suggests these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the average May temperature in Lummi Island?
What is the average humidity in May in Lummi Island?
How much does it rain in Lummi Island in May?
When it does not snow in Lummi Island?
Does it snow in Lummi Island in May?
How many hours of daylight does Lummi Island have in May?
When is the sunrise / sunset in May in Lummi Island?
How long on average sun shines in May in Lummi Island?
How high is the UV index in May in Lummi Island?
Average temperature in May
Lummi Island, WA
- Average high temperature in May: 61.5°F
The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in May: 45.7°F
The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is February (35.2°F).
Average pressure in May
Lummi Island, WA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in May
Lummi Island, WA
- Average wind speed in May: 4.2mph
The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in May
Lummi Island, WA
- Average humidity in May: 77%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is July (74%).
Average rainfall in May
Lummi Island, WA
- Average rainfall in May: 1.97"
The wettest month (with the highest rainfall) is November (5.71").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in May
Lummi Island, WA
- Average rainfall days in May: 12.6 days
The month with the highest number of rainy days is November (20.1 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in May
Lummi Island, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Lummi Island, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Lummi Island, 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 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in May
Lummi Island, WA
- Average sunshine days in May: 16.7 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in May
Lummi Island, 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
Lummi Island, WA
- Average cloud cover in May: 39
The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in May
Lummi Island, WA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Lummi Island, Washington, USA
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