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
With the onset of May, Deer Isle's average high-temperature experiences a rise, moving from April's frosty 46°F (7.8°C) to a cool 55°F (12.8°C). Throughout May, the nighttime temperature in Deer Isle averages to a chilly 45.5°F (7.5°C).Humidity
In May, the average relative humidity in Deer Isle is 82%.Rainfall
In Deer Isle, during May, the rain falls for 12 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Deer Isle, Maine, during the entire year, the rain falls for 115.5 days and collects up to 17.95" (456mm) of precipitation.Snowfall
In Deer Isle, snow does not fall in May through September.Ocean temperature
In Deer Isle, in May, the average water temperature is 44.4°F (6.9°C).Note: Staying in 44.4°F (6.9°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
The average length of the day in May is 14h and 47min.On the first day of May in Deer Isle, sunrise is at 5:24 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 4:54 am and sunset at 8:10 pm EDT.
Sunshine
In May, the average sunshine in Deer Isle is 8.1h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 4 in May interprets into the following advice:
Guard yourself - Precautionary measures against sun damage are advocated. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the usual temperature for Deer Isle in May?
What is the average humidity in May in Deer Isle?
How much does it rain in Deer Isle in May?
When it does not snow in Deer Isle?
Does it snow in Deer Isle in May?
How cold is the water in May in Deer Isle?
How many hours of daylight does Deer Isle have in May?
When is the sunrise / sunset in May in Deer Isle?
How long on average sun shines in May in Deer Isle?
What is the UV index intensity in May in Deer Isle?
Average temperature in May
Deer Isle, ME
- Average high temperature in May: 55°F
The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 45.5°F
The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in May
Deer Isle, ME
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Deer Isle, ME
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in May
Deer Isle, ME
- Average humidity in May: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in May
Deer Isle, ME
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in May
Deer Isle, ME
- Average rainfall days in May: 12 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in May
Deer Isle, ME
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Deer Isle, ME
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in May
Deer Isle, ME
- Average sea temperature in May: 44.5°F
The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).
Average daylight in May /
Average sunshine in May
Deer Isle, ME
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in May
Deer Isle, ME
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is July (15.4 days).
Average UV index in May
Deer Isle, ME
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Deer Isle, ME
- Average cloud cover in May: 47
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Deer Isle, ME
- 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).
Deer Isle, Maine, USA
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