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
Observing a slight rise in May, the average high-temperature shifts from April's frosty 48.7°F (9.3°C) to a refreshing 56.3°F (13.5°C). A mean low-temperature of 51.4°F (10.8°C) is a distinguishing feature of May, indicating a slight dip from daytime highs.Humidity
The months with the highest humidity are May through July, with an average relative humidity of 83%.Rainfall
In Oak Bluffs, during May, the rain falls for 8.5 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Oak Bluffs, during the entire year, the rain falls for 89.3 days and collects up to 6.14" (156mm) of precipitation.Snowfall
April through November are months without snowfall.Ocean temperature
In May, the average ocean temperature is 50.9°F (10.5°C).Note: Beware when you're in 50.9°F (10.5°C) waters; 55.4°F (13°C) is chilling and anything below 50°F (10°C) could cause breathing hindrance and a sudden cold shock, given your physical condition.
Daylight
In May, the average length of the day is 14h and 32min.On the first day of the month, sunrise is at 5:38 am and sunset at 7:40 pm. On the last day of May, in Oak Bluffs, sunrise is at 5:10 am and sunset at 8:09 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In Oak Bluffs, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What are the most humid months?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
How cold is the water in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Oak Bluffs, MA
- Average high temperature in May: 56.3°F
The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is August (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in May
Oak Bluffs, MA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Oak Bluffs, MA
- Average wind speed in May: 12.3mph
The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.7mph).
Average humidity in May
Oak Bluffs, MA
- Average humidity in May: 83%
The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).
Average rainfall in May
Oak Bluffs, MA
- Average rainfall in May: 0.47"
The wettest month (with the highest rainfall) is October (0.83").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
Oak Bluffs, MA
- Average rainfall days in May: 8.5 days
The month with the highest number of rainy days is July (9.1 days).
The months with the least rainy days are September and November (5.9 days).
Average snowfall in May
Oak Bluffs, MA
- Average snowfall in May: 0"
The months with the highest snowfall are January and February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Oak Bluffs, MA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Oak Bluffs, MA
- Average sea temperature in May: 50.9°F
The best month for swimming (with the highest average sea temperature) is August (68.5°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).
Average daylight in May /
Average sunshine in May
Oak Bluffs, MA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Oak Bluffs, MA
- Average sunshine days in May: 19.4 days
The month with the most sunshine days is September (21.4 days).
The month with the least sunshine days is February (18.5 days).
Average UV index in May
Oak Bluffs, MA
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Oak Bluffs, MA
- Average cloud cover in May: 44
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Oak Bluffs, MA
- 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).
Oak Bluffs, Massachusetts, USA
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