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
The commencement of May in Barnstable, Massachusetts, sees a minor shift in the average high-temperature, moving from a frosty 47.1°F (8.4°C) in April to a moderate 55.6°F (13.1°C). May notes an average low temperature of 50.9°F (10.5°C), subtly down from the daytime highs.Humidity
The months with the highest humidity in Barnstable are May through July, with an average relative humidity of 83%.Rainfall
In May, the rain falls for 13.2 days. Throughout May, 1.14" (29mm) of precipitation is accumulated. Throughout the year, there are 129.6 rainfall days, and 13.94" (354mm) of precipitation is accumulated.Snowfall
May through November are months without snowfall.Ocean temperature
In Barnstable, Massachusetts, the average seawater temperature in May is 49.1°F (9.5°C).Note: With the appropriate swimsuit, one can swim in 49.1°F (9.5°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.
Daylight
The average length of the day in May in Barnstable is 14h and 34min.On the first day of the month, sunrise is at 5:36 am and sunset at 7:39 pm. On the last day of May, in Barnstable, sunrise is at 5:09 am and sunset at 8:08 pm EDT.
Sunshine
The average sunshine in May is 8.7h.UV index
In Barnstable, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 4 in May transforms into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What are May temperatures in Barnstable?
What is the most humid month in Barnstable?
What is the average humidity in May in Barnstable?
How many days does it rain in May in Barnstable?
When it does not snow in Barnstable?
Does it snow in Barnstable in May?
How cold is the water in May in Barnstable?
How many hours of daylight does Barnstable have in May?
When are sunrise and sunset in May in Barnstable?
How long on average sun shines in May in Barnstable?
How high is the UV index in May in Barnstable?
Average temperature in May
Barnstable, MA
- Average high temperature in May: 55.6°F
The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in May: 50.9°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in May
Barnstable, 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
Barnstable, MA
- Average wind speed in May: 12.1mph
The windiest month (with the highest average wind speed) is January (16.4mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).
Average humidity in May
Barnstable, 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
Barnstable, MA
- Average rainfall in May: 1.14"
The wettest month (with the highest rainfall) is October (1.89").
The driest month (with the least rainfall) is August (0.94").
Average rainfall days in May
Barnstable, MA
- Average rainfall days in May: 13.2 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in May
Barnstable, MA
- Average snowfall in May: 0"
The months with the highest snowfall are January and February (0.63").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in May
Barnstable, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
Barnstable, MA
- Average sea temperature in May: 49.2°F
The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).
Average daylight in May /
Average sunshine in May
Barnstable, MA
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in May
Barnstable, MA
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is February (14.8 days).
Average UV index in May
Barnstable, MA
- Average UV index in May: 4
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
Barnstable, MA
- Average cloud cover in May: 43
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Barnstable, 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).
Barnstable, Massachusetts, USA
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