May weather forecastWest Dennis, MA
May
Weather in May
May, the last month of the spring in West Dennis, is a fresh month, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 55°F (12.8°C).Temperature
May introduces a minor temperature shift, with average high-temperatures adjusting from April's chilly 47.1°F (8.4°C) to a cool 55°F (12.8°C). West Dennis documents a consistent average low-temperature of 51.3°F (10.7°C) at night during May.Humidity
In May, the average relative humidity is 83%.Rainfall
In West Dennis, Massachusetts, during May, the rain falls for 12.5 days and regularly aggregates up to 1.14" (29mm) of precipitation. In West Dennis, during the entire year, the rain falls for 129 days and collects up to 14.21" (361mm) of precipitation.Snowfall
In West Dennis, snow does not fall in May through November.Ocean temperature
In West Dennis, in May, the average water temperature is 49.1°F (9.5°C).Note: Immersing oneself in 49.1°F (9.5°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
Daylight
In May, the average length of the day is 14h and 33min.On the first day of May in West Dennis, sunrise is at 5:36 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:08 am and sunset at 8:08 pm EDT.
Sunshine
In West Dennis, the average sunshine in May is 8.6h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 4 in May translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
West Dennis, MA
- Average high temperature in May: 55°F
The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in May: 51.3°F
The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in May
West Dennis, 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
West Dennis, MA
- Average wind speed in May: 12.5mph
The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).
Average humidity in May
West Dennis, MA
- Average humidity in May: 83%
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).
Average rainfall in May
West Dennis, MA
- Average rainfall in May: 1.14"
The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").
Average rainfall days in May
West Dennis, MA
- Average rainfall days in May: 12.5 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in May
West Dennis, MA
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in May
West Dennis, MA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
West Dennis, 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
West Dennis, MA
- Average daylight in May: 14h and 36min
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 36min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in May
West Dennis, MA
- Average sunshine days in May: 16.4 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).
Average UV index in May
West Dennis, 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
West Dennis, MA
- Average cloud cover in May: 43
The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
West Dennis, 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).
