May weather forecastMonument Beach, MA
May
Weather in May
The last month of the spring, May, is a mild month in Monument Beach, Massachusetts, with temperature in the range of an average high of 59.5°F (15.3°C) and an average low of 50.7°F (10.4°C).Temperature
May marks a rise in the average high-temperature, moving from April's cool 50.5°F (10.3°C) to a mild 59.5°F (15.3°C). The nights of May are characterized by an average low-temperature of 50.7°F (10.4°C), subtly descending from daytime highs.Humidity
In May, the average relative humidity is 80%.Rainfall
In Monument Beach, Massachusetts, in May, during 15.8 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 157.4 rainfall days, and 32.2" (818mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Ocean temperature
In Monument Beach, the average seawater temperature in May is 50.4°F (10.2°C).Note: Staying in 50.4°F (10.2°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
In Monument Beach, the average length of the day in May is 14h and 34min.On the first day of the month, sunrise is at 5:37 am and sunset at 7:41 pm. On the last day of May, sunrise is at 5:10 am and sunset at 8:10 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
In Monument Beach, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In May, a regular UV index of 5 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. 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
Monument Beach, MA
- Average high temperature in May: 59.5°F
The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in May: 50.7°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in May
Monument Beach, MA
- Average pressure in May: 30.01"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
Monument Beach, MA
- Average wind speed in May: 10.1mph
The windiest month (with the highest average wind speed) is January (13.7mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in May
Monument Beach, MA
- Average humidity in May: 80%
The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in May
Monument Beach, MA
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in May
Monument Beach, MA
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (9 days).
Average snowfall in May
Monument Beach, MA
- Average snowfall in May: 0"
The months with the highest snowfall are February and March (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Monument Beach, MA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in May
Monument Beach, MA
- Average sea temperature in May: 50.4°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in May /
Average sunshine in May
Monument Beach, 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 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in May
Monument Beach, MA
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in May
Monument Beach, 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
Monument Beach, MA
- Average cloud cover in May: 43
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Monument Beach, 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).





