May weather forecastWest Falmouth, MA
May
Weather in May
The last month of the spring, May, is a mild month in West Falmouth, Massachusetts, with an average temperature fluctuating between 57.7°F (14.3°C) and 51.4°F (10.8°C).Temperature
May signifies a subtle uplift in the average high-temperature, adjusting from a chilly 49.1°F (9.5°C) in April to a mild 57.7°F (14.3°C). West Falmouth, during the May nights, maintains an average temperature of 51.4°F (10.8°C), closely aligned with its daytime readings.Humidity
In May, the average relative humidity is 81%.Rainfall
In May, the rain falls for 15.7 days. Throughout May, 2.4" (61mm) of precipitation is accumulated. In West Falmouth, during the entire year, the rain falls for 155.1 days and collects up to 32.48" (825mm) of precipitation.Snowfall
In West Falmouth, snow does not fall in May through September.Ocean temperature
In West Falmouth, the average seawater temperature in May is 50.4°F (10.2°C).Note: Swimming in 50.4°F (10.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
In West Falmouth, the average length of the day in May is 14h and 33min.On the first day of May, sunrise is at 5:38 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:09 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
In May, the average daily maximum UV index in West Falmouth is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 during May translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
West Falmouth, MA
- Average high temperature in May: 57.7°F
The warmest month (with the highest average high temperature) is August (74.5°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in May: 51.4°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 (29.1°F).
Average pressure in May
West Falmouth, 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 Falmouth, MA
- Average wind speed in May: 11.2mph
The windiest month (with the highest average wind speed) is January (14.9mph).
The calmest months (with the lowest average wind speed) are July and August (9.9mph).
Average humidity in May
West Falmouth, MA
- Average humidity in May: 81%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).
Average rainfall in May
West Falmouth, MA
- Average rainfall in May: 2.4"
The wettest month (with the highest rainfall) is December (3.7").
The driest months (with the least rainfall) are August and September (1.85").
Average rainfall days in May
West Falmouth, MA
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is April (16.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in May
West Falmouth, MA
- Average snowfall in May: 0"
The month with the highest snowfall is March (2.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
West Falmouth, MA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
West Falmouth, 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
West Falmouth, MA
- Average daylight in May: 14h and 30min
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 36min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
West Falmouth, MA
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is August (16.4 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in May
West Falmouth, 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
West Falmouth, MA
- Average cloud cover in May: 44
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
West Falmouth, 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).
