May weather forecastSwampscott, MA
May
Weather in May
May, the last month of the spring in Swampscott, is a refreshing month, with an average temperature ranging between min 49.8°F (9.9°C) and max 64.8°F (18.2°C).Temperature
An increase in the average high-temperature marks May, moving from April's fresh 54.1°F (12.3°C) to a refreshing 64.8°F (18.2°C). Throughout the month of May, Swampscott sees a steady low-temperature average of 49.8°F (9.9°C).Humidity
The average relative humidity in May is 73%.Rainfall
In May, the rain falls for 15.4 days. Throughout May, 1.93" (49mm) of precipitation is accumulated. In Swampscott, during the entire year, the rain falls for 144.9 days and collects up to 27.91" (709mm) of precipitation.Snowfall
May through September are months without snowfall.Ocean temperature
In Swampscott, the average seawater temperature in May is 49.1°F (9.5°C).Note: Beware of 49.1°F (9.5°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.
Daylight
In May, the average length of the day is 14h and 38min.On the first day of the month, sunrise is at 5:37 am and sunset at 7:43 pm. On the last day of May, sunrise is at 5:09 am and sunset at 8:13 pm EDT.
Sunshine
In Swampscott, the average sunshine in May is 8.3h.UV index
In Swampscott, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In May, the maximum UV index of 5 translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Swampscott, MA
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in May: 49.8°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in May
Swampscott, 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 (29.92"Hg).
Average wind speed in May
Swampscott, MA
- Average wind speed in May: 7.9mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Swampscott, MA
- Average humidity in May: 73%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (70%).
Average rainfall in May
Swampscott, MA
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is December (2.99").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in May
Swampscott, MA
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in May
Swampscott, MA
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Swampscott, MA
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in May
Swampscott, MA
- Average sea temperature in May: 49°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in May /
Average sunshine in May
Swampscott, 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 6min).
- Average sunshine in May: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in May
Swampscott, MA
- Average sunshine days in May: 14.1 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in May
Swampscott, MA
- Average UV index in May: 5
The months with the highest UV index are June, 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
Swampscott, MA
- Average cloud cover in May: 46
The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Swampscott, 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).
