May weather forecastSeaford, NY
May
Weather in May
May, the last month of the spring in Seaford, is a refreshing month, with an average temperature varying between 62.1°F (16.7°C) and 54.7°F (12.6°C).Temperature
The shift into May brings an increase in the average high-temperature, moving from a cool 52.7°F (11.5°C) in April to a refreshing 62.1°F (16.7°C). A consistent average low-temperature of 54.7°F (12.6°C), with a minor variance from the daytime highs, is noted during the nights of May.Humidity
The most humid month in Seaford is May, with an average relative humidity of 78%.Rainfall
In Seaford, in May, during 15.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Seaford, during the entire year, the rain falls for 158.8 days and collects up to 31.38" (797mm) of precipitation.Snowfall
May through September are months without snowfall.Ocean temperature
In Seaford, in May, the average water temperature is 54.1°F (12.3°C).Note: Navigating the 54.1°F (12.3°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.
Daylight
In Seaford, the average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 5:51 am and sunset at 7:50 pm. On the last day of May, sunrise is at 5:25 am and sunset at 8:18 pm EDT.
Sunshine
In May, the average sunshine is 9h.UV index
In Seaford, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Seaford, NY
- Average high temperature in May: 62.1°F
The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in May: 54.7°F
The months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in May
Seaford, NY
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Seaford, NY
- Average wind speed in May: 10.3mph
The windiest month (with the highest average wind speed) is January (13.9mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in May
Seaford, NY
- Average humidity in May: 78%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in May
Seaford, NY
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in May
Seaford, NY
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in May
Seaford, NY
- Average snowfall in May: 0"
The month with the highest snowfall is March (1.34").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Seaford, NY
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in May
Seaford, NY
- Average sea temperature in May: 54.1°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).
Average daylight in May /
Average sunshine in May
Seaford, NY
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Seaford, NY
- Average sunshine days in May: 14.1 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in May
Seaford, NY
- 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 and December (UV index 2).
Average cloud cover in May
Seaford, NY
- Average cloud cover in May: 41
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Seaford, NY
- 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).
