May weather forecastAlexandria, VA
May
Weather in May
May in Alexandria embraces the heart of spring, acting as a threshold to summer. Average temperature highs reach 74.7°F (23.7°C), marking the arrival of more sun-drenched days. The city comes alive with vibrant colors due to consistent rainfall and increased relative humidity, leading to high blossoming. Residents cherish the opportunity to engage in outdoor activities in improved weather conditions. As June rolls in, the city gets ready for summer's onset.Temperature
The rise of average high-temperatures is seen in May, with an increase from a refreshing 65.1°F (18.4°C) in April to a moderately hot 74.7°F (23.7°C). Alexandria observes an average low-temperature of 56.8°F (13.8°C) during May nights.Humidity
May, October and December, with an average relative humidity of 76%, are the most humid months in Alexandria.Rainfall
In Alexandria, during May, the rain falls for 17.7 days and regularly aggregates up to 2.95" (75mm) of precipitation. Throughout the year, in Alexandria, there are 158.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.Snowfall
In Alexandria, snow does not fall in May through October.Ocean temperature
In Alexandria, in May, the average water temperature is 57.6°F (14.2°C).Note: Swimming in 57.6°F (14.2°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
The average length of the day in May in Alexandria is 14h and 19min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:00 pm. On the last day of May, in Alexandria, sunrise is at 5:44 am and sunset at 8:27 pm EDT.
Sunshine
The average sunshine in May is 9h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 during May translates into the following guidance:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Alexandria, VA
- Average high temperature in May: 74.7°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in May: 56.8°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in May
Alexandria, VA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Alexandria, VA
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Alexandria, VA
- Average humidity in May: 76%
The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in May
Alexandria, VA
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Alexandria, VA
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in May
Alexandria, VA
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Alexandria, VA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Alexandria, VA
- Average sea temperature in May: 57.5°F
The best month for swimming (with the highest average sea temperature) is August (78°F).
The coldest month (with the lowest average sea temperature) is February (45.2°F).
Average daylight in May /
Average sunshine in May
Alexandria, VA
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- 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: 5h and 6min).
Average sunshine days in May
Alexandria, VA
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in May
Alexandria, VA
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Alexandria, VA
- Average cloud cover in May: 43
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in May
Alexandria, VA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
