May weather forecastBaltimore, MD
May
Weather in May
May in Baltimore is well within Spring and showcases the best it has to offer with beautiful seasonal flora and warmer temperatures. May brings the first taste of Summer, leading to an increase in outdoor activities—parks, trails, and outdoor adventures are bustling with life. This month peaks at its highest rainfall of 3.07" (78mm) for the year. Along with the higher average temperatures, Baltimore's landscape becomes vibrant and colorful, creating a picturesque backdrop for a month filled with delightful weather scenarios.Temperature
With the onset of May, Baltimore sees a temperature rise, with the average high-temperature moving from April's refreshing 63°F (17.2°C) to an agreeable 72.1°F (22.3°C). The average temperature during May nights dips to a mild 55.9°F (13.3°C).Humidity
May is the most humid month, with an average relative humidity of 77%.Rainfall
In Baltimore, during May, the rain falls for 18.1 days and regularly aggregates up to 3.07" (78mm) of precipitation. In Baltimore, during the entire year, the rain falls for 158.5 days and collects up to 30.75" (781mm) of precipitation.Snowfall
April through October are months without snowfall.Ocean temperature
In Baltimore, in May, the average water temperature is 55.9°F (13.3°C).Note: With an efficient thermal swimsuit, one can navigate 55.9°F (13.3°C) even if it's colder than 50°F (10°C); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 55.4°F (13°C) feels chilly.
Daylight
In Baltimore, the average length of the day in May is 14h and 21min.On the first day of the month, sunrise is at 6:06 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:41 am and sunset at 8:26 pm EDT.
Sunshine
In May, the average sunshine 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 reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the average maximum UV index of 6 translates into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Baltimore, MD
- Average high temperature in May: 72.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (38.5°F).
- Average low temperature in May: 55.9°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in May
Baltimore, MD
- 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 (29.94"Hg).
Average wind speed in May
Baltimore, MD
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Baltimore, MD
- Average humidity in May: 77%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April, July and November (72%).
Average rainfall in May
Baltimore, MD
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in May
Baltimore, MD
- Average rainfall days in May: 18.1 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in May
Baltimore, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Baltimore, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Baltimore, MD
- Average sea temperature in May: 55.9°F
The best month for swimming (with the highest average sea temperature) is August (77.5°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).
Average daylight in May /
Average sunshine in May
Baltimore, MD
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Baltimore, MD
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in May
Baltimore, MD
- 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, February, November and December (UV index 2).
Average cloud cover in May
Baltimore, MD
- 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 29).
Average visibility in May
Baltimore, MD
- 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).
