May weather forecast and climate
Baltimore, MD

A golden evening appearance of tall buildings in Baltimore, Maryland
A golden evening appearance of tall buildings in Baltimore, Maryland

Weather in May

May, the last month of the spring, in Baltimore, is an agreeable month, with average temperature varying between 55.9°F (13.3°C) and 72.1°F (22.3°C).

Temperature

In Baltimore, Maryland, the average high-temperature increases, from a comfortable 63°F (17.2°C) in April, to an agreeable 72.1°F (22.3°C). In Baltimore, Maryland, the average low-temperature is 55.9°F (13.3°C).

Humidity

With an average relative humidity of 77%, May is the most humid month in Baltimore.

Rainfall

In Baltimore, during May, the rain falls for 18.1 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, in Baltimore, there are 158.5 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

In Baltimore snow does not fall in April through October.

Ocean temperature

In Baltimore, the average seawater temperature is 55.9°F (13.3°C).
Note: Swimming in 55.9°F (13.3°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 is 14.4h.

Sunshine

In Baltimore, the average sunshine is 9h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in May in Baltimore?

The average high-temperature, in May, in Baltimore, is 72.1°F (22.3°C), while the average low-temperature is 55.9°F (13.3°C).

What is the most humid month in Baltimore?

With an average relative humidity of 77%, May is the most humid month.

What is the average humidity in May in Baltimore?

In Baltimore, Maryland, the average relative humidity in May is 77%.

How many days does it rain in May in Baltimore?

In Baltimore, during May, the rain falls for 18.1 days and regularly aggregates up to 3.07" (78mm) of precipitation.

When it does not snow in Baltimore?

April through October are months without snowfall.

What is the ocean temperature in May in Baltimore?

In Baltimore, Maryland, in May, the average water temperature is 55.9°F (13.3°C). Swimming in 55.9°F (13.3°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.

How many hours of daylight does Baltimore have in May?

In Baltimore, Maryland, the average length of the day in May is 14.4h.

How long on average sun shines in May in Baltimore?

The average sunshine in May is 9h.

When is the highest UV index in Baltimore?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Baltimore, Maryland.

How high is the UV index in May in Baltimore?

In Baltimore, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.

Average temperature in May
Baltimore, MD

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).

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Average pressure in May
Baltimore, MD

Average pressure in May - Baltimore, MD
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in May
Baltimore, MD

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).

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Average humidity in May
Baltimore, MD

Average humidity in May - Baltimore, MD
  • Average humidity in May: 77%

The month with the highest relative humidity is May (77%).
Months with the lowest relative humidity are April, July and November (72%).

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Average rainfall in May
Baltimore, MD

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").

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Average rainfall days in May
Baltimore, MD

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).

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Average snowfall in May
Baltimore, MD

Average snowfall in May - Baltimore, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.09").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Baltimore, MD

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in May
Baltimore, MD

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).

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Average daylight in May /
Average sunshine in May
Baltimore, MD

Average daylight in May / Average sunshine in May - Baltimore, MD
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in May: 9h

The month with the most sunshine is July (Average sunshine: 10.9h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in May
Baltimore, MD

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).

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Average UV index in May
Baltimore, MD

Average UV index in May - Baltimore, MD
  • Average UV index in May: 6

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Baltimore, MD

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).

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Average visibility in May
Baltimore, MD

Average visibility in May - Baltimore, MD
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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