May weather forecast and climate
Annapolis, MD

The Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome
The Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome

Weather in May

May, the last month of the spring, in Annapolis, is a pleasant month, with average temperature ranging between max 71.2°F (21.8°C) and min 57.7°F (14.3°C).

Temperature

In May, the average high-temperature rises, from a comfortable 62.2°F (16.8°C) in April, to an agreeable 71.2°F (21.8°C). In May, in Annapolis, the average low-temperature is 57.7°F (14.3°C).

Humidity

With an average relative humidity of 78%, May is the most humid month.

Rainfall

In May, in Annapolis, the rain falls for 13.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 120.4 rainfall days, and 10.47" (266mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Annapolis.

Ocean temperature

In May, the average ocean temperature is 57.4°F (14.1°C).
Note: Swimming in 57.4°F (14.1°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

In Annapolis, the average length of the day is 14.3h.

Sunshine

In May, the average sunshine in Annapolis, Maryland, 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 of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in May in Annapolis?

In Annapolis, in May, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 57.7°F (14.3°C).

What is the most humid month in Annapolis?

May is the most humid month, with an average relative humidity of 78%.

What is the average humidity in May in Annapolis?

The average relative humidity in May in Annapolis is 78%.

How many days does it rain in May in Annapolis?

In May, the rain falls for 13.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated.

When it does not snow in Annapolis?

In Annapolis snow does not fall in April through October.

What is the water temperature in May in Annapolis?

In May, the average ocean temperature in Annapolis, Maryland, is 57.4°F (14.1°C). Swimming in 57.4°F (14.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in May in Annapolis?

The average length of the day in May in Annapolis, Maryland, is 14.3h.

How long on average sun shines in May in Annapolis?

The average sunshine in May in Annapolis, Maryland, is 9h.

What is the month with the highest UV index in Annapolis?

Months with the highest UV index in Annapolis are May through August, with an average maximum UV index of 6.

What is the UV index intensity in May in Annapolis?

In Annapolis, Maryland, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in May
Annapolis, MD

Average temperature in May - Annapolis, MD
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in May: 57.7°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

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Average pressure in May
Annapolis, MD

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

The month with the highest atmospheric pressure is November (30.13").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in May
Annapolis, MD

Average wind speed in May - Annapolis, MD
  • Average wind speed in May: 8mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in May
Annapolis, MD

Average humidity in May - Annapolis, MD
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
Months with the lowest relative humidity are January, March, April and November (72%).

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Average rainfall in May
Annapolis, MD

Average rainfall in May - Annapolis, MD
  • Average rainfall in May: 0.87"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in May
Annapolis, MD

Average rainfall days in May - Annapolis, MD
  • Average rainfall days in May: 13.8 days

Months with the highest number of rainy days are July and August (14.3 days).
The month with the least rainy days is November (5.3 days).

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Average snowfall in May
Annapolis, MD

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

The month with the highest snowfall is January (0.67").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Annapolis, MD

Average snowfall days in May - Annapolis, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.5 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
Annapolis, MD

Average sea temperature in May - Annapolis, MD
  • Average sea temperature in May: 57.4°F

The best month for swimming (with the highest average sea temperature) is August (77.8°F).
The coldest month (with the lowest average sea temperature) is February (45.1°F).

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

Average daylight in May / Average sunshine in May - Annapolis, MD
  • Average daylight in May: 14.3h

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: 10.8h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in May
Annapolis, MD

Average sunshine days in May - Annapolis, MD
  • Average sunshine days in May: 14.7 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is August (13.8 days).

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Average UV index in May
Annapolis, MD

Average UV index in May - Annapolis, 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 and December (UV index 2).

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Average cloud cover in May
Annapolis, MD

Average cloud cover in May - Annapolis, MD
  • Average cloud cover in May: 41

Months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in May
Annapolis, MD

Average visibility in May - Annapolis, 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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