May weather forecast
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 temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 57.7°F (14.3°C).

Temperature

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

Humidity

The most humid month in Annapolis is May, with an average relative humidity of 78%.

Rainfall

In Annapolis, Maryland, it is raining for 13.8 days, with typically 0.87" (22mm) of accumulated precipitation. In Annapolis, during the entire year, the rain falls for 120.4 days and collects up to 10.47" (266mm) of precipitation.

Snowfall

April through October are months without snowfall in Annapolis, Maryland.

Ocean temperature

In Annapolis, the average seawater temperature in May is 57.4°F (14.1°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

In Annapolis, the average length of the day in May is 14h and 19min.
On the first day of May in Annapolis, sunrise is at 6:07 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:24 pm EDT.

Sunshine

In Annapolis, the average sunshine in May is 9h.

UV index

The months with the highest UV index in Annapolis, Maryland, are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

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, Maryland, is 78%.

How many days does it rain in May in Annapolis?

In Annapolis, in May, during 13.8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

When it does not snow in Annapolis?

In Annapolis, snow does not fall in April through October.

How cold is the water in May in Annapolis?

In Annapolis, the average seawater temperature in May 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?

In May, the average day length in Annapolis is 14h and 19min.

When is the sunrise / sunset in May in Annapolis?

In May, on the first day of the month, sunrise is at 6:07 am and sunset at 7:58 pm. On the last day of the month, in Annapolis, sunrise is at 5:42 am and sunset at 8:24 pm EDT.

How long on average sun shines in May in Annapolis?

The average sunshine duration in May is 9h.

What are the months with the highest UV index in Annapolis?

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

What is the UV index reading in May in Annapolis?

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

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"Hg

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

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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%).
The 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

The 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").
The 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).
The 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: 14h and 19min

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

  • 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

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 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

The 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

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).

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