Annapolis
Maryland, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Annapolis, MD

A view of Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome
A view of Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome
April in Annapolis, Maryland, is an enjoyable spring month, with temperature in the range of an average high of 63.9°F (17.7°C) and an average low of 45.9°F (7.7°C).

Temperature

In Annapolis, Maryland, the average high-temperature in April rises, from a cool 53.2°F (11.8°C) in March, to a comfortable 63.9°F (17.7°C). In Annapolis, the average low-temperature is 45.9°F (7.7°C).

Rainfall

In April, the rain falls for 11.2 days. Throughout April, 3.7" (93mm) of precipitation is accumulated. In Annapolis, during the entire year, the rain falls for 115.1 days and collects up to 47.3" (1200.7mm) of precipitation.

Ocean temperature

In Annapolis, the average seawater temperature is 51.4°F (10.8°C).
Note: Swimming in 51.4°F (10.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In April, the average length of the day in Annapolis, Maryland, is 13.3h.

Sunshine

The average sunshine is 8h.

UV index

The average daily maximum UV index in Annapolis is 6. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in April interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 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.

What is the temperature in April in Annapolis?

In April, in Annapolis, the average high-temperature is 63.9°F (17.7°C), and the average low-temperature is 45.9°F (7.7°C).

How much does it rain in Annapolis in April?

In Annapolis, Maryland, in April, it is raining for 11.2 days, with typically 3.7" (93mm) of accumulated precipitation.

What is the ocean temperature in April in Annapolis?

In Annapolis, Maryland, in April, the average water temperature is 51.4°F (10.8°C). Swimming in 51.4°F (10.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Annapolis have in April?

The average length of the day in April in Annapolis is 13.3h.

How long on average sun shines in April in Annapolis?

In Annapolis, the average sunshine in April is 8h.

What is the UV index intensity in April in Annapolis?

In April, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to the UV radiation.
Average temperature in April - Annapolis, MD
  • Average high temperature in April: 63.9°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (42.7°F).

  • Average low temperature in April: 45.8°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).

Average rainfall in April - Annapolis, MD
  • Average rainfall in April: 3.7"

The wettest month (with the highest rainfall) is September (4.8").
The driest month (with the lowest rainfall) is February (2.9").

Average rainfall days in April - Annapolis, MD
  • Average rainfall days in April: 11.2 days

Months with the highest number of rainy days are March and April (11.2 days).
Months with the lowest number of rainy days are September and October (7.8 days).

Average sea temperature in April - Annapolis, MD
  • Average sea temperature in April: 51.5°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).

Average daylight in April / Average sunshine in April - Annapolis, MD
  • Average daylight in April: 13.3h

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

  • Average sunshine in April: 8h

Months with most sunshine are June, July and August (Average sunshine: 9h).
Months with least sunshine are January, November and December (Average sunshine: 5).

Average UV index in April - Annapolis, MD
  • Average UV index in April: 6

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).