April weather forecast
Charlestown, MD

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Weather in April

April is a refreshing spring month in Charlestown, Maryland, with temperature in the range of an average high of 61.9°F (16.6°C) and an average low of 45°F (7.2°C).

Temperature

An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a cool 50°F (10°C) to an enjoyable 61.9°F (16.6°C). April's nights in Charlestown observe an average temperature of 45°F (7.2°C).

Humidity

The least humid month is April, with an average relative humidity of 74%.

Rainfall

In Charlestown, in April, during 14.4 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Charlestown, during the entire year, the rain falls for 150.3 days and collects up to 29.25" (743mm) of precipitation.

Snowfall

In Charlestown, snow does not fall in April, June through October.

Ocean temperature

In Charlestown, Maryland, the average seawater temperature in April is 47.7°F (8.7°C).
Note: It is risky to swim in 47.7°F (8.7°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.

Daylight

In April, the average length of the day in Charlestown is 13h and 16min.
On the first day of the month, sunrise is at 6:46 am and sunset at 7:28 pm. On the last day of April, in Charlestown, sunrise is at 6:04 am and sunset at 7:57 pm EDT.

Sunshine

In April, the average sunshine is 8.5h.

UV index

In Charlestown, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In April, the UV index of 4 transforms into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What is the temperature in April in Charlestown?

The average high-temperature, in April, in Charlestown, is 61.9°F (16.6°C), while the average low-temperature is 45°F (7.2°C).

What is the least humid month in Charlestown?

With an average relative humidity of 74%, April is the least humid month.

What is the average humidity in April in Charlestown?

The average relative humidity in April in Charlestown is 74%.

How much does it rain in Charlestown in April?

In Charlestown, Maryland, in April, it is raining for 14.4 days, with typically 2.17" (55mm) of accumulated precipitation.

When it does not snow in Charlestown?

April, June through October are months without snowfall in Charlestown, Maryland.

Does it snow in Charlestown in April?

In April, in Charlestown, it doesn't snow. March is the latest month when it typically snows.

What is the ocean temperature in April in Charlestown?

In Charlestown, Maryland, the average seawater temperature in April is 47.7°F (8.7°C). 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.

What is the average length of the day in April in Charlestown?

The average day length in April in Charlestown is 13h and 16min.

When are sunrise and sunset in April in Charlestown?

On the first day of April in Charlestown, sunrise is at 6:46 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:57 pm EDT.

How long on average sun shines in April in Charlestown?

The average sunshine duration in April is 8.5h.

What is the UV index intensity in April in Charlestown?

In April, the average daily maximum UV index in Charlestown, Maryland, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Charlestown, MD

Average temperature in April - Charlestown, MD
  • Average high temperature in April: 61.9°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 (37.9°F).

  • Average low temperature in April: 45°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in April
Charlestown, MD

Average pressure in April - Charlestown, MD
  • Average pressure in April: 29.99"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 April
Charlestown, MD

Average wind speed in April - Charlestown, MD
  • Average wind speed in April: 8.8mph

The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in April
Charlestown, MD

Average humidity in April - Charlestown, MD
  • Average humidity in April: 74%

The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in April
Charlestown, MD

Average rainfall in April - Charlestown, MD
  • Average rainfall in April: 2.17"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in April
Charlestown, MD

Average rainfall days in April - Charlestown, MD
  • Average rainfall days in April: 14.4 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in April
Charlestown, MD

Average snowfall in April - Charlestown, MD
  • Average snowfall in April: 0"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, June, July, August, September and October (0").

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Average snowfall days in April
Charlestown, MD

Average snowfall days in April - Charlestown, MD
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).

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Average sea temperature in April
Charlestown, MD

Average sea temperature in April - Charlestown, MD
  • Average sea temperature in April: 47.6°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (40.9°F).

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Average daylight in April /
Average sunshine in April
Charlestown, MD

Average daylight in April / Average sunshine in April - Charlestown, MD
  • Average daylight in April: 13h and 2min

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 24min).

  • Average sunshine in April: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in April
Charlestown, MD

Average sunshine days in April - Charlestown, MD
  • Average sunshine days in April: 14.3 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in April
Charlestown, MD

Average UV index in April - Charlestown, MD
  • Average UV index in April: 4

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).

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Average cloud cover in April
Charlestown, MD

Average cloud cover in April - Charlestown, MD
  • Average cloud cover in April: 43

The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in April
Charlestown, MD

Average visibility in April - Charlestown, MD
  • Average visibility in April: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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Charlestown, Maryland, USA

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