May weather forecast
Rock Hall, MD

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Weather in May

The last month of the spring, May, is a pleasant month in Rock Hall, Maryland, with temperature in the range of an average high of 70.9°F (21.6°C) and an average low of 56.8°F (13.8°C).

Temperature

The arrival of May signals an increase in the average high-temperature, moving from a comfortable 61.7°F (16.5°C) in April to a pleasant 70.9°F (21.6°C). During the month of May, the temperature generally drops to a low average of 56.8°F (13.8°C).

Humidity

The most humid month is May, with an average relative humidity of 79%.

Rainfall

In Rock Hall, in May, during 12.7 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Rock Hall, during the entire year, the rain falls for 120.1 days and collects up to 12.87" (327mm) of precipitation.

Snowfall

May through November are months without snowfall in Rock Hall.

Ocean temperature

In May, the average ocean temperature is 55.9°F (13.3°C).
Note: Swimming in 55.9°F (13.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in May in Rock Hall is 14h and 20min.
On the first day of May, sunrise is at 6:05 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:24 pm EDT.

Sunshine

In May, the average sunshine is 9.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 6 during May translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Rock Hall in May?

In May, the average high-temperature and low-temperature are 70.9°F (21.6°C) and 56.8°F (13.8°C) respectively.

What is the most humid month?

The most humid month is May, with an average relative humidity of 79%.

What is the average humidity in May?

In May, the average relative humidity is 79%.

How much does it rain in May?

In Rock Hall, during May, the rain falls for 12.7 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When it does not snow in Rock Hall?

May through November are months without snowfall.

Does it snow in May?

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

What is the water temperature in May?

In Rock Hall, the average seawater temperature in May is 55.9°F (13.3°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.

How many hours of daylight does Rock Hall have in May?

In May, the average day length is 14h and 20min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:05 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:24 pm EDT.

How long on average sun shines in May?

The average sunshine duration in May is 9.1h.

What is the month with the highest UV index?

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

What is the UV index intensity in May?

In May, the average daily maximum UV index in Rock Hall is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Rock Hall, MD

Average temperature in May - Rock Hall, MD
  • Average high temperature in May: 70.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in May: 56.8°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in May
Rock Hall, MD

Average pressure in May - Rock Hall, 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).

Average wind speed in May
Rock Hall, MD

Average wind speed in May - Rock Hall, MD
  • Average wind speed in May: 7.8mph

The windiest months (with the highest average wind speed) are January, February and March (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in May
Rock Hall, MD

Average humidity in May - Rock Hall, MD
  • Average humidity in May: 79%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is November (73%).

Average rainfall in May
Rock Hall, MD

Average rainfall in May - Rock Hall, MD
  • Average rainfall in May: 1.14"

The wettest months (with the highest rainfall) are July and August (1.81").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in May
Rock Hall, MD

Average rainfall days in May - Rock Hall, MD
  • Average rainfall days in May: 12.7 days

The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is November (5.6 days).

Average snowfall in May
Rock Hall, MD

Average snowfall in May - Rock Hall, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.83").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in May
Rock Hall, MD

Average snowfall days in May - Rock Hall, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in May
Rock Hall, MD

Average sea temperature in May - Rock Hall, MD
  • Average sea temperature in May: 55.9°F

The best month for swimming (with the highest average sea temperature) is August (77.2°F).
The coldest month (with the lowest average sea temperature) is February (43.7°F).

Average daylight in May /
Average sunshine in May
Rock Hall, MD

Average daylight in May / Average sunshine in May - Rock Hall, MD
  • Average daylight in May: 14h 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 30min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in May
Rock Hall, MD

Average sunshine days in May - Rock Hall, MD
  • Average sunshine days in May: 14.5 days

The months with the most sunshine days are January and November (21.9 days).
The month with the least sunshine days is July (14.1 days).

Average UV index in May
Rock Hall, MD

Average UV index in May - Rock Hall, 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).

Average cloud cover in May
Rock Hall, MD

Average cloud cover in May - Rock Hall, MD
  • Average cloud cover in May: 42

The months with the most cloud cover are February, March and December (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in May
Rock Hall, MD

Average visibility in May - Rock Hall, 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).

Rock Hall, Maryland, USA

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