May weather forecast
Herald Harbor, MD

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Weather in May

The last month of the spring, May, is an agreeable month in Herald Harbor, Maryland, with an average temperature varying between 72.1°F (22.3°C) and 57.2°F (14°C).

Temperature

May signals a shift in the average high-temperature, moving from April's enjoyable 62.8°F (17.1°C) to an agreeable 72.1°F (22.3°C). Herald Harbor's average low-temperature is measured at a mild 57.2°F (14°C) during May.

Humidity

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

Rainfall

In Herald Harbor, in May, during 17.5 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Herald Harbor, during the entire year, the rain falls for 155.7 days and collects up to 31.22" (793mm) of precipitation.

Snowfall

In Herald Harbor, snow does not fall in May through October.

Ocean temperature

In Herald Harbor, Maryland, in May, the average water temperature is 55.9°F (13.3°C).
Note: While a brief time in 55.9°F (13.3°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.

Daylight

In May, the average length of the day in Herald Harbor is 14h and 20min.
On the first day of the month, sunrise is at 6:07 am and sunset at 7:59 pm. On the last day of May, sunrise is at 5:42 am and sunset at 8:25 pm EDT.

Sunshine

In Herald Harbor, the average sunshine in May is 9.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 in May translates into these instructions:
Take precautions against overexposure. Protection against sun damage is needed. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

May temperatures vary between a high-temperature of 72.1°F (22.3°C) and a low-temperature of 57.2°F (14°C).

What is the most humid month?

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

What is the average humidity in May?

In May, the average relative humidity is 78%.

How much does it rain in May?

In Herald Harbor, during May, the rain falls for 17.5 days and regularly aggregates up to 2.87" (73mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

Does it snow in May?

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

How cold is the water in May?

In Herald Harbor, in May, the average water temperature is 55.9°F (13.3°C). Swimming in 55.9°F (13.3°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.

What is the average length of the day in May in Herald Harbor?

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

When are sunrise and sunset in May in Herald Harbor?

On the first day of May, sunrise is at 6:07 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:25 pm EDT.

How many hours of sunshine does Herald Harbor have in May?

The average sunshine duration in May is 9.1h.

When is 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?

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
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
Herald Harbor, MD

Average temperature in May - Herald Harbor, MD
  • Average high temperature in May: 72.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in May: 57.2°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in May
Herald Harbor, MD

Average pressure in May - Herald Harbor, MD
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Herald Harbor, MD

Average wind speed in May - Herald Harbor, MD
  • Average wind speed in May: 7.5mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in May
Herald Harbor, MD

Average humidity in May - Herald Harbor, 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%).

Average rainfall in May
Herald Harbor, MD

Average rainfall in May - Herald Harbor, MD
  • Average rainfall in May: 2.87"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in May
Herald Harbor, MD

Average rainfall days in May - Herald Harbor, MD
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in May
Herald Harbor, MD

Average snowfall in May - Herald Harbor, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Herald Harbor, MD

Average snowfall days in May - Herald Harbor, MD
  • Average snowfall days in May: 0 days

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

Average sea temperature in May
Herald Harbor, MD

Average sea temperature in May - Herald Harbor, MD
  • Average sea temperature in May: 55.9°F

The best month for swimming (with the highest average sea temperature) is August (77.5°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).

Average daylight in May /
Average sunshine in May
Herald Harbor, MD

Average daylight in May / Average sunshine in May - Herald Harbor, 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
Herald Harbor, MD

Average sunshine days in May - Herald Harbor, MD
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in May
Herald Harbor, MD

Average UV index in May - Herald Harbor, 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, November and December (UV index 2).

Average cloud cover in May
Herald Harbor, MD

Average cloud cover in May - Herald Harbor, MD
  • Average cloud cover in May: 42

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).

Average visibility in May
Herald Harbor, MD

Average visibility in May - Herald Harbor, 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).

Herald Harbor, Maryland, USA

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