May weather forecast
Havre de Grace, MD

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Weather in May

May serves as the threshold between spring and summer, retaining some of the cooling springtime showers, while ushering in the warmth of summer. With an evident increase in temperature, this month experiences the full bloom of the town's flora, the green landscape a picturesque homage to spring. May's weather credentials rest on the month's high humidity levels, peaking at 80%, causing ample cloud cover and rainfall. The longer daylight hours provide ample opportunities for outdoor activities as the town undergoes a distinct transformation. By the end of May, one can feel the unmistakable touch of summer in the air.

Temperature

May sees a temperature increase, moving from a comfortable 61.7°F (16.5°C) in April to a pleasant 71.6°F (22°C). Havre de Grace experiences an average nighttime temperature of 54.3°F (12.4°C) in the month of May.

Humidity

The most humid month is May, with an average relative humidity of 80%.

Rainfall

In May, the rain falls for 17 days. Throughout May, 2.8" (71mm) of precipitation is accumulated. In Havre de Grace, during the entire year, the rain falls for 149.9 days and collects up to 29.41" (747mm) of precipitation.

Snowfall

In Havre de Grace, snow does not fall in May through October.

Ocean temperature

In May, the average ocean temperature is 54.3°F (12.4°C).
Note: Swimming in 54.3°F (12.4°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity.

Daylight

In Havre de Grace, the average length of the day in May is 14h and 22min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:58 pm. On the last day of May, sunrise is at 5:38 am and sunset at 8:25 pm EDT.

Sunshine

The average sunshine in May is 8.7h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during May leads to these advisories:
Inhibit overexposure. Warding off sun damage is of utmost importance. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

In May, in Havre de Grace, the average high-temperature is 71.6°F (22°C), and the average low-temperature is 54.3°F (12.4°C).

What is the most humid month?

With an average relative humidity of 80%, May is the most humid month.

What is the average humidity in May?

In Havre de Grace, the average relative humidity in May is 80%.

How much does it rain in May?

In Havre de Grace, in May, during 17 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When it does not snow?

In Havre de Grace, snow does not fall in May through October.

Does it snow in May?

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

How cold is the water in May?

In Havre de Grace, Maryland, the average seawater temperature in May is 54.3°F (12.4°C). Swimming in 54.3°F (12.4°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 Havre de Grace?

In Havre de Grace, the average day length in May is 14h and 22min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:04 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:25 pm EDT.

How many hours of sunshine does Havre de Grace have in May?

The average sunshine duration in May is 8.7h.

What are the months with the highest UV index?

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

How high is the UV index in May?

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
61.7°F 16.5°C
71.6°F 22°C
79.3°F 26.3°C
Average low temperature
45°F 7.2°C
54.3°F 12.4°C
62.4°F 16.9°C
Average pressure
29.99" 762mmHg
30.01" 762mmHg
29.94" 760mmHg
Average wind speed
8.8mph 14.2km/h
6.9mph 11.1km/h
6.4mph 10.3km/h
Average max. wind speed
9.6mph 15.4km/h
7.5mph 12.1km/h
7mph 11.3km/h
Average wind speed gusts
13.7mph 22km/h
10.9mph 17.5km/h
10.3mph 16.6km/h
Average humidity
74%
80%
79%
Average rainfall
2.24" 57mm
2.8" 71mm
2.6" 66mm
Average rainfall days
14.3
17
15
Average snowfall
0.04" 1mm
0" 0mm
0" 0mm
Average snowfall days
0.1
0
0
Average sea temperature
48.6°F 9.2°C
54.4°F 12.4°C
67°F 19.4°C
Average daylight
13h 2min
14h 2min
14h 5min
Average sunshine
8h 4min
8h 4min
10h 0min
Average sunshine days
14.2
11.1
12.4
Average UV index
4
6
6
Average cloud cover
42%
45%
35%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in May
Havre de Grace, MD

Average temperature in May - Havre de Grace, MD
  • Average high temperature in May: 71.6°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 (37.6°F).

  • Average low temperature in May: 54.3°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).

Average pressure in May
Havre de Grace, MD

Average pressure in May - Havre de Grace, 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
Havre de Grace, MD

Average wind speed in May - Havre de Grace, MD
  • Average wind speed in May: 6.9mph

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).

Average humidity in May
Havre de Grace, MD

Average humidity in May - Havre de Grace, MD
  • Average humidity in May: 80%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (74%).

Average rainfall in May
Havre de Grace, MD

Average rainfall in May - Havre de Grace, MD
  • Average rainfall in May: 2.8"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in May
Havre de Grace, MD

Average rainfall days in May - Havre de Grace, MD
  • Average rainfall days in May: 17 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in May
Havre de Grace, MD

Average snowfall in May - Havre de Grace, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Havre de Grace, MD

Average snowfall days in May - Havre de Grace, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in May
Havre de Grace, MD

Average sea temperature in May - Havre de Grace, MD
  • Average sea temperature in May: 54.4°F

The best month for swimming (with the highest average sea temperature) is August (76.6°F).
The coldest month (with the lowest average sea temperature) is February (42.5°F).

Average daylight in May /
Average sunshine in May
Havre de Grace, MD

Average daylight in May / Average sunshine in May - Havre de Grace, 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 24min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in May
Havre de Grace, MD

Average sunshine days in May - Havre de Grace, MD
  • Average sunshine days in May: 11.1 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in May
Havre de Grace, MD

Average UV index in May - Havre de Grace, 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, November and December (UV index 2).

Average cloud cover in May
Havre de Grace, MD

Average cloud cover in May - Havre de Grace, MD
  • Average cloud cover in May: 45

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).

Average visibility in May
Havre de Grace, MD

Average visibility in May - Havre de Grace, MD
  • Average visibility in May: 5mi

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

Havre de Grace, Maryland, USA

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