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

With the beginning of May, Havre de Grace's average high-temperature sees an increase, transitioning from an enjoyable 61.7°F (16.5°C) in April to an agreeable 71.6°F (22°C). Havre de Grace observes an average low-temperature of 54.3°F (12.4°C) during May.

Humidity

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

Rainfall

In Havre de Grace, in May, during 17 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, there are 149.9 rainfall days, and 29.41" (747mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Ocean temperature

In Havre de Grace, in May, the average water temperature is 54.3°F (12.4°C).
Note: Being in 54.3°F (12.4°C) waters at 55.4°F (13°C) is discomforting, but anything below 50°F (10°C) can jeopardize breathing and induce cold shock, factoring in physical endurance.

Daylight

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

Sunshine

In May, the average sunshine in Havre de Grace is 8.7h.

UV index

The months with the highest UV index in Havre de Grace are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 6 during May leads to these instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

What are May temperatures in Havre de Grace?

In Havre de Grace, in May, 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 in Havre de Grace?

May is the most humid month in Havre de Grace, Maryland, with an average relative humidity of 80%.

What is the average humidity in May in Havre de Grace?

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

How much does it rain in Havre de Grace in May?

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

When it does not snow in Havre de Grace?

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

Does it snow in Havre de Grace in May?

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

How cold is the water in May in Havre de Grace?

In Havre de Grace, Maryland, in May, the average water temperature is 54.3°F (12.4°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 May in Havre de Grace?

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

What time are sunrise and sunset in May in Havre de Grace?

In May, on the first day of the month, sunrise is at 6:04 am and sunset at 7:58 pm. On the last day of the month, in Havre de Grace, 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?

In May, the average sunshine duration in Havre de Grace, Maryland, is 8.7h.

What are the months with the highest UV index in Havre de Grace?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Havre de Grace, Maryland.

How high is the UV index in May in Havre de Grace?

In Havre de Grace, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health risk 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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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Havre de Grace, Maryland, USA

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