May weather forecast
Rockport, ME

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Weather in May

May in Rockport is marked by a delightful sprout of colours as the city basks under the pleasant temperatures. An appreciable difference in weather patterns is observed with the high temperature leaping to 56.1°F (13.4°C). The city dries up this month with snowfall not being a factor anymore. Warmer days and increased sunshine hours create an ideal backdrop for recreational outdoor activities. The arrival of May and its pleasant offerings marks the full swing of spring in Rockport.

Temperature

Rockport's May weather shows an increase in high-temperatures, moving from April's chilly 46.9°F (8.3°C) to a refreshing 56.1°F (13.4°C). Throughout May, an average low-temperature of 45.1°F (7.3°C) is expected in Rockport.

Humidity

In Rockport, the average relative humidity in May is 82%.

Rainfall

In May, in Rockport, the rain falls for 12.7 days. Throughout May, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 122.8 rainfall days, and 13.43" (341mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Rockport.

Ocean temperature

In May, the average ocean temperature is 45.1°F (7.3°C).
Note: With an efficient thermal swimsuit, one can navigate 45.1°F (7.3°C) even if it's colder than 50°F (10°C); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 55.4°F (13°C) feels chilly.

Daylight

In May, the average length of the day is 14h and 47min.
On the first day of the month, sunrise is at 5:26 am and sunset at 7:40 pm. On the last day of May, sunrise is at 4:55 am and sunset at 8:12 pm EDT.

Sunshine

In Rockport, Maine, the average sunshine in May is 8.1h.

UV index

The average daily maximum UV index in May in Rockport is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 4 in May leads to these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Rockport in May?

Rockport in May has an average high-temperature of 56.1°F (13.4°C) and an average low-temperature of 45.1°F (7.3°C).

What is the average humidity in May in Rockport?

In Rockport, Maine, the average relative humidity in May is 82%.

How many days does it rain in May in Rockport?

In Rockport, in May, it is raining for 12.7 days, with typically 1.06" (27mm) of accumulated precipitation.

When it does not snow in Rockport?

In Rockport, snow does not fall in May through October.

Does it snow in Rockport 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 Rockport?

In Rockport, the average seawater temperature in May is 45.1°F (7.3°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.

What is the average length of the day in May in Rockport?

In May, the average day length in Rockport is 14h and 47min.

When is the sunrise / sunset in May in Rockport?

In May, on the first day of the month, sunrise is at 5:26 am and sunset at 7:40 pm. On the last day of the month, in Rockport, Maine, sunrise is at 4:55 am and sunset at 8:12 pm EDT.

How long on average sun shines in May in Rockport?

In May, the average sunshine duration is 8.1h.

How high is the UV index in May in Rockport?

In Rockport, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to 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
Rockport, ME

Average temperature in May - Rockport, ME
  • Average high temperature in May: 56.1°F

The warmest month (with the highest average high temperature) is August (70.7°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in May: 45.1°F

The months with the highest average low temperature are July and August (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

Average pressure in May
Rockport, ME

Average pressure in May - Rockport, ME
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Rockport, ME

Average wind speed in May - Rockport, ME
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).

Average humidity in May
Rockport, ME

Average humidity in May - Rockport, ME
  • Average humidity in May: 82%

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (76%).

Average rainfall in May
Rockport, ME

Average rainfall in May - Rockport, ME
  • Average rainfall in May: 1.06"

The wettest months (with the highest rainfall) are April, November and December (1.42").
The driest month (with the least rainfall) is September (0.75").

Average rainfall days in May
Rockport, ME

Average rainfall days in May - Rockport, ME
  • Average rainfall days in May: 12.7 days

The month with the highest number of rainy days is April (13.2 days).
The months with the least rainy days are January and February (6.8 days).

Average snowfall in May
Rockport, ME

Average snowfall in May - Rockport, ME
  • Average snowfall in May: 0"

The month with the highest snowfall is January (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Rockport, ME

Average snowfall days in May - Rockport, ME
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in May
Rockport, ME

Average sea temperature in May - Rockport, ME
  • Average sea temperature in May: 45.1°F

The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).

Average daylight in May /
Average sunshine in May
Rockport, ME

Average daylight in May / Average sunshine in May - Rockport, ME
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days in May
Rockport, ME

Average sunshine days in May - Rockport, ME
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is April (13.8 days).

Average UV index in May
Rockport, ME

Average UV index in May - Rockport, ME
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May
Rockport, ME

Average cloud cover in May - Rockport, ME
  • Average cloud cover in May: 47

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in May
Rockport, ME

Average visibility in May - Rockport, ME
  • 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).

Rockport, Maine, USA

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