May weather forecast
Stonington, ME

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Weather in May

May, the last month of the spring in Stonington, is a fresh month, with an average temperature fluctuating between 55°F (12.8°C) and 45.5°F (7.5°C).

Temperature

May sees a temperature increase, moving from a frosty 46°F (7.8°C) in April to a fresh 55°F (12.8°C). During May, the average low-temperature is a frosty 45.5°F (7.5°C).

Humidity

In May, the average relative humidity is 82%.

Rainfall

In May, in Stonington, Maine, the rain falls for 12 days. Throughout May, 1.34" (34mm) of precipitation is accumulated. Throughout the year, there are 115.5 rainfall days, and 17.95" (456mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Ocean temperature

In Stonington, in May, the average water temperature is 44.4°F (6.9°C).
Note: Diving into 44.4°F (6.9°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.

Daylight

In May, the average length of the day is 14h and 47min.
On the first day of May in Stonington, sunrise is at 5:24 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 4:54 am and sunset at 8:10 pm EDT.

Sunshine

The average sunshine in May in Stonington is 8.1h.

UV index

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

What is the usual temperature for Stonington in May?

The average high-temperature, in May, in Stonington, is 55°F (12.8°C), while the average low-temperature is 45.5°F (7.5°C).

What is the average humidity in May in Stonington?

The average relative humidity in May in Stonington is 82%.

How much does it rain in Stonington in May?

In Stonington, in May, it is raining for 12 days, with typically 1.34" (34mm) of accumulated precipitation.

When it does not snow in Stonington?

May through September are months without snowfall in Stonington, Maine.

Does it snow in Stonington 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 Stonington?

In May, the average ocean temperature in Stonington, Maine, is 44.4°F (6.9°C). Swimming in 44.4°F (6.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Stonington have in May?

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

What time are sunrise and sunset in May in Stonington?

In May, on the first day of the month, sunrise is at 5:24 am and sunset at 7:38 pm. On the last day of the month, in Stonington, Maine, sunrise is at 4:54 am and sunset at 8:10 pm EDT.

How long on average sun shines in May in Stonington?

The average sunshine duration in May in Stonington, Maine, is 8.1h.

How high is the UV index in May in Stonington?

The average daily maximum UV index in May in Stonington is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe 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
Stonington, ME

Average temperature in May - Stonington, ME
  • Average high temperature in May: 55°F

The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in May: 45.5°F

The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in May
Stonington, ME

Average pressure in May - Stonington, 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).

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Average wind speed in May
Stonington, ME

Average wind speed in May - Stonington, ME
  • Average wind speed in May: 9.6mph

The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

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Average humidity in May
Stonington, ME

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

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (76%).

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Average rainfall in May
Stonington, ME

Average rainfall in May - Stonington, ME
  • Average rainfall in May: 1.34"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is September (0.91").

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Average rainfall days in May
Stonington, ME

Average rainfall days in May - Stonington, ME
  • Average rainfall days in May: 12 days

The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in May
Stonington, ME

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

The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Stonington, ME

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

The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in May
Stonington, ME

Average sea temperature in May - Stonington, ME
  • Average sea temperature in May: 44.5°F

The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).

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

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

The month with the longest days is June (Average daylight: 15h and 24min).
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 24min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).

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Average sunshine days in May
Stonington, ME

Average sunshine days in May - Stonington, ME
  • Average sunshine days in May: 16.3 days

The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is July (15.4 days).

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Average UV index in May
Stonington, ME

Average UV index in May - Stonington, 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).

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Average cloud cover in May
Stonington, ME

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

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

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Average visibility in May
Stonington, ME

Average visibility in May - Stonington, 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).

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Stonington, Maine, USA

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