May weather forecast and climate
Niantic, CT

Weather in May

The last month of the spring, May, is an enjoyable month in Niantic, Connecticut, with average temperature varying between 50.9°F (10.5°C) and 63.3°F (17.4°C).

Temperature

In May, the average high-temperature rises, from a cool 53.4°F (11.9°C) in April, to a comfortable 63.3°F (17.4°C). The average low-temperature, in Niantic, is 50.9°F (10.5°C).

Humidity

The average relative humidity in Niantic is 78%.

Rainfall

In May, in Niantic, the rain falls for 15.6 days. Throughout May, 2.52" (64mm) of precipitation is accumulated. Throughout the year, there are 159.8 rainfall days, and 33.07" (840mm) of precipitation is accumulated.

Snowfall

In Niantic snow does not fall in May through October.

Ocean temperature

In Niantic, in May, the average water temperature is 51.8°F (11°C).
Note: 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.

Daylight

The average length of the day in Niantic is 14.5h.

Sunshine

In Niantic, the average sunshine is 8.6h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Niantic?

In May, the average relative humidity in Niantic, Connecticut, is 78%.

How many days does it rain in May in Niantic?

In Niantic, in May, during 15.6 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

When it does not snow in Niantic?

May through October are months without snowfall in Niantic.

Does it snow in Niantic in May?

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

What is the water temperature in May in Niantic?

In Niantic, in May, the average water temperature is 51.8°F (11°C). Swimming in 51.8°F (11°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 Niantic have in May?

In May, the average length of the day is 14.5h.

How long on average sun shines in May in Niantic?

In May, the average sunshine in Niantic, Connecticut, is 8.6h.

What is the UV index intensity in May in Niantic?

In Niantic, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in May
Niantic, CT

Average temperature in May - Niantic, CT
  • Average high temperature in May: 63.3°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in May: 50.9°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in May
Niantic, CT

Average pressure in May - Niantic, CT
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in May
Niantic, CT

Average wind speed in May - Niantic, CT
  • Average wind speed in May: 9.1mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

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Average humidity in May
Niantic, CT

Average humidity in May - Niantic, CT
  • Average humidity in May: 78%

The month with the highest relative humidity is June (80%).
Months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in May
Niantic, CT

Average rainfall in May - Niantic, CT
  • Average rainfall in May: 2.52"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.65").

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Average rainfall days in May
Niantic, CT

Average rainfall days in May - Niantic, CT
  • Average rainfall days in May: 15.6 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (9.5 days).

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Average snowfall in May
Niantic, CT

Average snowfall in May - Niantic, CT
  • Average snowfall in May: 0"

The month with the highest snowfall is March (2.56").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Niantic, CT

Average snowfall days in May - Niantic, CT
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (6.8 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in May
Niantic, CT

Average sea temperature in May - Niantic, CT
  • Average sea temperature in May: 51.9°F

The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).

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Average daylight in May /
Average sunshine in May
Niantic, CT

Average daylight in May / Average sunshine in May - Niantic, CT
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.6h

The month with the most sunshine is August (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.9).

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Average sunshine days in May
Niantic, CT

Average sunshine days in May - Niantic, CT
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (12.5 days).

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Average UV index in May
Niantic, CT

Average UV index in May - Niantic, CT
  • Average UV index in May: 5

Months with the highest UV index are June, July and August (UV index 6).
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
Niantic, CT

Average cloud cover in May - Niantic, CT
  • Average cloud cover in May: 44

Months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in May
Niantic, CT

Average visibility in May - Niantic, CT
  • Average visibility in May: 6mi

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

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