May weather forecast
New London, CT

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A part of the city of New London, Connecticut, with intricate buildings overlooking the calm water
A part of the city of New London, Connecticut, with intricate buildings overlooking the calm water

Weather in May

May sees the city of New London, Connecticut transition smoothly from spring to the early advent of summer. A greater amount of daylight brings a relaxed ambiance, perfect for outdoor pursuits. With the temperature fluctuating between 50.9°F (10.5°C) to 63.3°F (17.4°C), no snowfall is recorded during this month. Refreshing, light breezes uplift the atmosphere, making May an ideal month for local festivals or weekend getaways. The subtle beauty of the landscape against the warmth of the sun helps create delightful memories during this month.

Temperature

In New London, the average high-temperature in May increases from a fresh 53.4°F (11.9°C) in April to an enjoyable 63.3°F (17.4°C). An average nighttime temperature of 50.9°F (10.5°C) is observed in New London during May.

Humidity

The average relative humidity in May is 78%.

Rainfall

In May, in New London, 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 New London, snow does not fall in May through October.

Ocean temperature

In New London, the average seawater temperature in May is 51.8°F (11°C).
Note: Beware of 51.8°F (11°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.

Daylight

The average length of the day in May in New London is 14h and 31min.
On the first day of May, sunrise is at 5:44 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:14 pm EDT.

Sunshine

The average sunshine in May in New London is 8.6h.

UV index

The average daily maximum UV index in May in New London is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What is the usual temperature for New London in May?

In May, the average high-temperature and low-temperature in New London are 63.3°F (17.4°C) and 50.9°F (10.5°C) respectively.

What is the average humidity in May in New London?

The average relative humidity in May is 78%.

How many days does it rain in May in New London?

In New London, during May, the rain falls for 15.6 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow in New London?

May through October are months without snowfall in New London.

Does it snow in New London in May?

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

What is the water temperature in May in New London?

In New London, Connecticut, the average seawater temperature in May 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.

What is the average length of the day in May in New London?

The average day length in May in New London, Connecticut, is 14h and 31min.

What time are sunrise and sunset in May in New London?

On the first day of May in New London, sunrise is at 5:44 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:14 pm EDT.

How long on average sun shines in May in New London?

In New London, the average sunshine duration in May is 8.6h.

What is the UV index reading in May in New London?

In New London, Connecticut, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
53.4°F 11.9°C
63.3°F 17.4°C
71.4°F 21.9°C
Average low temperature
42.4°F 5.8°C
50.9°F 10.5°C
59°F 15°C
Average pressure
29.98" 761mmHg
30.01" 762mmHg
29.93" 760mmHg
Average wind speed
10.6mph 17.1km/h
9.1mph 14.6km/h
8.1mph 13km/h
Average max. wind speed
11.4mph 18.3km/h
9.8mph 15.8km/h
8.8mph 14.2km/h
Average wind speed gusts
17mph 27.4km/h
14.9mph 24km/h
13.4mph 21.6km/h
Average humidity
74%
78%
80%
Average rainfall
3.11" 79mm
2.52" 64mm
2.72" 69mm
Average rainfall days
14.9
15.6
15
Average snowfall
0.08" 2mm
0" 0mm
0" 0mm
Average snowfall days
0.7
0.1
0
Average sea temperature
44.4°F 6.9°C
51.9°F 11.1°C
62°F 16.7°C
Average daylight
13h 2min
14h 3min
15h 1min
Average sunshine
8h 2min
8h 4min
9h 3min
Average sunshine days
13.8
13.4
12.8
Average UV index
3
5
6
Average cloud cover
44%
44%
37%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in May
New London, CT

Average temperature in May - New London, 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
New London, CT

Average pressure in May - New London, CT
  • Average pressure in May: 30.01"Hg

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

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Average wind speed in May
New London, CT

Average wind speed in May - New London, 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
New London, CT

Average humidity in May - New London, CT
  • Average humidity in May: 78%

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

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Average rainfall in May
New London, CT

Average rainfall in May - New London, 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
New London, CT

Average rainfall days in May - New London, 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
New London, CT

Average snowfall in May - New London, CT
  • Average snowfall in May: 0"

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

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Average snowfall days in May
New London, CT

Average snowfall days in May - New London, CT
  • Average snowfall days in May: 0.1 days

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

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Average sea temperature in May
New London, CT

Average sea temperature in May - New London, 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
New London, CT

Average daylight in May / Average sunshine in May - New London, CT
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

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Average sunshine days in May
New London, CT

Average sunshine days in May - New London, 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
New London, CT

Average UV index in May - New London, CT
  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
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
New London, CT

Average cloud cover in May - New London, CT
  • Average cloud cover in May: 44

The 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
New London, CT

Average visibility in May - New London, CT
  • 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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New London, Connecticut, USA

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