May weather forecast
West Haven, CT

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Weather in May

May marks an important transition in West Haven's yearly weather narrative. From the moderate spring climate, the city gradually warms up and moves towards the summer's characteristic heat. The lengthening days and increasing amounts of sunshine make outdoor activities ever more enticing. The month encapsulates a striking blend of warmth, humidity, and rainfall that diversifies the city's climate. However, the occasional rains failing to dampen the enthusiasm of locals for outdoor ventures.

Temperature

May brings a temperature increase in West Haven, Connecticut, with average high-temperatures moving from April's fresh 54.9°F (12.7°C) to an enjoyable 65.1°F (18.4°C). During the nights in May, West Haven observes an average low-temperature of 51.4°F (10.8°C).

Humidity

February, May and June, with an average relative humidity of 76%, are the most humid months.

Rainfall

In West Haven, in May, during 17.2 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 167.2 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Snowfall

In West Haven, Connecticut, snow does not fall in May through October.

Daylight

The average length of the day in May is 14h and 31min.
On the first day of May, sunrise is at 5:48 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:18 pm EDT.

Sunshine

The average sunshine in May in West Haven is 8.7h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the maximum UV index of 5 suggests this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What is the usual temperature for West Haven in May?

An average high-temperature, in May, in West Haven, is 65.1°F (18.4°C) and the average low-temperature is 51.4°F (10.8°C).

What is the most humid month in West Haven?

February, May and June, with an average relative humidity of 76%, are most humid months in West Haven, Connecticut.

What is the average humidity in May in West Haven?

In May, the average relative humidity in West Haven, Connecticut, is 76%.

How much does it rain in West Haven in May?

In West Haven, during May, the rain falls for 17.2 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in West Haven?

In West Haven, Connecticut, snow does not fall in May through October.

Does it snow in West Haven in May?

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

How many hours of daylight does West Haven have in May?

The average day length in May in West Haven is 14h and 31min.

What time are sunrise and sunset in May in West Haven?

In May, on the first day of the month, sunrise is at 5:48 am and sunset at 7:49 pm. On the last day of the month, in West Haven, Connecticut, sunrise is at 5:21 am and sunset at 8:18 pm EDT.

How many hours of sunshine does West Haven have in May?

In West Haven, the average sunshine duration in May is 8.7h.

What is the UV index intensity in May in West Haven?

The average daily maximum UV index in May in West Haven is 5. A UV Index estimate of 3 to 5 represents a medium health risk 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
West Haven, CT

Average temperature in May - West Haven, CT
  • Average high temperature in May: 65.1°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in May: 51.4°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 (25.5°F).

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Average pressure in May
West Haven, CT

Average pressure in May - West Haven, CT
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
West Haven, CT

Average wind speed in May - West Haven, CT
  • Average wind speed in May: 7.8mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in May
West Haven, CT

Average humidity in May - West Haven, CT
  • Average humidity in May: 76%

The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are April and November (72%).

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Average rainfall in May
West Haven, CT

Average rainfall in May - West Haven, CT
  • Average rainfall in May: 2.76"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (2.24").

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Average rainfall days in May
West Haven, CT

Average rainfall days in May - West Haven, CT
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9.4 days).

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Average snowfall in May
West Haven, CT

Average snowfall in May - West Haven, CT
  • Average snowfall in May: 0"

The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
West Haven, CT

Average snowfall days in May - West Haven, CT
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
West Haven, CT

Average daylight in May / Average sunshine in May - West Haven, 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 18min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in May
West Haven, CT

Average sunshine days in May - West Haven, CT
  • Average sunshine days in May: 11.9 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is August (11.3 days).

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Average UV index in May
West Haven, CT

Average UV index in May - West Haven, 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
West Haven, CT

Average cloud cover in May - West Haven, CT
  • Average cloud cover in May: 44

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in May
West Haven, CT

Average visibility in May - West Haven, 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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West Haven, Connecticut, USA

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