May weather forecast
New Brunswick, NJ

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An aerial panorama of the city of Brunswick, New Jersey, seen with its deep tree cover, a large river, and bridges over the river
An aerial panorama of the city of Brunswick, New Jersey, seen with its deep tree cover, a large river, and bridges over the river

Weather in May

May’s arrival in New Brunswick heralds the genuine start of the warmer season. The temperature consistently ascends while rainfall becomes frequent but less intense compared to prior months, reducing the possibility of sudden showers. Sunshine dominates most of the day, outlasting the clouds. Relatively less windy days offer added comfort for outdoor enthusiasts and picnic seekers. With temperatures soaring from 53.2°F (11.8°C) to 69.6°F (20.9°C) and rainfall as high as 2.8" (71mm); the city not only escapes the clutches of spring but also begins teetering on the brink of summer, directly contrasting the weather conditions experienced only four months ago in January.

Temperature

In New Brunswick, the average high-temperature in May rises, from a mild 59.5°F (15.3°C) in April, to an agreeable 69.6°F (20.9°C). New Brunswick, during the nights of May, experiences an average temperature drop to a cool 53.2°F (11.8°C).

Humidity

In New Brunswick, the average relative humidity in May is 76%.

Rainfall

In New Brunswick, in May, during 16.3 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In New Brunswick, New Jersey, during the entire year, the rain falls for 149.4 days and collects up to 28.43" (722mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows in New Brunswick, New Jersey. During 0.1 snowfall days, in May, New Brunswick aggregates 0.2" (5mm) of snow. Throughout the year, in New Brunswick, there are 18.3 snowfall days, and 8.46" (215mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 27min.
On the first day of May, sunrise is at 5:55 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 8:21 pm EDT.

Sunshine

In New Brunswick, the average sunshine in May is 8.4h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Enhance your sun protection with tightly woven, yet airy clothing. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

What is the usual temperature for New Brunswick in May?

The average high-temperature and low-temperature in New Brunswick, New Jersey, during May are 69.6°F (20.9°C) and 53.2°F (11.8°C) respectively.

What is the average humidity in May in New Brunswick?

In May, the average relative humidity in New Brunswick is 76%.

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

In New Brunswick, during May, the rain falls for 16.3 days and regularly aggregates up to 2.8" (71mm) of precipitation.

What is the last month it snows in New Brunswick?

May is the last month it regularly snows in New Brunswick, New Jersey. During 0.1 snowfall days, in May, New Brunswick aggregates 0.2" (5mm) of snow.

How many hours of daylight does New Brunswick have in May?

The average day length in May is 14h and 27min.

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

On the first day of May in New Brunswick, sunrise is at 5:55 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 8:21 pm EDT.

How many hours of sunshine does New Brunswick have in May?

In May, the average sunshine duration in New Brunswick, New Jersey, is 8.4h.

What is the month with the highest UV index in New Brunswick?

The months with the highest UV index in New Brunswick are May through August, with an average maximum UV index of 6.

What is the UV index intensity in May in New Brunswick?

In New Brunswick, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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
New Brunswick, NJ

Average temperature in May - New Brunswick, NJ
  • Average high temperature in May: 69.6°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in May: 53.2°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in May
New Brunswick, NJ

Average pressure in May - New Brunswick, NJ
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
New Brunswick, NJ

Average wind speed in May - New Brunswick, NJ
  • Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

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Average humidity in May
New Brunswick, NJ

Average humidity in May - New Brunswick, NJ
  • Average humidity in May: 76%

The months with the highest relative humidity are February, October and December (77%).
The months with the lowest relative humidity are April and August (72%).

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Average rainfall in May
New Brunswick, NJ

Average rainfall in May - New Brunswick, NJ
  • Average rainfall in May: 2.8"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in May
New Brunswick, NJ

Average rainfall days in May - New Brunswick, NJ
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in May
New Brunswick, NJ

Average snowfall in May - New Brunswick, NJ
  • Average snowfall in May: 0.2"

The month with the highest snowfall is March (3.5").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
New Brunswick, NJ

Average snowfall days in May - New Brunswick, NJ
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
New Brunswick, NJ

Average daylight in May / Average sunshine in May - New Brunswick, NJ
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in May
New Brunswick, NJ

Average sunshine days in May - New Brunswick, NJ
  • Average sunshine days in May: 12.4 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (11.1 days).

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Average UV index in May
New Brunswick, NJ

Average UV index in May - New Brunswick, NJ
  • Average UV index in May: 6

The months with the highest UV index are May, 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 Brunswick, NJ

Average cloud cover in May - New Brunswick, NJ
  • Average cloud cover in May: 47

The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in May
New Brunswick, NJ

Average visibility in May - New Brunswick, NJ
  • Average visibility in May: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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New Brunswick, New Jersey, USA

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