May weather forecast
Sewaren, NJ

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Weather in May

May, the last month of the spring in Sewaren, is a refreshing month, with an average temperature fluctuating between 54.1°F (12.3°C) and 67.8°F (19.9°C).

Temperature

An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a mild 58.1°F (14.5°C) to a comfortable 67.8°F (19.9°C). Sewaren experiences a mean low-temperature of 54.1°F (12.3°C) during May.

Humidity

February and May, with an average relative humidity of 77%, are the most humid months.

Rainfall

In Sewaren, New Jersey, during May, the rain falls for 15.4 days and regularly aggregates up to 2.99" (76mm) of precipitation. In Sewaren, New Jersey, during the entire year, the rain falls for 157.5 days and collects up to 31.42" (798mm) of precipitation.

Snowfall

In Sewaren, New Jersey, snow does not fall in May through September.

Ocean temperature

In May, the average ocean temperature is 52.5°F (11.4°C).
Note: One needs to be cautious in 52.5°F (11.4°C) waters. 55.4°F (13°C) is already forbidding, but sub14°F (-10°C) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.

Daylight

In Sewaren, the average length of the day in May is 14h and 27min.
On the first day of the month, sunrise is at 5:54 am and sunset at 7:53 pm. On the last day of May, in Sewaren, New Jersey, sunrise is at 5:28 am and sunset at 8:21 pm EDT.

Sunshine

The average sunshine in May is 8.6h.

UV index

In Sewaren, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 5 suggests this advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Sewaren in May?

In May, the average high-temperature and low-temperature in Sewaren are 67.8°F (19.9°C) and 54.1°F (12.3°C) respectively.

What are the most humid months in Sewaren?

February and May, with an average relative humidity of 77%, are most humid months.

What is the average humidity in May in Sewaren?

The average relative humidity in May is 77%.

How much does it rain in Sewaren in May?

In Sewaren, in May, during 15.4 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

When it does not snow in Sewaren?

May through September are months without snowfall.

Does it snow in Sewaren in May?

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

How cold is the water in May in Sewaren?

In Sewaren, the average seawater temperature in May is 52.5°F (11.4°C). Swimming in 52.5°F (11.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in May in Sewaren?

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

When are sunrise and sunset in May in Sewaren?

In May, on the first day of the month, sunrise is at 5:54 am and sunset at 7:53 pm. On the last day of the month, in Sewaren, sunrise is at 5:28 am and sunset at 8:21 pm EDT.

How many hours of sunshine does Sewaren have in May?

The average sunshine duration in May is 8.6h.

What is the UV index reading in May in Sewaren?

The average daily maximum UV index in May in Sewaren, New Jersey, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's 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
Sewaren, NJ

Average temperature in May - Sewaren, NJ
  • Average high temperature in May: 67.8°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in May: 54.1°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

Average pressure in May
Sewaren, NJ

Average pressure in May - Sewaren, 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).

Average wind speed in May
Sewaren, NJ

Average wind speed in May - Sewaren, NJ
  • Average wind speed in May: 7.8mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in May
Sewaren, NJ

Average humidity in May - Sewaren, NJ
  • Average humidity in May: 77%

The months with the highest relative humidity are February and May (77%).
The months with the lowest relative humidity are March, April, August and November (73%).

Average rainfall in May
Sewaren, NJ

Average rainfall in May - Sewaren, NJ
  • Average rainfall in May: 2.99"

The wettest months (with the highest rainfall) are July and December (3.31").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in May
Sewaren, NJ

Average rainfall days in May - Sewaren, NJ
  • Average rainfall days in May: 15.4 days

The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in May
Sewaren, NJ

Average snowfall in May - Sewaren, NJ
  • Average snowfall in May: 0"

The month with the highest snowfall is March (3.39").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Sewaren, NJ

Average snowfall days in May - Sewaren, NJ
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average sea temperature in May
Sewaren, NJ

Average sea temperature in May - Sewaren, NJ
  • Average sea temperature in May: 52.5°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

Average daylight in May /
Average sunshine in May
Sewaren, NJ

Average daylight in May / Average sunshine in May - Sewaren, NJ
  • Average daylight in May: 14h and 3min

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 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).

Average sunshine days in May
Sewaren, NJ

Average sunshine days in May - Sewaren, NJ
  • Average sunshine days in May: 13.9 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (12.2 days).

Average UV index in May
Sewaren, NJ

Average UV index in May - Sewaren, NJ
  • 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).

Average cloud cover in May
Sewaren, NJ

Average cloud cover in May - Sewaren, NJ
  • Average cloud cover in May: 45

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in May
Sewaren, NJ

Average visibility in May - Sewaren, NJ
  • 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).

Sewaren, New Jersey, USA

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