May weather forecast
Sayreville, NJ

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Weather in May

May, the last month of the spring in Sayreville, is an agreeable month, with an average temperature fluctuating between 68.9°F (20.5°C) and 53.8°F (12.1°C).

Temperature

As Sayreville transitions into May, a rise in the average high-temperature is observed, moving from a mild 59°F (15°C) in April to an agreeable 68.9°F (20.5°C). In Sayreville, the May nights cool down to an average low of 53.8°F (12.1°C).

Humidity

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

Rainfall

In May, the rain falls for 16.2 days. Throughout May, 2.95" (75mm) of precipitation is accumulated. Throughout the year, in Sayreville, there are 154 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

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

Daylight

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

Sunshine

In May, the average sunshine is 8.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 6 during May, leads to the following recommendations:
Deflect overexposure. Sun protection is a necessity. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Sayreville?

May temperatures vary between a high-temperature of 68.9°F (20.5°C) and a low-temperature of 53.8°F (12.1°C).

What is the most humid month in Sayreville?

The months with the highest humidity in Sayreville, New Jersey, are February, May, October and December, with an average relative humidity of 77%.

What is the average humidity in May in Sayreville?

The average relative humidity in May in Sayreville is 77%.

How many days does it rain in May in Sayreville?

In Sayreville, New Jersey, in May, it is raining for 16.2 days, with typically 2.95" (75mm) of accumulated precipitation.

When it does not snow in Sayreville?

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

Does it snow in Sayreville in May?

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

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

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

When is the sunrise / sunset in May in Sayreville?

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

How many hours of sunshine does Sayreville have in May?

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

What is the month with the highest UV index in Sayreville?

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

What is the UV index reading in May in Sayreville?

In Sayreville, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health threat from 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
Sayreville, NJ

Average temperature in May - Sayreville, NJ
  • Average high temperature in May: 68.9°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in May: 53.8°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in May
Sayreville, NJ

Average pressure in May - Sayreville, 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
Sayreville, NJ

Average wind speed in May - Sayreville, NJ
  • Average wind speed in May: 7.5mph

The windiest months (with the highest average wind speed) are January and March (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in May
Sayreville, NJ

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

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

Average rainfall in May
Sayreville, NJ

Average rainfall in May - Sayreville, NJ
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in May
Sayreville, NJ

Average rainfall days in May - Sayreville, NJ
  • Average rainfall days in May: 16.2 days

The month with the highest number of rainy days is July (17.4 days).
The months with the least rainy days are January and November (8.5 days).

Average snowfall in May
Sayreville, NJ

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

The month with the highest snowfall is March (3.82").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Sayreville, NJ

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

The month with the highest number of snowfall days is February (5.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Sayreville, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in May
Sayreville, NJ

Average sunshine days in May - Sayreville, NJ
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (10.5 days).

Average UV index in May
Sayreville, NJ

Average UV index in May - Sayreville, 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).

Average cloud cover in May
Sayreville, NJ

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

The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 31).

Average visibility in May
Sayreville, NJ

Average visibility in May - Sayreville, 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).

Sayreville, New Jersey, USA

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