September weather forecast
Perth Amboy, NJ

A scenic panorama of Perth Amboy Town in New Jersey, with the bright neon lights as the sun sets behind the colorful and heavy cloudy sky above
A scenic panorama of Perth Amboy Town in New Jersey, with the bright neon lights as the sun sets behind the colorful and heavy cloudy sky above

Weather in September

The first month of the autumn, September, is still a warm month in Perth Amboy, New Jersey, with an average temperature fluctuating between 61.9°F (16.6°C) and 75°F (23.9°C).

Temperature

In Perth Amboy, the average high-temperature in September marginally drops from a warm 81.3°F (27.4°C) in August to a still moderately hot 75°F (23.9°C). In Perth Amboy, in September, the average low-temperature is 61.9°F (16.6°C).

Humidity

In Perth Amboy, the average relative humidity in September is 75%.

Rainfall

The month with the least rainfall in Perth Amboy is September, when the rain falls for 12.8 days and typically collects 1.81" (46mm) of precipitation.

Snowfall

In Perth Amboy, snow does not fall in May through September.

Ocean temperature

In September, the average ocean temperature is 70.2°F (21.2°C).
Note: For swimming, a surface water temperature of 70.2°F (21.2°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In Perth Amboy, New Jersey, the average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 6:24 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:41 pm EDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

In Perth Amboy, New Jersey, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
[Resources]

FAQ

What is the temperature in September in Perth Amboy?

The average high-temperature, in September, is 75°F (23.9°C), while the average low-temperature is 61.9°F (16.6°C). in August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 86°F (30°C).

What is the average humidity in September in Perth Amboy?

In Perth Amboy, New Jersey, the average relative humidity in September is 75%.

What is the driest month in Perth Amboy?

The month with the least rainfall in Perth Amboy, New Jersey, is September, when the rain falls for 12.8 days and typically collects 1.81" (46mm) of precipitation.

How many days does it rain in September in Perth Amboy?

In Perth Amboy, in September, during 12.8 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

When it does not snow in Perth Amboy?

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

Does it snow in Perth Amboy in September?

In Perth Amboy, in September, it doesn't snow. In October, it regularly snows.

How cold is the water in September in Perth Amboy?

In September, the average ocean temperature in Perth Amboy is 70.2°F (21.2°C). Swimming in 70.2°F (21.2°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Perth Amboy have in September?

The average day length in September is 12h and 27min.

What time are sunrise and sunset in September in Perth Amboy?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:29 pm. On the last day of the month, in Perth Amboy, sunrise is at 6:52 am and sunset at 6:41 pm EDT.

How many hours of sunshine does Perth Amboy have in September?

The average sunshine duration in September in Perth Amboy is 8.7h.

What is the UV index reading in September in Perth Amboy?

In Perth Amboy, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Perth Amboy, NJ

Average temperature in September - Perth Amboy, NJ
  • Average high temperature in September: 75°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 September: 61.9°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).

[Resources]

Average pressure in September
Perth Amboy, NJ

Average pressure in September - Perth Amboy, NJ
  • Average pressure in September: 30.05"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).

[Resources]

Average wind speed in September
Perth Amboy, NJ

Average wind speed in September - Perth Amboy, NJ
  • Average wind speed in September: 7.3mph

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).

[Resources]

Average humidity in September
Perth Amboy, NJ

Average humidity in September - Perth Amboy, NJ
  • Average humidity in September: 75%

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%).

[Resources]

Average rainfall in September
Perth Amboy, NJ

Average rainfall in September - Perth Amboy, NJ
  • Average rainfall in September: 1.81"

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

[Resources]

Average rainfall days in September
Perth Amboy, NJ

Average rainfall days in September - Perth Amboy, NJ
  • Average rainfall days in September: 12.8 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).

[Resources]

Average snowfall in September
Perth Amboy, NJ

Average snowfall in September - Perth Amboy, NJ
  • Average snowfall in September: 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").

[Resources]

Average snowfall days in September
Perth Amboy, NJ

Average snowfall days in September - Perth Amboy, NJ
  • Average snowfall days in September: 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).

[Resources]

Average sea temperature in September
Perth Amboy, NJ

Average sea temperature in September - Perth Amboy, NJ
  • Average sea temperature in September: 70.1°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).

[Resources]

Average daylight in September /
Average sunshine in September
Perth Amboy, NJ

Average daylight in September / Average sunshine in September - Perth Amboy, NJ
  • Average daylight in September: 12h and 27min

The month with the longest days is June (Average daylight: 15h and 1min).
The month with the shortest days is December (Average daylight: 9h and 20min).

  • Average sunshine in September: 8h and 42min

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).

[Resources]

Average sunshine days in September
Perth Amboy, NJ

Average sunshine days in September - Perth Amboy, NJ
  • Average sunshine days in September: 15.2 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).

[Resources]

Average UV index in September
Perth Amboy, NJ

Average UV index in September - Perth Amboy, NJ
  • Average UV index in September: 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).

[Resources]

Average cloud cover in September
Perth Amboy, NJ

Average cloud cover in September - Perth Amboy, NJ
  • Average cloud cover in September: 36

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).

[Resources]

Average visibility in September
Perth Amboy, NJ

Average visibility in September - Perth Amboy, NJ
  • Average visibility in September: 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location