September weather forecast
Cliffwood Beach, NJ

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Weather in September

The first month of the autumn, September, is still a warm month in Cliffwood Beach, New Jersey, with an average temperature fluctuating between 74.5°F (23.6°C) and 62.4°F (16.9°C).

Temperature

In September, the meteorological conditions change slightly, with the average high-temperature moving from 81.1°F (27.3°C) in August to a still moderately hot 74.5°F (23.6°C). Cliffwood Beach experiences an average low-temperature of 62.4°F (16.9°C) in month of September.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Cliffwood Beach, New Jersey, in September, it is raining for 13.5 days, with typically 1.77" (45mm) of accumulated precipitation. In Cliffwood Beach, during the entire year, the rain falls for 153 days and collects up to 28.7" (729mm) of precipitation.

Snowfall

In Cliffwood Beach, snow does not fall in May through October.

Ocean temperature

In September, the average ocean temperature is 70.3°F (21.3°C).
Note: Swimming is not a pleasant activity for most when the water temperature is 70.3°F (21.3°C). As the water temperature drops from 69.8°F (21°C) to 59°F (15°C), breathing becomes more difficult to control.

Daylight

In Cliffwood Beach, 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 7:28 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm EDT.

Sunshine

In Cliffwood Beach, New Jersey, the average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index in Cliffwood Beach is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Alert! Sand and water increase UV exposure due to their reflective properties.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Cliffwood Beach?

The high-temperature in Cliffwood Beach, New Jersey, during September is 74.5°F (23.6°C) and the low-temperature is 62.4°F (16.9°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 86°F (30°C).

What is the average humidity in September in Cliffwood Beach?

In Cliffwood Beach, the average relative humidity in September is 75%.

How much does it rain in Cliffwood Beach in September?

In Cliffwood Beach, during September, the rain falls for 13.5 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Cliffwood Beach?

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

How cold is the water in September in Cliffwood Beach?

In Cliffwood Beach, the average seawater temperature in September is 70.3°F (21.3°C). Swimming in 70.3°F (21.3°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 Cliffwood Beach have in September?

In September, the average day length in Cliffwood Beach is 12h and 27min.

When is the sunrise / sunset in September in Cliffwood Beach?

On the first day of September in Cliffwood Beach, sunrise is at 6:24 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:40 pm EDT.

How many hours of sunshine does Cliffwood Beach have in September?

The average sunshine duration in September in Cliffwood Beach, New Jersey, is 8.9h.

How high is the UV index in September in Cliffwood Beach?

In September, the average daily maximum UV index in Cliffwood Beach, New Jersey, is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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 September
Cliffwood Beach, NJ

Average temperature in September - Cliffwood Beach, NJ
  • Average high temperature in September: 74.5°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in September: 62.4°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 (26.4°F).

Average pressure in September
Cliffwood Beach, NJ

Average pressure in September - Cliffwood Beach, 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).

Average wind speed in September
Cliffwood Beach, NJ

Average wind speed in September - Cliffwood Beach, NJ
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in September
Cliffwood Beach, NJ

Average humidity in September - Cliffwood Beach, NJ
  • Average humidity in September: 75%

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

Average rainfall in September
Cliffwood Beach, NJ

Average rainfall in September - Cliffwood Beach, NJ
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is July (3.43").
The driest month (with the least rainfall) is January (1.61").

Average rainfall days in September
Cliffwood Beach, NJ

Average rainfall days in September - Cliffwood Beach, NJ
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in September
Cliffwood Beach, NJ

Average snowfall in September - Cliffwood Beach, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Cliffwood Beach, NJ

Average snowfall days in September - Cliffwood Beach, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September
Cliffwood Beach, NJ

Average sea temperature in September - Cliffwood Beach, NJ
  • Average sea temperature in September: 70.4°F

The best month for swimming (with the highest average sea temperature) is August (74.8°F).
The coldest month (with the lowest average sea temperature) is February (40.4°F).

Average daylight in September /
Average sunshine in September
Cliffwood Beach, NJ

Average daylight in September / Average sunshine in September - Cliffwood Beach, NJ
  • Average daylight in September: 12h 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 September: 8h and 5min

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 48min).

Average sunshine days in September
Cliffwood Beach, NJ

Average sunshine days in September - Cliffwood Beach, NJ
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (11.5 days).

Average UV index in September
Cliffwood Beach, NJ

Average UV index in September - Cliffwood Beach, 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).

Average cloud cover in September
Cliffwood Beach, NJ

Average cloud cover in September - Cliffwood Beach, NJ
  • Average cloud cover in September: 35

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in September
Cliffwood Beach, NJ

Average visibility in September - Cliffwood Beach, 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).

Cliffwood Beach, New Jersey, USA

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