September weather forecast and climate
Rockaway, NJ

September, the first month of the autumn, in Rockaway, is still a warm month, with average temperature ranging between min 55.6°F (13.1°C) and max 73.9°F (23.3°C).

Temperature

In Rockaway, the average high-temperature marginally drops, from 81.1°F (27.3°C) in August, to a still warm 73.9°F (23.3°C). In Rockaway, the average low-temperature is 55.6°F (13.1°C).

Humidity

In Rockaway, the average relative humidity in September is 79%.

Rainfall

The month with the least rainfall in Rockaway is September when the rain falls for 6.3 days and typically collects 0.16" (4mm) of precipitation.

Snowfall

June through September are months without snowfall in Rockaway.

Ocean temperature

In Rockaway, in September, the average water temperature is 70.2°F (21.2°C).
Note: For most, swimming in 70.2°F (21.2°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

The average length of the day in Rockaway is 12.4h.

Sunshine

In Rockaway, the average sunshine is 8.4h.

UV index

In Rockaway, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Rockaway?

In Rockaway, in September, the average high-temperature is 73.9°F (23.3°C), and the average low-temperature is 55.6°F (13.1°C).

What is the average humidity in September in Rockaway?

In Rockaway, New Jersey, the average relative humidity in September is 79%.

How many days does it rain in September in Rockaway?

In Rockaway, during September, the rain falls for 6.3 days and regularly aggregates up to 0.16" (4mm) of precipitation.

What is the driest month in Rockaway?

The month with the least rainfall in Rockaway is September when the rain falls for 6.3 days and typically collects 0.16" (4mm) of precipitation.

Does it snow in Rockaway in September?

In Rockaway, New Jersey, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Rockaway?

June through September are months without snowfall.

What is the ocean temperature in September in Rockaway?

In Rockaway, the average seawater temperature in September 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 Rockaway have in September?

In Rockaway, the average length of the day in September is 12.4h.

How long on average sun shines in September in Rockaway?

In Rockaway, the average sunshine in September is 8.4h.

How high is the UV index in September in Rockaway?

The average daily maximum UV index in September in Rockaway is 4. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in September - Rockaway, NJ
  • Average high temperature in September: 23.3°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is January (1.3°C).

  • Average low temperature in September: 13.1°C

The month with the highest average low temperature is July (17.8°C).
The coldest month (with the lowest average low temperature) is January (-6.2°C).

Average pressure in September - Rockaway, NJ
  • Average pressure in September: 1017.8mbar

The month with the highest atmospheric pressure is November (1019.6mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in September - Rockaway, NJ
  • Average wind speed in September: 8.9km/h

The windiest month (with the highest average wind speed) is March (13.2km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).

Average humidity in September - Rockaway, NJ
  • Average humidity in September: 79%

Months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (75%).

Average rainfall in September - Rockaway, NJ
  • Average rainfall in September: 4mm

The wettest month (with the highest rainfall) is July (20mm).
The driest month (with the least rainfall) is September (4mm).

Average rainfall days in September - Rockaway, NJ
  • Average rainfall days in September: 6.3 days

The month with the highest number of rainy days is July (9.5 days).
The month with the least rainy days is February (4 days).

Average snowfall in September - Rockaway, NJ
  • Average snowfall in September: 0mm

The month with the highest snowfall is March (20mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September - Rockaway, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in September - Rockaway, NJ
  • Average sea temperature in September: 21.2°C

The best month for swimming (with the highest average sea temperature) is August (23.5°C).
The coldest month (with the lowest average sea temperature) is February (4°C).

Average daylight in September / Average sunshine in September - Rockaway, NJ
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.4h).

Average sunshine days in September - Rockaway, NJ
  • Average sunshine days in September: 21.8 days

The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (18.3 days).

Average UV index in September - Rockaway, NJ
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September - Rockaway, NJ
  • Average cloud cover in September: 42

Months with the most cloud cover are February and March (Cloud cover 51).
Months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in September - Rockaway, NJ
  • Average visibility in September: 8km

Months with the highest visibility are January, March, April, November and December (9km).
Months with the lowest visibility are February, May, June, July, August, September and October (8km).