September weather forecast and climate
Red Bank, NJ

Weather in September

September, the first month of the autumn, in Red Bank, is still a warm month, with average temperature ranging between max 73.8°F (23.2°C) and min 64.6°F (18.1°C).

Temperature

In Red Bank, the average high-temperature slightly decreases, from 79.5°F (26.4°C) in August, to a still warm 73.8°F (23.2°C). The average low-temperature,, is 64.6°F (18.1°C).

Humidity

In Red Bank, the average relative humidity is 76%.

Rainfall

In Red Bank, during 11.5 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, there are 125.1 rainfall days, and 12.64" (321mm) of precipitation is accumulated.

Snowfall

April through September and November are months without snowfall.

Ocean temperature

In Red Bank, the average seawater temperature is 70.3°F (21.3°C).
Note: 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).

Daylight

In Red Bank, the average length of the day is 12.4h.

Sunshine

In Red Bank, the average sunshine is 9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the average humidity in September in Red Bank?

The average relative humidity in September is 76%.

How many days does it rain in September in Red Bank?

In Red Bank, New Jersey, in September, during 11.5 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

When it does not snow in Red Bank?

April through September and November are months without snowfall in Red Bank.

Does it snow in Red Bank in September?

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

How cold is the water in September in Red Bank?

In Red Bank, the average seawater temperature in September is 70.3°F (21.3°C). For most, swimming in 70.3°F (21.3°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).

How many hours of daylight does Red Bank have in September?

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

How long on average sun shines in September in Red Bank?

The average sunshine in September is 9h.

What is the UV index intensity in September in Red Bank?

In Red Bank, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Red Bank, NJ

Average temperature in September - Red Bank, NJ
  • Average high temperature in September: 73.8°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in September: 64.6°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

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Average pressure in September
Red Bank, NJ

Average pressure in September - Red Bank, NJ
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
Red Bank, NJ

Average wind speed in September - Red Bank, NJ
  • Average wind speed in September: 9.1mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).

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Average humidity in September
Red Bank, NJ

Average humidity in September - Red Bank, NJ
  • Average humidity in September: 76%

Months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is November (73%).

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Average rainfall in September
Red Bank, NJ

Average rainfall in September - Red Bank, NJ
  • Average rainfall in September: 0.87"

The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is January (0.63").

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Average rainfall days in September
Red Bank, NJ

Average rainfall days in September - Red Bank, NJ
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (6.5 days).

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Average snowfall in September
Red Bank, NJ

Average snowfall in September - Red Bank, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.47").
Months with the least snowfall are April, May, June, July, August, September and November (0").

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Average snowfall days in September
Red Bank, NJ

Average snowfall days in September - Red Bank, NJ
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.9 days).
Months with the least snowfall days are April, May, June, July, August and September (0 days).

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Average sea temperature in September
Red Bank, NJ

Average sea temperature in September - Red Bank, 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).

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Average daylight in September /
Average sunshine in September
Red Bank, NJ

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

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 9h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.9h).

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Average sunshine days in September
Red Bank, NJ

Average sunshine days in September - Red Bank, NJ
  • Average sunshine days in September: 16.7 days

The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is July (13 days).

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Average UV index in September
Red Bank, NJ

Average UV index in September - Red Bank, NJ
  • Average UV index in September: 5

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

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Average cloud cover in September
Red Bank, NJ

Average cloud cover in September - Red Bank, NJ
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 47).
Months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in September
Red Bank, NJ

Average visibility in September - Red Bank, NJ
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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