September weather forecast
Brielle, NJ

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Weather in September

September, the first month of the autumn in Brielle, is also an agreeable month, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 65.1°F (18.4°C).

Temperature

Brielle records a mild change in average high-temperature during September, easing from a warm 78.6°F (25.9°C) in August to a pleasant 72.5°F (22.5°C). Nighttime temperature reflects an average dip to an enjoyable 65.1°F (18.4°C) in September, subtly cooler than its daytime highs.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Brielle, during September, the rain falls for 13 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Brielle, during the entire year, the rain falls for 158.1 days and collects up to 34.13" (867mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September, sunrise is at 6:24 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm EDT.

Sunshine

In September, the average sunshine in Brielle is 9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 5 during September leads to these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

The high-temperature during September is 72.5°F (22.5°C) and the low-temperature is 65.1°F (18.4°C).

What is the average humidity in September?

The average relative humidity in September is 77%.

How many days does it rain in September?

In September, the rain falls for 13 days. Throughout September, 2.17" (55mm) of precipitation is accumulated.

When it does not snow?

In Brielle, snow does not fall in May through October.

How many hours of daylight does Brielle have in September?

The average day length in September is 12h and 26min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:24 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:39 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9h.

What is the UV index reading in September?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe 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 September
Brielle, NJ

Average temperature in September - Brielle, NJ
  • Average high temperature in September: 72.5°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 65.1°F

The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

Average pressure in September
Brielle, NJ

Average pressure in September - Brielle, 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
Brielle, NJ

Average wind speed in September - Brielle, NJ
  • Average wind speed in September: 9.8mph

The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

Average humidity in September
Brielle, NJ

Average humidity in September - Brielle, NJ
  • Average humidity in September: 77%

The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in September
Brielle, NJ

Average rainfall in September - Brielle, NJ
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is July (3.78").
The driest month (with the least rainfall) is January (2.05").

Average rainfall days in September
Brielle, NJ

Average rainfall days in September - Brielle, NJ
  • Average rainfall days in September: 13 days

The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in September
Brielle, NJ

Average snowfall in September - Brielle, NJ
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Brielle, NJ

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

The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Brielle, NJ

Average daylight in September / Average sunshine in September - Brielle, 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 24min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in September
Brielle, NJ

Average sunshine days in September - Brielle, NJ
  • Average sunshine days in September: 15.4 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in September
Brielle, NJ

Average UV index in September - Brielle, 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, November and December (UV index 2).

Average cloud cover in September
Brielle, NJ

Average cloud cover in September - Brielle, NJ
  • Average cloud cover in September: 33

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September
Brielle, NJ

Average visibility in September - Brielle, 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).

Brielle, New Jersey, USA

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