September weather forecastRockaway, NJ
September
Weather in September
The first month of the autumn, September, is still a warm month in Rockaway, New Jersey, with temperature in the range of an average high of 73.9°F (23.3°C) and an average low of 55.6°F (13.1°C).Temperature
September brings a slight decrease in temperature, down from 81.1°F (27.3°C) in August to a still warm 73.9°F (23.3°C). Throughout September, Rockaway's nights cool down to an average of 55.6°F (13.1°C).Humidity
In Rockaway, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 6.3 days and accumulates 0.16" (4mm) of precipitation.Snowfall
In Rockaway, snow does not fall in June through September.Ocean temperature
In September, the average ocean temperature is 70.2°F (21.2°C).Note: Swimming is not an enjoyable activity for the majority when the water is at 70.2°F (21.2°C). The difficulty of controlling breathing increases as the temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
In September, the average sunshine in Rockaway is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rockaway, NJ
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in September
Rockaway, NJ
- Average pressure in September: 30.06"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
Rockaway, NJ
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Rockaway, NJ
- Average humidity in September: 79%
The 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: 0.16"
The wettest month (with the highest rainfall) is July (0.79").
The driest month (with the least rainfall) is September (0.16").
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: 0"
The month with the highest snowfall is March (0.79").
The months with the least snowfall are June, July, August and September (0").
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).
The 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: 70°F
The best month for swimming (with the highest average sea temperature) is August (74.4°F).
The coldest month (with the lowest average sea temperature) is February (39.3°F).
Average daylight in September /
Average sunshine in September
Rockaway, NJ
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
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
The months with the highest UV index are June and July (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
Rockaway, NJ
- Average cloud cover in September: 42
The months with the most cloud cover are February and March (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Rockaway, NJ
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
