September weather forecastSeaside Heights, NJ
September
Weather in September
September in Seaside Heights is marked by the onset of fall, as the heat begins to wane and the climate turns more pleasant. The town retains warmth, although days gradually become shorter. Exceptionally, rainfall registers a low of 2.09" (53mm) this month. September offers the perfect balance between summer warmth and the mild charm of fall. It's an opportune period in Seaside Heights to relish cooler nights and still-warm days.Temperature
The average high-temperature in Seaside Heights slightly decreases in September, shifting from a moderately hot 78.4°F (25.8°C) in August to an agreeable 72.5°F (22.5°C). Seaside Heights's September nights demonstrate minimal variation from the daytime temperatures, with an average of 66°F (18.9°C).Humidity
In September, the average relative humidity in Seaside Heights is 77%.Rainfall
In Seaside Heights, in September, it is raining for 12.5 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, in Seaside Heights, there are 155 rainfall days, and 33.23" (844mm) of precipitation is accumulated.Snowfall
In Seaside Heights, snow does not fall in May through October.Ocean temperature
In September, the average ocean temperature in Seaside Heights is 71.2°F (21.8°C).Note: For the majority, swimming in water with a temperature of 71.2°F (21.8°C) is not enjoyable. The difficulty in managing breathing rises as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Seaside Heights, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:39 pm EDT.
Sunshine
In Seaside Heights, the average sunshine in September is 9h.UV index
In Seaside Heights, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Seaside Heights, NJ
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in September
Seaside Heights, 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
Seaside Heights, NJ
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is July (8.8mph).
Average humidity in September
Seaside Heights, NJ
- Average humidity in September: 77%
The months with the highest relative humidity are May and June (81%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in September
Seaside Heights, NJ
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days in September
Seaside Heights, NJ
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Seaside Heights, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Seaside Heights, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Seaside Heights, NJ
- Average sea temperature in September: 71.2°F
The best month for swimming (with the highest average sea temperature) is August (75.8°F).
The coldest month (with the lowest average sea temperature) is February (40.8°F).
Average daylight in September /
Average sunshine in September
Seaside Heights, NJ
- Average daylight in September: 12h and 24min
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
Seaside Heights, NJ
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in September
Seaside Heights, 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 and December (UV index 2).
Average cloud cover in September
Seaside Heights, NJ
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Seaside Heights, 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).
