Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Keyport's transition into September involves a gentle shift in temperature, receding from a moderately hot 81.1°F (27.3°C) in August to a still warm 74.5°F (23.6°C). Throughout September, Keyport experiences a low-temperature average of 62.4°F (16.9°C).Humidity
In September, the average relative humidity in Keyport, New Jersey, is 75%.Rainfall
In Keyport, in September, during 13.5 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, there are 153 rainfall days, and 28.7" (729mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Keyport.Ocean temperature
In Keyport, New Jersey, in September, the average water temperature is 70.3°F (21.3°C).Note: For most people, swimming in water at 70.3°F (21.3°C) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
In September, the average length of the day in Keyport, New Jersey, is 12h and 27min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:28 pm. On the last day of September, in Keyport, sunrise is at 6:52 am and sunset at 6:40 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The average daily maximum UV index in September in Keyport is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Watch out! Sand and water enhance the UV exposure you receive.
Frequently asked questions
What are the temperatures in Keyport in September?
What is the average humidity in September in Keyport?
How many days does it rain in September in Keyport?
When it does not snow in Keyport?
What is the ocean temperature in September in Keyport?
How many hours of daylight does Keyport have in September?
When is the sunrise / sunset in September in Keyport?
How long on average sun shines in September in Keyport?
What is the UV index reading in September in Keyport?
Average temperature in September
Keyport, NJ
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in September
Keyport, 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
Keyport, NJ
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Keyport, NJ
- Average humidity in September: 75%
The months with the highest relative humidity are May and June (77%).
The months with the lowest relative humidity are March, April, August and November (73%).
Average rainfall in September
Keyport, NJ
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is July (3.43").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in September
Keyport, NJ
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
Keyport, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Keyport, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Keyport, 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).
Average daylight in September /
Average sunshine in September
Keyport, 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 18min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Keyport, NJ
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in September
Keyport, 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, November and December (UV index 2).
Average cloud cover in September
Keyport, NJ
- Average cloud cover in September: 35
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in September
Keyport, 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).
Keyport, New Jersey, USA
Weather forecast for your location
2. Allow the app to use your location
