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
With September's onset, the weather in Perth Amboy reveals a slight temperature decrease, transitioning from a warm 81.3°F (27.4°C) in August to a still moderately hot 75°F (23.9°C). During the nights in September, Perth Amboy experiences a consistent average temperature of 61.9°F (16.6°C).Humidity
In September, the average relative humidity in Perth Amboy, New Jersey, is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.81" (46mm) of precipitation.Snowfall
In Perth Amboy, New Jersey, snow does not fall in May through September.Ocean temperature
In September, the average ocean temperature in Perth Amboy is 70.2°F (21.2°C).Note: For swimming, a surface water temperature of 70.2°F (21.2°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).
Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:28 pm. On the last day of September, in Perth Amboy, sunrise is at 6:53 am and sunset at 6:40 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during September leads to these advisories:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Frequently asked questions
What is the average September temperature in Perth Amboy?
What is the average humidity in September in Perth Amboy?
What is the driest month in Perth Amboy?
How many days does it rain in September in Perth Amboy?
When it does not snow in Perth Amboy?
Does it snow in Perth Amboy in September?
What is the ocean temperature in September in Perth Amboy?
How many hours of daylight does Perth Amboy have in September?
What time are sunrise and sunset in September in Perth Amboy?
How long on average sun shines in September in Perth Amboy?
What is the UV index intensity in September in Perth Amboy?
Average temperature in September
Perth Amboy, NJ
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in September: 61.9°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 (25.9°F).
Average pressure in September
Perth Amboy, 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
Perth Amboy, NJ
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Perth Amboy, NJ
- Average humidity in September: 75%
The months with the highest relative humidity are February and May (77%).
The months with the lowest relative humidity are March, April, August and November (73%).
Average rainfall in September
Perth Amboy, NJ
- Average rainfall in September: 1.81"
The wettest months (with the highest rainfall) are July and December (3.31").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Perth Amboy, NJ
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Perth Amboy, NJ
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Perth Amboy, NJ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in September
Perth Amboy, NJ
- Average sea temperature in September: 70.1°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).
Average daylight in September /
Average sunshine in September
Perth Amboy, 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 4min
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 42min).
Average sunshine days in September
Perth Amboy, NJ
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in September
Perth Amboy, 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
Perth Amboy, NJ
- Average cloud cover in September: 36
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Perth Amboy, 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).
Perth Amboy, New Jersey, USA
Weather forecast for your location
2. Allow the app to use your location
