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
September's onset brings a negligible change in high-temperatures, falling from 83.7°F (28.7°C) in August to a still warm 77.4°F (25.2°C). Throughout September nights, Riviera Beach registers an average low-temperature of 63.3°F (17.4°C).Humidity
In Riviera Beach, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Riviera Beach. Rain falls for 11.8 days and accumulates 1.89" (48mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
In September, the average ocean temperature in Riviera Beach is 73.6°F (23.1°C).Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.6°F (23.1°C) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 77°F (25°C) to 82.4°F (28°C).)
Daylight
In Riviera Beach, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm EDT.
Sunshine
In Riviera Beach, the average sunshine in September is 9.2h.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 exposure to the Sun's UV rays for the average person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Act with care - The need to guard against sun damage is communicated. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.
Frequently asked questions
What is the temperature in September in Riviera Beach?
What is the average humidity in September in Riviera Beach?
What is the driest month in Riviera Beach?
How many days does it rain in September in Riviera Beach?
When it does not snow in Riviera Beach?
What is the ocean temperature in September in Riviera Beach?
How many hours of daylight does Riviera Beach have in September?
What time are sunrise and sunset in September in Riviera Beach?
How long on average sun shines in September in Riviera Beach?
What is the UV index intensity in September in Riviera Beach?
Average temperature in September
Riviera Beach, MD
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in September
Riviera Beach, MD
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Riviera Beach, MD
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Riviera Beach, MD
- Average humidity in September: 75%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).
Average rainfall in September
Riviera Beach, MD
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Riviera Beach, MD
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in September
Riviera Beach, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Riviera Beach, MD
- 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
Riviera Beach, MD
- Average sea temperature in September: 73.5°F
The best month for swimming (with the highest average sea temperature) is August (77.5°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).
Average daylight in September /
Average sunshine in September
Riviera Beach, MD
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Riviera Beach, MD
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Riviera Beach, MD
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Riviera Beach, MD
- Average cloud cover in September: 34
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Riviera Beach, MD
- 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).
Riviera Beach, Maryland, USA
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