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 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
The transition into September is marked with an average high-temperature of a warm 85.3°F (29.6°C), showing an insignificant shift from August's 87.1°F (30.6°C). Night temperatures during September experience a slight downturn, averaging a still moderately hot 78.3°F (25.7°C).Heat index
In September, the heat index is estimated at a sweltering 96.8°F (36°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Know that the heat index computations account for shaded terrains and slight winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
In Jensen Beach, Florida, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 22.6 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. Throughout the year, in Jensen Beach, Florida, there are 168.1 rainfall days, and 14.09" (358mm) of precipitation is accumulated.Ocean temperature
In September, the average ocean temperature is 84.4°F (29.1°C).Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.
Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:00 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:07 pm EDT.
Sunshine
In September, the average sunshine is 9h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index in Jensen Beach. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: In September, the UV index of 7 transforms into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Jensen Beach in September?
What is the average humidity in September in Jensen Beach?
How many days does it rain in September in Jensen Beach?
What is the water temperature in September in Jensen Beach?
How many hours of daylight does Jensen Beach have in September?
When is the sunrise / sunset in September in Jensen Beach?
How many hours of sunshine does Jensen Beach have in September?
When is the highest UV index in Jensen Beach?
How high is the UV index in September in Jensen Beach?
Average temperature in September
Jensen Beach, FL
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is January (71.4°F).
- Average low temperature in September: 78.3°F
The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (61.2°F).
Average pressure in September
Jensen Beach, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
Jensen Beach, FL
- Average wind speed in September: 7.9mph
The windiest months (with the highest average wind speed) are January, March and November (10.3mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Jensen Beach, FL
- Average humidity in September: 77%
The months with the highest relative humidity are June and August (78%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Jensen Beach, FL
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is August (2.56").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Jensen Beach, FL
- Average rainfall days in September: 22.6 days
The month with the highest number of rainy days is August (23.1 days).
The month with the least rainy days is February (7.7 days).
Average sea temperature in September
Jensen Beach, FL
- Average sea temperature in September: 84.4°F
The best month for swimming (with the highest average sea temperature) is August (85.1°F).
The coldest month (with the lowest average sea temperature) is February (73.3°F).
Average daylight in September /
Average sunshine in September
Jensen Beach, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 6min).
Average sunshine days in September
Jensen Beach, FL
- Average sunshine days in September: 4.7 days
The month with the most sunshine days is January (19.5 days).
The month with the least sunshine days is August (3.4 days).
Average UV index in September
Jensen Beach, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in September
Jensen Beach, FL
- Average cloud cover in September: 29
The months with the most cloud cover are January, November and December (Cloud cover 34).
The months with the least cloud cover are May and July (Cloud cover 26).
Average visibility in September
Jensen Beach, FL
- 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).
Jensen Beach, Florida, USA
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