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
With the onset of September, a modest change to a still tropical 86.5°F (30.3°C) from August's 87.8°F (31°C) is noted in high-temperature. The September nights show a slight decrease to a mean low-temperature of 77.9°F (25.5°C).Heat index
The heat index for September is estimated at a fiery hot 98.6°F (37°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Know that the heat index computations account for shaded terrains and slight winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
The average relative humidity in September is 74%.Rainfall
In South Pasadena, during September, the rain falls for 17.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. In South Pasadena, Florida, during the entire year, the rain falls for 122.3 days and collects up to 9.45" (240mm) of precipitation.Ocean temperature
In South Pasadena, in September, the average water temperature is 84.7°F (29.3°C).Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.
Daylight
In South Pasadena, the average length of the day in September is 12h and 19min.On the first day of September, sunrise is at 7:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:17 pm EDT.
Sunshine
In South Pasadena, the average sunshine in September is 9.2h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 7 during September translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays. 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
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
What is the ocean temperature in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does South Pasadena have in September?
When is the highest UV index?
What is the UV index intensity in September?
Average temperature in September
South Pasadena, FL
- Average high temperature in September: 86.5°F
The warmest month (with the highest average high temperature) is August (87.8°F).
The month with the lowest average high temperature is January (66.7°F).
- Average low temperature in September: 77.9°F
The month with the highest average low temperature is August (80.6°F).
The coldest month (with the lowest average low temperature) is January (56.3°F).
Average pressure in September
South Pasadena, FL
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
South Pasadena, FL
- Average wind speed in September: 7.9mph
The windiest months (with the highest average wind speed) are January and November (9.9mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
South Pasadena, FL
- Average humidity in September: 74%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
South Pasadena, FL
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is March (0.12").
Average rainfall days in September
South Pasadena, FL
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (18.5 days).
The months with the least rainy days are January, February and March (5.6 days).
Average sea temperature in September
South Pasadena, FL
- Average sea temperature in September: 84.7°F
The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64°F).
Average daylight in September /
Average sunshine in September
South Pasadena, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
South Pasadena, FL
- Average sunshine days in September: 8 days
The month with the most sunshine days is March (24.3 days).
The month with the least sunshine days is August (5.6 days).
Average UV index in September
South Pasadena, 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 month with the lowest UV index is January (UV index 4).
Average cloud cover in September
South Pasadena, FL
- Average cloud cover in September: 26
The months with the most cloud cover are January and December (Cloud cover 29).
The month with the least cloud cover is May (Cloud cover 20).
Average visibility in September
South Pasadena, 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).
South Pasadena, Florida, USA
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