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 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 high-temperature average in September for Rio, Florida, is a moderately hot 85.3°F (29.6°C), staying closely aligned with August's conditions. Nights in Rio, Florida, during September maintain a steady temperature, averaging at a still warm 78.3°F (25.7°C).Heat index
In September, the heat index is evaluated at a sweltering 96.8°F (36°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Realize that the values for the heat index are set for shaded places and light winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. 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. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Rio, in September, it is raining for 22.6 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, in Rio, there are 168.1 rainfall days, and 14.09" (358mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 19min.On the first day of September, sunrise is at 7:00 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:07 pm EDT.
Sunshine
The average sunshine in September is 9h.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 rays for average individuals.Note: In September, the UV index of 7 transforms into the following advice:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
Is it hot in Rio during September?
What is the average humidity in September in Rio?
How much does it rain in Rio in September?
How many hours of daylight does Rio have in September?
When are sunrise and sunset in September in Rio?
How many hours of sunshine does Rio have in September?
When is the highest UV index in Rio?
How high is the UV index in September in Rio?
Average temperature in September
Rio, 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
Rio, 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
Rio, 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
Rio, 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
Rio, 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
Rio, 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 daylight in September /
Average sunshine in September
Rio, 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
Rio, 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
Rio, 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
Rio, 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
Rio, 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).
Rio, Florida, USA
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