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
Rock Harbor's entry into September measures an average high-temperature of a still warm 84.6°F (29.2°C), closely parallel to the preceding month. Rock Harbor nights in September witness a mild cool down to an average temperature of 81.7°F (27.6°C).Heat index
In September, the average heat index is evaluated at a tropical 93.2°F (34°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
The average relative humidity in September is 74%.Rainfall
In Rock Harbor, Florida, in September, it is raining for 22.9 days, with typically 4.25" (108mm) of accumulated precipitation. In Rock Harbor, during the entire year, the rain falls for 190.1 days and collects up to 27.05" (687mm) of precipitation.Daylight
In Rock Harbor, the average length of the day in September is 12h and 17min.On the first day of the month, sunrise is at 7:02 am and sunset at 7:40 pm. On the last day of September, in Rock Harbor, Florida, sunrise is at 7:13 am and sunset at 7:09 pm EDT.
Sunshine
In Rock Harbor, the average sunshine in September is 9h.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index in Rock Harbor. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 7 suggests this advice:
Deflect overexposure. Sun protection is a necessity. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
How hot is September in Rock Harbor?
What is the average humidity in September in Rock Harbor?
How much does it rain in Rock Harbor in September?
What is the average length of the day in September in Rock Harbor?
What time are sunrise and sunset in September in Rock Harbor?
How long on average sun shines in September in Rock Harbor?
What are the months with the highest UV index in Rock Harbor?
How high is the UV index in September in Rock Harbor?
Average temperature in September
Rock Harbor, FL
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.7°F).
- Average low temperature in September: 81.7°F
The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (66.9°F).
Average pressure in September
Rock Harbor, FL
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).
Average wind speed in September
Rock Harbor, FL
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in September
Rock Harbor, FL
- Average humidity in September: 74%
The months with the highest relative humidity are February, June and December (76%).
The month with the lowest relative humidity is March (73%).
Average rainfall in September
Rock Harbor, FL
- Average rainfall in September: 4.25"
The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (0.59").
Average rainfall days in September
Rock Harbor, FL
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is September (22.9 days).
The month with the least rainy days is February (9.7 days).
Average daylight in September /
Average sunshine in September
Rock Harbor, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Rock Harbor, FL
- Average sunshine days in September: 5.2 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (5.2 days).
Average UV index in September
Rock Harbor, FL
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in September
Rock Harbor, FL
- Average cloud cover in September: 30
The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in September
Rock Harbor, 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).
Rock Harbor, Florida, USA
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