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 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
Crystal River starts September with an average high-temperature of a still tropical 87.1°F (30.6°C), hinting at a minimal fluctuation from August. Throughout September, the temperature in Crystal River, Florida, falls to an average low of 74.3°F (23.5°C).Heat index
For September, the heat index is calculated to be a fiery hot 102.2°F (39°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged 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 'apparent temperature' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance 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.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
September is the most humid month, with an average relative humidity of 78%.Rainfall
In September, the rain falls for 21.4 days. Throughout September, 3.54" (90mm) of precipitation is accumulated. In Crystal River, during the entire year, the rain falls for 178.4 days and collects up to 34.06" (865mm) of precipitation.Snowfall
In Crystal River, snow does not fall in February through December.Ocean temperature
In Crystal River, in September, the average water temperature is 84.2°F (29°C).Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.
Daylight
In September, the average length of the day in Crystal River is 12h and 19min.On the first day of September, sunrise is at 7:08 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:16 pm EDT.
Sunshine
In September, the average sunshine in Crystal River is 8.9h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 7 in September transforms into this advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Crystal River during September?
What is the most humid month in Crystal River?
What is the average humidity in September in Crystal River?
How many days does it rain in September in Crystal River?
When it does not snow in Crystal River?
What is the ocean temperature in September in Crystal River?
What is the average length of the day in September in Crystal River?
When is the sunrise / sunset in September in Crystal River?
How many hours of sunshine does Crystal River have in September?
What are the months with the highest UV index in Crystal River?
How high is the UV index in September in Crystal River?
Average temperature in September
Crystal River, FL
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (65.3°F).
- Average low temperature in September: 74.3°F
The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (49.6°F).
Average pressure in September
Crystal River, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
Crystal River, FL
- Average wind speed in September: 6mph
The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in September
Crystal River, FL
- Average humidity in September: 78%
The month with the highest relative humidity is September (78%).
The months with the lowest relative humidity are January, March and May (73%).
Average rainfall in September
Crystal River, FL
- Average rainfall in September: 3.54"
The wettest month (with the highest rainfall) is August (5.51").
The driest month (with the least rainfall) is March (1.26").
Average rainfall days in September
Crystal River, FL
- Average rainfall days in September: 21.4 days
The month with the highest number of rainy days is August (26.9 days).
The month with the least rainy days is November (8.7 days).
Average snowfall days in September
Crystal River, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in September
Crystal River, FL
- Average sea temperature in September: 84°F
The best month for swimming (with the highest average sea temperature) is August (86°F).
The coldest months (with the lowest average sea temperature) are February and March (68°F).
Average daylight in September /
Average sunshine in September
Crystal River, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is May (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Crystal River, FL
- Average sunshine days in September: 6.2 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is August (2.1 days).
Average UV index in September
Crystal River, 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
Crystal River, FL
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 34).
The month with the least cloud cover is May (Cloud cover 24).
Average visibility in September
Crystal River, 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).
Crystal River, Florida, USA
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