Temperatures in September
It's hot in September in Jacksonville with an average temperature of 31°C. Temperatures this month range from a low of 29°C to a high of 32°C. At night, you can expect temperatures between 22°C and 26°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Jacksonville in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Jacksonville with hot temperatures, averaging around 32°C during the day and nights close to 25°C. Plenty of days with a chance of precipitation. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature stays the same at 32°C, with nights close to 25°C. The chance of precipitation is high during this period. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of September
By the end of September, the average daytime temperature in Jacksonville will be around 31°C, with nights close to 23°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
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Precipitation in September
In September, there is an average of 188 mm of precipitation, spread over 13 days. The wind speed is around 4 Bft, mostly coming from the East.
The average precipitation chance is 44% per day this month. The weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Jacksonville. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Jacksonville in September |
London | ||
|---|---|---|---|
 Average Temperature |
31°C | 20°C | |
 High Temp |
32°C | 22°C | |
| Low Temp |
29°C | 17°C | |
 Total Precipitation |
188 mm | 44 mm | |
| Rainy Days |
13 days | 8 days | |
August
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Jacksonville?
After some sun? Then September isn’t the best time to be in Jacksonville. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in Jacksonville runs from June to November.
Temperature records for Jacksonville in September
With 36°C, Jacksonville hit the highest temperature in the last 10 years in September 2019. The lowest daytime temperature in this month was 22°C in 2022. The extreme night temperatures ranged from a low of 16°C to a high of 27°C.
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Daily Temperature in September in Jacksonville
This chart shows the average daily temperatures, both day and night, for each day in September in Jacksonville, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Jacksonville
The chart below shows the average daily precipitation in September for Jacksonville, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 13 days of rain in Jacksonville.
Daily UV Index in September in Jacksonville
This chart shows the average daily UV index in September in Jacksonville, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Jacksonville Over the Years
This chart shows the average temperature in September in Jacksonville, measured in degrees Celsius, over the past years.
Total Precipitation in September in Jacksonville Over the Years
This chart shows the average precipitation in September in Jacksonville, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Jacksonville
Click on a specific day in September for detailed info on the typical weather on that day in Jacksonville. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Jacksonville
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Average Weather in Jacksonville by Month
Click on a month below to see detailed weather info for Jacksonville. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Jacksonville for all months at once
