September weather in Naples, FL
The average temperature in Naples in September is 82.4°F (75.1°F–89.6°F). Average precipitation: 8.60 inches.
September is a fall month in Naples, and is warmer than the annual average of 75.5°F. Daily temperatures swing about 14.5°F between overnight low and afternoon high. Expect about 16 days with precipitation. Daylight averages about 12h 9m. For travel, September is a wet month.
Avg High
89.6°F
Avg Low
75.1°F
Precipitation
8.60 in
Daylight
12h 9m
September records in Naples
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (2012) | 73.0°F (2004) | 0.68 in (2006) |
| September 2 | 96.1°F (2020) | 73.0°F (2010) | 0.90 in (2022) |
| September 3 | 93.9°F (2020) | 72.0°F (2006) | 1.95 in (2018) |
| September 4 | 96.1°F (2020) | 73.0°F (2004) | 0.56 in (2024) |
| September 5 | 96.1°F (2020) | 73.0°F (2006) | 1.76 in (2002) |
| September 6 | 95.0°F (2007) | 71.1°F (2013) | 2.57 in (2013) |
| September 7 | 95.0°F (2007) | 73.0°F (2020) | 0.92 in (2018) |
| September 8 | 95.0°F (2007) | 73.0°F (2013) | 1.69 in (2025) |
| September 9 | 95.0°F (2019) | 72.0°F (2023) | 1.99 in (2010) |
| September 10 | 97.0°F (2019) | 73.9°F (2003) | 3.27 in (2017) |
| September 11 | 96.1°F (2019) | 73.0°F (2002) | 8.19 in (2017) |
| September 12 | 95.0°F (2019) | 73.0°F (2002) | 1.93 in (2009) |
| September 13 | 93.9°F (2010) | 73.0°F (2013) | 3.47 in (2020) |
| September 14 | 96.1°F (2019) | 73.9°F (2003) | 0.89 in (2015) |
| September 15 | 93.9°F (2007) | 73.0°F (2011) | 0.97 in (2013) |
| September 16 | 93.9°F (2007) | 73.0°F (2022) | 3.00 in (2021) |
| September 17 | 95.0°F (2007) | 73.0°F (2008) | 2.19 in (2013) |
| September 18 | 96.1°F (2019) | 72.0°F (2022) | 1.02 in (2012) |
| September 19 | 93.9°F (2005) | 72.0°F (2013) | 0.59 in (2014) |
| September 20 | 93.9°F (2025) | 72.0°F (2004) | 1.33 in (2009) |
| September 21 | 93.9°F (2025) | 71.1°F (2018) | 2.33 in (2018) |
| September 22 | 93.9°F (2007) | 73.0°F (2004) | 1.80 in (2007) |
| September 23 | 93.0°F (2006) | 71.1°F (2020) | 1.27 in (2018) |
| September 24 | 95.0°F (2024) | 71.1°F (2004) | 2.00 in (2003) |
| September 25 | 93.0°F (2009) | 72.0°F (2003) | 1.94 in (2011) |
| September 26 | 93.9°F (2019) | 70.0°F (2008) | 2.03 in (2003) |
| September 27 | 93.0°F (2019) | 72.0°F (2019) | 2.00 in (2022) |
| September 28 | 93.9°F (2025) | 71.1°F (2021) | 1.62 in (2010) |
| September 29 | 93.9°F (2007) | 68.0°F (2006) | 6.93 in (2003) |
| September 30 | 93.9°F (2019) | 70.0°F (2006) | 1.07 in (2008) |