September is one of the warmer months of the year in Bradenton, with average highs near 29.6°C and lows around 24.5°C (mean 27.1°C). It is a relatively wet time of year, averaging 177 mm of rainfall and 82% relative humidity across the period.
September is one of the warmer months of the year in Bradenton. Across 45 years of records, the warmest September in Bradenton was 2024 — when the month averaged 28.5°C — while the coldest was 2001 at 25.8°C. Typical September days reach 29.6°C with nights near 24.5°C. The long-term trend is warming, about 0.3°C per decade.
September is a relatively wet time of year in Bradenton, averaging 177 mm of rainfall. The wettest September on record was 2022 with 358 mm, while the driest was 2019 at 43 mm.
Relative humidity in Bradenton during September averages 82%. The most humid September was 2004 at 86%, and the least humid was 1996 at 74%.
September receives about 5.2 kWh/m²/day of solar energy in Bradenton. The sunniest September was 2019 at 5.9 kWh/m²/day, and the cloudiest was 1998 at 4.5.
Average wind speed in Bradenton during September is 2.7 m/s. The windiest September was 2004 at 4.7 m/s, while the calmest was 1987 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.5°C | 27.0°C | 27.0°C | 27.2°C | 27.7°C | +1.2°C |
| Avg High | 29.0°C | 29.5°C | 29.5°C | 29.8°C | 30.3°C | +1.3°C |
| Avg Low | 23.9°C | 24.4°C | 24.5°C | 24.6°C | 25.0°C | +1.1°C |
| Avg Rain | 174 mm | 155 mm | 195 mm | 175 mm | 194 mm | +20 mm |
September temperatures in Bradenton have risen by about 1.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 17.2°C (1981) to a record high of 33.2°C (2020).
Rainfall in September is a relatively wet time of year, averaging 177 mm, with a wettest year of 358 mm.
A quieter season to visit Bradenton
If your dates are flexible, the more temperate months of April and November tend to be the most comfortable for visiting Bradenton. That said, September — with days averaging 29.6°C and nights around 24.5°C (mean 27.1°C) and higher rainfall (177 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 30.2°C | 27.4°C | 24.6°C | 31.7°C | 22.5°C | 83 mm | 81% | 2.4 m/s | 5 |
| 2024 🔥 | 30.9°C | 28.5°C | 26.0°C | 31.9°C | 24.4°C | 185 mm | 83% | 2.5 m/s | 5.2 |
| 2023 | 31.3°C | 28.2°C | 25.1°C | 33.1°C | 22.4°C | 136 mm | 77% | 2.2 m/s | 5.5 |
| 2022 🌧️ | 29.8°C | 27.2°C | 24.7°C | 32.6°C | 19.2°C | 358 mm | 82% | 2.5 m/s | 4.7 |
| 2021 | 29.5°C | 27.2°C | 24.8°C | 30.8°C | 21.5°C | 191 mm | 82% | 2 m/s | 5 |
| 2020 | 29.9°C | 27.4°C | 24.9°C | 33.2°C | 19.0°C | 208 mm | 83% | 2.9 m/s | 5 |
| 2019 | 30.4°C | 27.4°C | 24.4°C | 32.4°C | 21.1°C | 43 mm | 80% | 3.3 m/s | 5.9 |
| 2018 | 30.3°C | 27.8°C | 25.3°C | 32.1°C | 23.8°C | 145 mm | 83% | 2.4 m/s | 5.7 |
| 2017 | 29.6°C | 27.2°C | 24.7°C | 31.3°C | 23.2°C | 258 mm | 82% | 2.8 m/s | 5.3 |
| 2016 | 29.9°C | 27.5°C | 25.1°C | 31.3°C | 23.4°C | 169 mm | 83% | 2.3 m/s | 5.4 |
| 2015 | 29.4°C | 27.2°C | 25.0°C | 31.3°C | 22.6°C | 187 mm | 84% | 2.2 m/s | 4.8 |
| 2014 | 29.5°C | 27.0°C | 24.5°C | 33.0°C | 23.2°C | 315 mm | 82% | 2.1 m/s | 4.7 |
| 2013 | 29.6°C | 26.9°C | 24.3°C | 31.1°C | 21.6°C | 204 mm | 83% | 2.6 m/s | 5.3 |
| 2012 | 29.0°C | 26.4°C | 23.8°C | 31.2°C | 20.9°C | 130 mm | 82% | 2.6 m/s | 5.1 |
| 2011 | 29.8°C | 27.3°C | 24.7°C | 31.3°C | 23.1°C | 192 mm | 81% | 2.2 m/s | 5.1 |
| 2010 | 30.5°C | 27.5°C | 24.5°C | 32.1°C | 22.0°C | 110 mm | 79% | 2.7 m/s | 5.7 |
| 2009 | 29.6°C | 27.2°C | 24.9°C | 30.8°C | 20.6°C | 168 mm | 83% | 2.2 m/s | 5.2 |
| 2008 | 29.7°C | 26.9°C | 24.1°C | 31.5°C | 20.0°C | 91 mm | 81% | 3.2 m/s | 5.3 |
| 2007 | 30.2°C | 27.5°C | 24.8°C | 31.9°C | 22.7°C | 142 mm | 80% | 2.9 m/s | 5.4 |
| 2006 | 29.5°C | 26.9°C | 24.3°C | 30.9°C | 22.0°C | 179 mm | 81% | 2.1 m/s | 5.4 |
| 2005 | 30.4°C | 27.5°C | 24.5°C | 32.8°C | 22.5°C | 80 mm | 79% | 3.1 m/s | 5.3 |
| 2004 | 29.1°C | 26.9°C | 24.8°C | 30.9°C | 21.9°C | 336 mm | 86% | 4.7 m/s | 4.8 |
| 2003 | 29.0°C | 26.6°C | 24.2°C | 30.6°C | 21.1°C | 184 mm | 85% | 2.8 m/s | 4.9 |
| 2002 | 29.8°C | 27.4°C | 25.0°C | 30.9°C | 24.1°C | 187 mm | 86% | 2.9 m/s | 4.9 |
| 2001 ❄️ | 28.0°C | 25.8°C | 23.6°C | 30.3°C | 18.5°C | 343 mm | 85% | 2.6 m/s | 4.7 |
| 2000 | 29.7°C | 27.1°C | 24.6°C | 31.5°C | 21.5°C | 240 mm | 82% | 2.9 m/s | 5.1 |
| 1999 | 29.4°C | 26.8°C | 24.3°C | 32.2°C | 19.3°C | 149 mm | 82% | 3.1 m/s | 4.8 |
| 1998 | 29.3°C | 27.3°C | 25.2°C | 31.3°C | 22.4°C | 281 mm | 86% | 3.5 m/s | 4.5 |
| 1997 | 30.1°C | 27.2°C | 24.3°C | 32.5°C | 21.5°C | 198 mm | 77% | 2.6 m/s | 5.4 |
| 1996 | 31.1°C | 27.9°C | 24.7°C | 32.6°C | 21.3°C | 86 mm | 74% | 2.7 m/s | 5.5 |
| 1995 | 29.6°C | 27.1°C | 24.5°C | 30.8°C | 22.8°C | 127 mm | 83% | 2.3 m/s | 5.2 |
| 1994 | 28.2°C | 26.1°C | 24.0°C | 30.8°C | 21.6°C | 246 mm | 86% | 2.7 m/s | 4.7 |
| 1993 | 29.3°C | 26.9°C | 24.5°C | 31.0°C | 19.8°C | 115 mm | 82% | 2.4 m/s | 5.3 |
| 1992 | 28.9°C | 26.6°C | 24.3°C | 30.5°C | 21.6°C | 148 mm | 84% | 2.6 m/s | 5.2 |
| 1991 | 29.5°C | 26.8°C | 24.1°C | 31.0°C | 18.8°C | 105 mm | 83% | 2.8 m/s | 5.6 |
| 1990 | 30.0°C | 27.2°C | 24.4°C | 31.6°C | 20.0°C | 91 mm | 78% | 2.5 m/s | 5.3 |
| 1989 | 29.8°C | 27.1°C | 24.4°C | 31.4°C | 22.4°C | 178 mm | 82% | 2.5 m/s | 5.3 |
| 1988 | 29.4°C | 26.9°C | 24.5°C | 30.5°C | 21.1°C | 275 mm | 85% | 3.2 m/s | 5.1 |
| 1987 | 29.8°C | 27.2°C | 24.6°C | 31.8°C | 22.4°C | 133 mm | 79% | 1.9 m/s | 4.7 |
| 1986 | 29.6°C | 26.8°C | 24.1°C | 30.7°C | 22.7°C | 107 mm | 82% | 2.4 m/s | 5.5 |
| 1985 | 28.4°C | 25.9°C | 23.4°C | 30.0°C | 20.9°C | 127 mm | 84% | 3.3 m/s | 5.5 |
| 1984 | 28.9°C | 26.1°C | 23.3°C | 30.9°C | 21.8°C | 144 mm | 80% | 3.4 m/s | 5.3 |
| 1983 | 28.1°C | 25.9°C | 23.7°C | 30.1°C | 18.5°C | 218 mm | 84% | 3 m/s | — |
| 1982 | 28.7°C | 26.3°C | 23.9°C | 31.0°C | 19.8°C | 258 mm | 83% | 2.5 m/s | — |
| 1981 | 28.7°C | 26.0°C | 23.4°C | 30.6°C | 17.2°C | 122 mm | 82% | 2.5 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 29.6°C with lows near 24.5°C (mean 27.1°C), based on 45 years of NASA POWER data.
September averages 177 mm of rainfall in Bradenton, a relatively wet time of year. The wettest on record was 358 mm in 2022.
The hottest September reached 33.2°C in 2020. The coldest dipped to 17.2°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.7°C. Daytime highs moved from 28.6°C to 30.3°C and overnight lows from 23.5°C to 25°C over the same span.
September is one of the warmer months of the year in Bradenton and a relatively wet time of year, so plan for around 29.6°C daytime highs and 24.5°C at night.
Not quite — September is the 9th coolest month in Bradenton, averaging 27.1°C.
For September in Bradenton, pack light layers you can adjust through the day, with typical highs of 29.6°C and lows of 24.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 82% — quite humid.
Average wind speed in September is 2.7 m/s. The windiest September on record averaged 4.7 m/s (2004).
The wettest September on record was 2022 with 358 mm. On average, September sees 177 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Bradenton behaves each September, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for September specifically, along with year-by-year records and how the month has changed over the decades.
