September is one of the warmer months of the year in Hialeah, with average highs near 29.9°C and lows around 26°C (mean 28°C). It is a relatively wet time of year, averaging 189 mm of rainfall and 79% relative humidity across the period.
September is one of the warmer months of the year in Hialeah. Across 45 years of records, the warmest September in Hialeah was 2024 — when the month averaged 29.4°C — while the coldest were 1984 and 1985 at 26.7°C. Typical September days reach 29.9°C with nights near 26°C. The long-term trend is warming, about 0.3°C per decade.
September is a relatively wet time of year in Hialeah, averaging 189 mm of rainfall. The wettest Septembers on record were 2001 and 2017 with 311 mm, while the driest was 2019 at 57 mm.
Relative humidity in Hialeah during September averages 79%. The most humid September was 1985 at 82%, and the least humid was 2019 at 76%.
September receives about 5 kWh/m²/day of solar energy in Hialeah. The sunniest Septembers were 1989 and 2019 at 5.5 kWh/m²/day, and the cloudiest was 1994 at 4.3.
Average wind speed in Hialeah during September is 2.9 m/s. The windiest September was 2004 at 4.9 m/s, while the calmest were 1987 and 2015 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.5°C | 27.8°C | 28.0°C | 28.2°C | 28.7°C | +1.2°C |
| Avg High | 29.4°C | 29.5°C | 30.0°C | 30.3°C | 30.7°C | +1.3°C |
| Avg Low | 25.6°C | 25.9°C | 26.0°C | 26.2°C | 26.6°C | +1°C |
| Avg Rain | 175 mm | 198 mm | 202 mm | 169 mm | 208 mm | +33 mm |
September temperatures in Hialeah have risen by about 1.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 18.9°C (2022) to a record high of 33.4°C (2022).
Rainfall in September is a relatively wet time of year, averaging 189 mm, with a wettest year of 311 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.2°C per decade, widening the gap between day and night.
A quieter season to visit Hialeah
If your dates are flexible, the more temperate months of March and December tend to be the most comfortable for visiting Hialeah. That said, September — with days averaging 29.9°C and nights around 26°C (mean 28°C) and higher rainfall (189 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 | 30.5°C | 28.4°C | 26.4°C | 32.9°C | 24.2°C | 187 mm | 81% | 2.3 m/s | 4.7 |
| 2024 🔥 | 31.2°C | 29.4°C | 27.6°C | 33.1°C | 26.5°C | 216 mm | 81% | 2.7 m/s | 4.9 |
| 2023 | 31.1°C | 29.0°C | 26.9°C | 32.6°C | 25.0°C | 189 mm | 77% | 2.3 m/s | 5.2 |
| 2022 | 30.6°C | 28.6°C | 26.5°C | 33.4°C | 18.9°C | 296 mm | 79% | 2.6 m/s | 5.1 |
| 2021 | 30.5°C | 28.2°C | 25.9°C | 32.2°C | 23.9°C | 178 mm | 77% | 2.1 m/s | 5.1 |
| 2020 | 30.3°C | 28.3°C | 26.4°C | 32.6°C | 24.8°C | 182 mm | 80% | 3 m/s | 4.9 |
| 2019 | 31.2°C | 28.6°C | 26.0°C | 33.0°C | 23.8°C | 57 mm | 76% | 4.5 m/s | 5.5 |
| 2018 | 30.3°C | 28.4°C | 26.5°C | 31.8°C | 24.8°C | 151 mm | 79% | 2.7 m/s | 5.3 |
| 2017 | 30.5°C | 28.4°C | 26.3°C | 31.7°C | 24.0°C | 311 mm | 79% | 3.3 m/s | 5.1 |
| 2016 | 30.2°C | 28.4°C | 26.7°C | 31.9°C | 24.8°C | 188 mm | 79% | 2 m/s | 5.1 |
| 2015 | 30.3°C | 28.4°C | 26.6°C | 31.9°C | 24.8°C | 186 mm | 80% | 1.9 m/s | 4.6 |
| 2014 | 29.6°C | 27.8°C | 26.0°C | 31.7°C | 24.7°C | 152 mm | 79% | 2.2 m/s | 4.7 |
| 2013 | 29.7°C | 27.7°C | 25.7°C | 31.5°C | 23.6°C | 121 mm | 80% | 2.5 m/s | 4.8 |
| 2012 | 29.8°C | 27.7°C | 25.7°C | 32.5°C | 24.3°C | 147 mm | 79% | 2.7 m/s | 5 |
| 2011 | 30.6°C | 28.5°C | 26.4°C | 31.7°C | 25.2°C | 163 mm | 77% | 2.3 m/s | 5.2 |
| 2010 | 30.3°C | 28.3°C | 26.2°C | 32.0°C | 23.0°C | 216 mm | 79% | 3.3 m/s | 5 |
| 2009 | 30.1°C | 28.3°C | 26.5°C | 31.7°C | 24.4°C | 198 mm | 79% | 2.1 m/s | 4.9 |
| 2008 | 29.8°C | 27.8°C | 25.8°C | 31.6°C | 24.2°C | 191 mm | 81% | 3.5 m/s | 4.9 |
| 2007 | 30.0°C | 28.0°C | 26.1°C | 32.4°C | 22.9°C | 243 mm | 79% | 2.6 m/s | 5 |
| 2006 | 30.2°C | 28.0°C | 25.7°C | 31.8°C | 22.5°C | 162 mm | 77% | 2.5 m/s | 5 |
| 2005 | 30.4°C | 28.1°C | 25.9°C | 32.4°C | 24.2°C | 155 mm | 80% | 3.1 m/s | 5.3 |
| 2004 | 29.8°C | 27.9°C | 26.0°C | 31.9°C | 23.3°C | 208 mm | 82% | 4.9 m/s | 4.8 |
| 2003 | 30.0°C | 28.0°C | 26.0°C | 31.9°C | 24.3°C | 226 mm | 81% | 2.7 m/s | 4.8 |
| 2002 | 30.0°C | 28.2°C | 26.4°C | 31.5°C | 25.1°C | 148 mm | 81% | 3.1 m/s | 5 |
| 2001 🌧️ | 29.2°C | 27.3°C | 25.4°C | 31.7°C | 20.5°C | 311 mm | 80% | 2.8 m/s | 4.5 |
| 2000 | 30.4°C | 28.4°C | 26.4°C | 32.2°C | 25.1°C | 176 mm | 78% | 2.6 m/s | 5 |
| 1999 | 29.7°C | 27.6°C | 25.5°C | 32.3°C | 21.6°C | 239 mm | 80% | 3.3 m/s | 4.7 |
| 1998 | 29.9°C | 28.2°C | 26.5°C | 32.5°C | 24.9°C | 253 mm | 80% | 3.6 m/s | 4.7 |
| 1997 | 29.2°C | 27.4°C | 25.6°C | 30.4°C | 23.1°C | 220 mm | 81% | 2.9 m/s | 4.8 |
| 1996 | 30.2°C | 28.0°C | 25.9°C | 31.8°C | 24.0°C | 139 mm | 77% | 2.8 m/s | 5.4 |
| 1995 | 29.9°C | 28.1°C | 26.2°C | 31.4°C | 25.4°C | 199 mm | 79% | 2.6 m/s | 4.8 |
| 1994 | 28.6°C | 27.2°C | 25.7°C | 31.1°C | 24.3°C | 303 mm | 82% | 2.7 m/s | 4.3 |
| 1993 | 29.5°C | 27.8°C | 26.0°C | 31.0°C | 23.2°C | 182 mm | 80% | 3 m/s | 4.8 |
| 1992 | 29.2°C | 27.5°C | 25.7°C | 30.3°C | 23.2°C | 136 mm | 80% | 3 m/s | 4.9 |
| 1991 | 29.4°C | 27.7°C | 25.9°C | 30.7°C | 21.8°C | 164 mm | 79% | 2.6 m/s | 5 |
| 1990 | 29.8°C | 28.0°C | 26.1°C | 31.7°C | 24.1°C | 142 mm | 77% | 2.6 m/s | 5.2 |
| 1989 | 30.0°C | 28.1°C | 26.1°C | 31.2°C | 23.4°C | 165 mm | 78% | 2.9 m/s | 5.5 |
| 1988 | 29.8°C | 28.0°C | 26.2°C | 30.6°C | 23.9°C | 77 mm | 77% | 3.9 m/s | 5.3 |
| 1987 | 30.1°C | 28.2°C | 26.3°C | 32.9°C | 24.7°C | 242 mm | 76% | 1.9 m/s | 4.6 |
| 1986 | 29.7°C | 27.8°C | 25.9°C | 31.0°C | 24.9°C | 109 mm | 77% | 3 m/s | 5.4 |
| 1985 | 28.4°C | 26.7°C | 25.0°C | 30.1°C | 23.2°C | 163 mm | 82% | 3.7 m/s | 5 |
| 1984 ❄️ | 28.7°C | 26.7°C | 24.7°C | 30.2°C | 22.0°C | 211 mm | 80% | 3.7 m/s | 4.8 |
| 1983 | 28.9°C | 27.2°C | 25.5°C | 30.6°C | 20.9°C | 212 mm | 81% | 3.2 m/s | — |
| 1982 | 29.3°C | 27.4°C | 25.5°C | 30.8°C | 23.4°C | 182 mm | 78% | 2.7 m/s | — |
| 1981 | 29.3°C | 27.4°C | 25.5°C | 31.0°C | 22.3°C | 214 mm | 79% | 2.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 29.9°C with lows near 26°C (mean 28°C), based on 45 years of NASA POWER data.
September averages 189 mm of rainfall in Hialeah, a relatively wet time of year. The wettest on record was 311 mm in 2001.
The hottest September reached 33.4°C in 2022. The coldest dipped to 18.9°C in 2022.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.6°C. Daytime highs moved from 28.9°C to 30.8°C and overnight lows from 25.2°C to 26.7°C over the same span.
September is one of the warmer months of the year in Hialeah and a relatively wet time of year, so plan for around 29.9°C daytime highs and 26°C at night.
Not quite — September is the 10th coolest month in Hialeah, averaging 28°C.
For September in Hialeah, pack light layers you can adjust through the day, with typical highs of 29.9°C and lows of 26°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 79% — quite humid.
Average wind speed in September is 2.9 m/s. The windiest September on record averaged 4.9 m/s (2004).
The wettest September on record was 2001 with 311 mm. On average, September sees 189 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 Hialeah 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.
