August is one of the warmer months of the year in Fort Myers, with average highs near 30.8°C and lows around 25.7°C (mean 28.3°C). It is a relatively wet time of year, averaging 207 mm of rainfall and 80% relative humidity across the period.
August is one of the warmer months of the year in Fort Myers. Across 45 years of records, the warmest August in Fort Myers was 2023 — when the month averaged 29.7°C — while the coldest were 1984 and 1994 at 27.2°C. Typical August days reach 30.8°C with nights near 25.7°C. The long-term trend is warming, about 0.3°C per decade.
August is a relatively wet time of year in Fort Myers, averaging 207 mm of rainfall. The wettest August on record was 1981 with 327 mm, while the driest was 1996 at 124 mm.
Relative humidity in Fort Myers during August averages 80%. The most humid August was 2016 at 84%, and the least humid was 1997 at 74%.
August receives about 5.5 kWh/m²/day of solar energy in Fort Myers. The sunniest August was 2007 at 6 kWh/m²/day, and the cloudiest was 2019 at 4.8.
Average wind speed in Fort Myers during August is 2 m/s. The windiest Augusts were 1995, 2008 and 2024, among others at 2.7 m/s, while the calmest was 1990 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.7°C | 28.0°C | 28.3°C | 28.4°C | 29.1°C | +1.4°C |
| Avg High | 30.3°C | 30.5°C | 30.8°C | 30.9°C | 31.8°C | +1.5°C |
| Avg Low | 25.1°C | 25.5°C | 25.7°C | 25.9°C | 26.5°C | +1.4°C |
| Avg Rain | 204 mm | 193 mm | 217 mm | 227 mm | 186 mm | -19 mm |
August temperatures in Fort Myers have risen by about 1.5°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 21.1°C (1984) to a record high of 34.4°C (2023).
Rainfall in August is a relatively wet time of year, averaging 207 mm, with a wettest year of 327 mm.
A quieter season to visit Fort Myers
If your dates are flexible, the more temperate months of November and March tend to be the most comfortable for visiting Fort Myers. That said, August — with days averaging 30.8°C and nights around 25.7°C (mean 28.3°C) and higher rainfall (207 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 | 32.0°C | 29.5°C | 26.9°C | 34.2°C | 25.6°C | 203 mm | 78% | 1.7 m/s | 5.6 |
| 2024 | 31.6°C | 29.0°C | 26.5°C | 33.5°C | 25.2°C | 211 mm | 82% | 2.7 m/s | 5.1 |
| 2023 🔥 | 32.5°C | 29.7°C | 27.0°C | 34.4°C | 24.1°C | 177 mm | 79% | 2.2 m/s | 5.5 |
| 2022 | 31.8°C | 28.9°C | 26.0°C | 33.4°C | 24.3°C | 176 mm | 79% | 1.7 m/s | 5.7 |
| 2021 | 31.1°C | 28.5°C | 26.0°C | 32.9°C | 25.0°C | 184 mm | 81% | 2.2 m/s | 5.2 |
| 2020 | 31.5°C | 28.9°C | 26.4°C | 33.2°C | 25.4°C | 163 mm | 80% | 1.9 m/s | 5.7 |
| 2019 | 30.6°C | 28.3°C | 26.0°C | 32.6°C | 24.8°C | 308 mm | 83% | 2.1 m/s | 4.8 |
| 2018 | 30.7°C | 28.0°C | 25.4°C | 31.7°C | 24.3°C | 181 mm | 82% | 1.9 m/s | 5.5 |
| 2017 | 31.1°C | 28.5°C | 26.0°C | 32.6°C | 23.6°C | 246 mm | 80% | 2.1 m/s | 5.6 |
| 2016 | 30.5°C | 28.0°C | 25.5°C | 32.4°C | 24.7°C | 274 mm | 84% | 2.4 m/s | 5.3 |
| 2015 | 31.1°C | 28.6°C | 26.0°C | 32.9°C | 24.5°C | 216 mm | 80% | 1.6 m/s | 5.3 |
| 2014 | 31.6°C | 28.8°C | 26.1°C | 32.7°C | 23.0°C | 182 mm | 77% | 1.8 m/s | 5.8 |
| 2013 | 30.5°C | 27.9°C | 25.4°C | 32.5°C | 23.7°C | 202 mm | 82% | 1.9 m/s | 5.6 |
| 2012 | 30.8°C | 28.2°C | 25.7°C | 33.4°C | 23.5°C | 236 mm | 79% | 2.3 m/s | 5.5 |
| 2011 | 31.2°C | 28.9°C | 26.6°C | 33.7°C | 25.2°C | 207 mm | 79% | 1.9 m/s | 5.2 |
| 2010 | 31.2°C | 28.7°C | 26.2°C | 32.9°C | 24.4°C | 217 mm | 79% | 2 m/s | 5.2 |
| 2009 | 31.1°C | 28.5°C | 25.9°C | 32.6°C | 25.0°C | 212 mm | 80% | 1.8 m/s | 5.5 |
| 2008 | 30.3°C | 28.0°C | 25.7°C | 31.8°C | 24.4°C | 295 mm | 81% | 2.7 m/s | 5.1 |
| 2007 | 32.2°C | 29.1°C | 26.1°C | 33.8°C | 25.0°C | 141 mm | 74% | 1.9 m/s | 6 |
| 2006 | 30.9°C | 28.2°C | 25.5°C | 33.0°C | 24.6°C | 252 mm | 79% | 1.9 m/s | 5.5 |
| 2005 | 31.1°C | 28.7°C | 26.3°C | 33.0°C | 25.0°C | 171 mm | 81% | 2 m/s | 5.7 |
| 2004 | 30.5°C | 28.3°C | 26.1°C | 32.3°C | 25.1°C | 288 mm | 81% | 1.8 m/s | 5.3 |
| 2003 | 30.0°C | 27.8°C | 25.6°C | 31.5°C | 24.6°C | 261 mm | 84% | 2 m/s | 4.9 |
| 2002 | 30.5°C | 27.9°C | 25.2°C | 31.8°C | 23.4°C | 197 mm | 81% | 2 m/s | 5.4 |
| 2001 | 30.7°C | 27.9°C | 25.2°C | 32.6°C | 22.7°C | 183 mm | 79% | 1.8 m/s | 5.6 |
| 2000 | 31.1°C | 28.1°C | 25.2°C | 32.9°C | 23.0°C | 167 mm | 75% | 2.2 m/s | 5.6 |
| 1999 | 30.7°C | 28.3°C | 26.0°C | 33.2°C | 24.1°C | 163 mm | 80% | 1.9 m/s | 5.4 |
| 1998 | 31.2°C | 28.6°C | 25.9°C | 33.0°C | 24.5°C | 175 mm | 80% | 1.9 m/s | 5.8 |
| 1997 | 31.2°C | 28.7°C | 26.1°C | 33.3°C | 23.5°C | 127 mm | 74% | 1.7 m/s | 5.4 |
| 1996 | 30.3°C | 27.7°C | 25.1°C | 31.4°C | 23.2°C | 124 mm | 79% | 2.2 m/s | 5.6 |
| 1995 | 30.5°C | 28.0°C | 25.4°C | 32.4°C | 23.3°C | 300 mm | 83% | 2.7 m/s | 5.5 |
| 1994 | 29.7°C | 27.2°C | 24.7°C | 31.1°C | 23.3°C | 208 mm | 81% | 2.1 m/s | 5.3 |
| 1993 | 30.3°C | 27.9°C | 25.4°C | 33.1°C | 23.6°C | 184 mm | 80% | 2.1 m/s | 5.7 |
| 1992 | 29.7°C | 27.4°C | 25.1°C | 31.1°C | 23.8°C | 237 mm | 83% | 2 m/s | 5.2 |
| 1991 | 30.4°C | 28.0°C | 25.6°C | 32.0°C | 24.2°C | 177 mm | 81% | 1.8 m/s | 5.9 |
| 1990 | 30.5°C | 28.1°C | 25.7°C | 32.1°C | 24.7°C | 232 mm | 79% | 1.4 m/s | 5.5 |
| 1989 | 30.9°C | 28.1°C | 25.2°C | 33.0°C | 23.8°C | 179 mm | 79% | 1.9 m/s | 5.9 |
| 1988 | 30.1°C | 27.6°C | 25.1°C | 32.3°C | 23.7°C | 238 mm | 81% | 1.9 m/s | 5.3 |
| 1987 | 31.6°C | 28.6°C | 25.5°C | 33.2°C | 23.7°C | 151 mm | 77% | 1.9 m/s | 5.8 |
| 1986 | 29.9°C | 27.4°C | 24.9°C | 31.7°C | 23.6°C | 225 mm | 82% | 2.2 m/s | 5.4 |
| 1985 | 30.1°C | 27.8°C | 25.4°C | 31.6°C | 24.1°C | 180 mm | 80% | 2.5 m/s | 5.4 |
| 1984 ❄️ | 29.8°C | 27.2°C | 24.6°C | 31.3°C | 21.1°C | 141 mm | 80% | 1.8 m/s | 5.7 |
| 1983 | 30.0°C | 27.7°C | 25.5°C | 31.3°C | 24.3°C | 203 mm | 82% | 1.9 m/s | — |
| 1982 | 30.1°C | 27.5°C | 24.9°C | 31.4°C | 23.3°C | 195 mm | 80% | 2 m/s | — |
| 1981 🌧️ | 30.3°C | 27.7°C | 25.1°C | 33.1°C | 24.1°C | 327 mm | 82% | 2.7 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 30.8°C with lows near 25.7°C (mean 28.3°C), based on 45 years of NASA POWER data.
August averages 207 mm of rainfall in Fort Myers, a relatively wet time of year. The wettest on record was 327 mm in 1981.
The hottest August reached 34.4°C in 2023. The coldest dipped to 21.1°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.5°C. Daytime highs moved from 30.1°C to 31.8°C and overnight lows from 25.1°C to 26.5°C over the same span.
August is one of the warmer months of the year in Fort Myers and a relatively wet time of year, so plan for around 30.8°C daytime highs and 25.7°C at night.
Not quite — August is the 12th coolest month in Fort Myers, averaging 28.3°C.
For August in Fort Myers, pack light, breathable clothing and sun protection, with typical highs of 30.8°C and lows of 25.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 80% — quite humid.
Average wind speed in August is 2 m/s. The windiest August on record averaged 2.7 m/s (1981).
The wettest August on record was 1981 with 327 mm. On average, August sees 207 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 Fort Myers behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
