August is one of the warmer months of the year in Saint Augustine, with average highs near 30.2°C and lows around 25.6°C (mean 27.9°C). It is a relatively wet time of year, averaging 179 mm of rainfall and 82% relative humidity across the period.
August is one of the warmer months of the year in Saint Augustine. Across 45 years of records, the warmest August in Saint Augustine was 2023 — when the month averaged 29.3°C — while the coldest were 1994, 2003 and 2012 at 26.8°C. Typical August days reach 30.2°C with nights near 25.6°C. The long-term trend is warming, about 0.2°C per decade.
August is a relatively wet time of year in Saint Augustine, averaging 179 mm of rainfall. The wettest August on record was 2008 with 399 mm, while the driest was 2007 at 97 mm.
Relative humidity in Saint Augustine during August averages 82%. The most humid August was 2003 at 87%, and the least humid was 1987 at 78%.
August receives about 5.5 kWh/m²/day of solar energy in Saint Augustine. The sunniest Augusts were 1993 and 2007 at 6.1 kWh/m²/day, and the cloudiest were 2004 and 2008 at 4.8.
Average wind speed in Saint Augustine during August is 2.1 m/s. The windiest August was 1995 at 2.9 m/s, while the calmest was 2003 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.6°C | 27.7°C | 27.7°C | 28.0°C | 28.7°C | +1.1°C |
| Avg High | 29.9°C | 30.0°C | 30.0°C | 30.3°C | 31.0°C | +1.1°C |
| Avg Low | 25.3°C | 25.5°C | 25.4°C | 25.7°C | 26.4°C | +1.1°C |
| Avg Rain | 194 mm | 155 mm | 182 mm | 188 mm | 173 mm | -21 mm |
August temperatures in Saint Augustine have risen by about 1.3°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 22.2°C (1984) to a record high of 34.7°C (1999).
Rainfall in August is a relatively wet time of year, averaging 179 mm, with a wettest year of 399 mm.
A quieter season to visit Saint Augustine
If your dates are flexible, the more temperate months of April and November tend to be the most comfortable for visiting Saint Augustine. That said, August — with days averaging 30.2°C and nights around 25.6°C (mean 27.9°C) and higher rainfall (179 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 | 31.1°C | 28.8°C | 26.6°C | 34.2°C | 25.1°C | 148 mm | 81% | 2 m/s | 5.7 |
| 2024 | 30.9°C | 28.7°C | 26.4°C | 33.6°C | 24.8°C | 168 mm | 82% | 2.4 m/s | 5.4 |
| 2023 🔥 | 31.8°C | 29.3°C | 26.8°C | 33.3°C | 24.8°C | 120 mm | 81% | 2.1 m/s | 5.9 |
| 2022 | 31.0°C | 28.5°C | 26.0°C | 32.6°C | 24.8°C | 125 mm | 80% | 1.7 m/s | 5.6 |
| 2021 | 30.1°C | 28.1°C | 26.2°C | 32.4°C | 24.9°C | 236 mm | 85% | 2.1 m/s | 5.2 |
| 2020 | 31.1°C | 28.6°C | 26.1°C | 33.6°C | 24.5°C | 244 mm | 82% | 2.1 m/s | 5.2 |
| 2019 | 30.5°C | 28.2°C | 25.9°C | 33.9°C | 24.2°C | 195 mm | 84% | 2 m/s | 5.3 |
| 2018 | 30.0°C | 27.7°C | 25.5°C | 32.0°C | 24.1°C | 146 mm | 84% | 1.8 m/s | 5.9 |
| 2017 | 30.1°C | 27.9°C | 25.7°C | 32.5°C | 23.0°C | 230 mm | 86% | 2 m/s | 5.6 |
| 2016 | 30.2°C | 28.1°C | 26.0°C | 33.5°C | 24.9°C | 167 mm | 83% | 2.4 m/s | 5.7 |
| 2015 | 30.0°C | 27.8°C | 25.6°C | 33.1°C | 24.5°C | 343 mm | 85% | 1.9 m/s | 5.3 |
| 2014 | 30.8°C | 28.3°C | 25.7°C | 33.6°C | 24.5°C | 119 mm | 81% | 2.1 m/s | 5.6 |
| 2013 | 29.8°C | 27.7°C | 25.5°C | 32.3°C | 24.1°C | 180 mm | 84% | 2 m/s | 5.5 |
| 2012 | 28.9°C | 26.8°C | 24.7°C | 31.7°C | 22.3°C | 241 mm | 87% | 2 m/s | 4.9 |
| 2011 | 31.9°C | 29.0°C | 26.0°C | 34.7°C | 24.6°C | 101 mm | 79% | 2 m/s | 5.7 |
| 2010 | 31.0°C | 28.6°C | 26.2°C | 33.8°C | 24.7°C | 153 mm | 81% | 2.2 m/s | 5.4 |
| 2009 | 29.7°C | 27.5°C | 25.3°C | 32.8°C | 22.5°C | 150 mm | 84% | 1.8 m/s | 5.3 |
| 2008 🌧️ | 29.0°C | 26.9°C | 24.9°C | 32.8°C | 23.5°C | 399 mm | 86% | 2.7 m/s | 4.8 |
| 2007 | 30.9°C | 28.5°C | 26.1°C | 33.3°C | 25.0°C | 97 mm | 81% | 1.9 m/s | 6.1 |
| 2006 | 31.2°C | 28.4°C | 25.6°C | 34.2°C | 24.6°C | 171 mm | 79% | 2 m/s | 5.7 |
| 2005 | 31.1°C | 28.8°C | 26.4°C | 33.8°C | 25.1°C | 154 mm | 82% | 2 m/s | 5.5 |
| 2004 | 29.3°C | 27.3°C | 25.2°C | 31.9°C | 24.1°C | 214 mm | 85% | 2.1 m/s | 4.8 |
| 2003 | 28.9°C | 26.8°C | 24.7°C | 33.7°C | 23.4°C | 164 mm | 87% | 1.6 m/s | 5.3 |
| 2002 | 29.4°C | 27.3°C | 25.2°C | 33.1°C | 24.2°C | 222 mm | 82% | 2.3 m/s | 5.3 |
| 2001 | 30.1°C | 27.6°C | 25.2°C | 32.2°C | 23.5°C | 119 mm | 81% | 1.9 m/s | 5.9 |
| 2000 | 30.1°C | 27.5°C | 25.0°C | 32.2°C | 23.8°C | 130 mm | 79% | 2.1 m/s | 6 |
| 1999 | 31.2°C | 28.5°C | 25.8°C | 34.7°C | 23.6°C | 114 mm | 80% | 2.2 m/s | 5.7 |
| 1998 | 29.8°C | 27.8°C | 25.8°C | 33.1°C | 24.8°C | 200 mm | 84% | 2.2 m/s | 5.5 |
| 1997 | 30.2°C | 27.9°C | 25.7°C | 32.2°C | 23.6°C | 114 mm | 79% | 2.3 m/s | 5.7 |
| 1996 | 29.6°C | 27.2°C | 24.8°C | 31.3°C | 23.3°C | 118 mm | 79% | 2 m/s | 5.4 |
| 1995 | 30.1°C | 28.0°C | 26.0°C | 34.4°C | 24.7°C | 242 mm | 82% | 2.9 m/s | 5.3 |
| 1994 ❄️ | 28.8°C | 26.8°C | 24.9°C | 32.0°C | 23.3°C | 126 mm | 84% | 2.3 m/s | 5.5 |
| 1993 | 30.8°C | 28.2°C | 25.6°C | 34.1°C | 24.0°C | 114 mm | 78% | 2.2 m/s | 6.1 |
| 1992 | 29.5°C | 27.4°C | 25.4°C | 32.0°C | 24.2°C | 204 mm | 83% | 2 m/s | 5.1 |
| 1991 | 29.3°C | 27.4°C | 25.4°C | 31.1°C | 23.8°C | 163 mm | 85% | 2.1 m/s | 5.6 |
| 1990 | 30.6°C | 28.1°C | 25.6°C | 34.2°C | 24.6°C | 156 mm | 79% | 1.9 m/s | 5.5 |
| 1989 | 29.8°C | 27.6°C | 25.4°C | 33.8°C | 23.6°C | 176 mm | 82% | 2.1 m/s | 5.7 |
| 1988 | 29.9°C | 27.7°C | 25.6°C | 31.4°C | 24.7°C | 264 mm | 82% | 2.1 m/s | 5.4 |
| 1987 | 31.6°C | 28.7°C | 25.9°C | 34.5°C | 24.4°C | 101 mm | 78% | 1.9 m/s | 5.9 |
| 1986 | 29.6°C | 27.3°C | 25.0°C | 32.1°C | 23.8°C | 213 mm | 84% | 2 m/s | 5.3 |
| 1985 | 29.0°C | 27.2°C | 25.3°C | 31.4°C | 23.6°C | 274 mm | 85% | 2.5 m/s | 4.9 |
| 1984 | 29.7°C | 27.1°C | 24.5°C | 31.8°C | 22.2°C | 145 mm | 80% | 1.9 m/s | 5.4 |
| 1983 | 30.0°C | 27.8°C | 25.7°C | 33.7°C | 24.1°C | 162 mm | 82% | 2.1 m/s | — |
| 1982 | 29.4°C | 27.2°C | 25.1°C | 31.7°C | 23.3°C | 197 mm | 82% | 2.1 m/s | — |
| 1981 | 29.7°C | 27.5°C | 25.4°C | 32.0°C | 24.3°C | 216 mm | 81% | 2.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 30.2°C with lows near 25.6°C (mean 27.9°C), based on 45 years of NASA POWER data.
August averages 179 mm of rainfall in Saint Augustine, a relatively wet time of year. The wettest on record was 399 mm in 2008.
The hottest August reached 34.7°C in 1999. The coldest dipped to 22.2°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.3°C. Daytime highs moved from 29.6°C to 31°C and overnight lows from 25.2°C to 26.4°C over the same span.
August is one of the warmer months of the year in Saint Augustine and a relatively wet time of year, so plan for around 30.2°C daytime highs and 25.6°C at night.
Not quite — August is the 11th coolest month in Saint Augustine, averaging 27.9°C.
For August in Saint Augustine, pack light, breathable clothing and sun protection, with typical highs of 30.2°C and lows of 25.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 82% — quite humid.
Average wind speed in August is 2.1 m/s. The windiest August on record averaged 2.9 m/s (1995).
The wettest August on record was 2008 with 399 mm. On average, August sees 179 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 Saint Augustine 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.
