August is one of the warmer months of the year in Baytown, with average highs near 34.5°C and lows around 24.3°C (mean 29.4°C). It is about average for rainfall, averaging 120 mm of rainfall and 73% relative humidity across the period.
August is one of the warmer months of the year in Baytown. Across 45 years of records, the warmest August in Baytown was 2023 — when the month averaged 33.9°C — while the coldest was 1989 at 26.9°C. Typical August days reach 34.5°C with nights near 24.3°C. The long-term trend is warming, about 0.5°C per decade.
August is about average for rainfall in Baytown, averaging 120 mm of rainfall. The wettest August on record was 2017 with 890 mm, while the driest was 2023 at 6 mm.
Relative humidity in Baytown during August averages 73%. The most humid August was 1983 at 84%, and the least humid was 2023 at 53%.
August receives about 5.9 kWh/m²/day of solar energy in Baytown. The sunniest August was 2023 at 6.8 kWh/m²/day, and the cloudiest was 2017 at 5.
Average wind speed in Baytown during August is 1.3 m/s. The windiest August was 2017 at 1.8 m/s, while the calmest were 1991 and 2005 at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.8°C | 29.0°C | 29.1°C | 30.0°C | 30.7°C | +1.9°C |
| Avg High | 33.9°C | 34.0°C | 33.9°C | 35.4°C | 36.2°C | +2.3°C |
| Avg Low | 23.7°C | 24.0°C | 24.2°C | 24.7°C | 25.2°C | +1.5°C |
| Avg Rain | 114 mm | 103 mm | 121 mm | 166 mm | 75 mm | -39 mm |
August temperatures in Baytown have risen by about 1.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 15.7°C (1989) to a record high of 44.4°C (2023).
Rainfall in August is about average for rainfall, averaging 120 mm, with a wettest year of 890 mm.
A quieter season to visit Baytown
If your dates are flexible, the more temperate months of October and April tend to be the most comfortable for visiting Baytown. That said, August — with days averaging 34.5°C and nights around 24.3°C (mean 29.4°C) and higher rainfall (120 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 | 36.0°C | 30.5°C | 24.9°C | 39.0°C | 22.9°C | 110 mm | 71% | 1.1 m/s | 5.8 |
| 2024 | 35.1°C | 30.0°C | 25.0°C | 38.8°C | 23.3°C | 52 mm | 75% | 1.1 m/s | 5.9 |
| 2023 🔥 | 41.0°C | 33.9°C | 26.9°C | 44.4°C | 22.8°C | 6 mm | 53% | 1.7 m/s | 6.8 |
| 2022 | 34.7°C | 30.0°C | 25.3°C | 39.0°C | 23.8°C | 160 mm | 75% | 1.4 m/s | 5.5 |
| 2021 | 34.1°C | 29.4°C | 24.7°C | 37.8°C | 22.7°C | 72 mm | 76% | 1.2 m/s | 5.9 |
| 2020 | 36.2°C | 30.4°C | 24.5°C | 39.0°C | 20.7°C | 48 mm | 69% | 1.4 m/s | 6.3 |
| 2019 | 36.8°C | 31.2°C | 25.7°C | 40.5°C | 24.0°C | 57 mm | 70% | 1.3 m/s | 5.9 |
| 2018 | 35.4°C | 30.0°C | 24.5°C | 38.5°C | 20.6°C | 62 mm | 71% | 1.4 m/s | 6 |
| 2017 🌧️ | 32.5°C | 28.5°C | 24.5°C | 36.9°C | 20.2°C | 890 mm | 81% | 1.8 m/s | 5 |
| 2016 | 32.4°C | 28.5°C | 24.6°C | 37.3°C | 23.0°C | 232 mm | 81% | 1.2 m/s | 5.2 |
| 2015 | 35.5°C | 29.7°C | 23.9°C | 41.3°C | 19.3°C | 109 mm | 71% | 1.2 m/s | 6.1 |
| 2014 | 34.5°C | 29.4°C | 24.2°C | 37.6°C | 21.0°C | 79 mm | 73% | 1.4 m/s | 5.7 |
| 2013 | 35.9°C | 30.1°C | 24.2°C | 39.8°C | 20.6°C | 67 mm | 69% | 1.4 m/s | 6.1 |
| 2012 | 35.1°C | 29.7°C | 24.3°C | 37.8°C | 22.0°C | 84 mm | 72% | 1.5 m/s | 6 |
| 2011 | 39.7°C | 32.8°C | 25.8°C | 42.0°C | 23.7°C | 19 mm | 58% | 1.5 m/s | 6.7 |
| 2010 | 36.3°C | 30.6°C | 24.8°C | 39.1°C | 21.0°C | 58 mm | 70% | 1.2 m/s | 5.9 |
| 2009 | 35.1°C | 30.0°C | 24.8°C | 38.2°C | 22.3°C | 83 mm | 71% | 1.2 m/s | 6 |
| 2008 | 33.0°C | 28.5°C | 24.1°C | 38.3°C | 22.8°C | 198 mm | 78% | 1.3 m/s | 5.5 |
| 2007 | 32.5°C | 28.5°C | 24.4°C | 37.2°C | 22.7°C | 137 mm | 82% | 1.1 m/s | 5.8 |
| 2006 | 32.7°C | 28.4°C | 24.1°C | 35.9°C | 18.5°C | 79 mm | 80% | 1.1 m/s | 6 |
| 2005 | 34.8°C | 29.8°C | 24.9°C | 38.0°C | 22.6°C | 73 mm | 72% | 1 m/s | 5.9 |
| 2004 | 33.2°C | 28.1°C | 22.9°C | 37.0°C | 16.6°C | 64 mm | 74% | 1.4 m/s | 6.1 |
| 2003 | 34.1°C | 29.2°C | 24.3°C | 39.9°C | 21.8°C | 167 mm | 75% | 1.3 m/s | 5.5 |
| 2002 | 32.5°C | 28.3°C | 24.0°C | 36.3°C | 20.7°C | 183 mm | 80% | 1.3 m/s | 5.8 |
| 2001 | 33.9°C | 29.1°C | 24.3°C | 37.8°C | 22.4°C | 196 mm | 75% | 1.4 m/s | 5.3 |
| 2000 | 36.8°C | 30.6°C | 24.4°C | 43.7°C | 21.9°C | 32 mm | 65% | 1.4 m/s | 6.4 |
| 1999 | 37.0°C | 30.8°C | 24.6°C | 41.6°C | 18.6°C | 31 mm | 66% | 1.3 m/s | 6.3 |
| 1998 | 34.3°C | 29.5°C | 24.8°C | 41.7°C | 23.1°C | 155 mm | 74% | 1.2 m/s | 5.5 |
| 1997 | 35.3°C | 29.8°C | 24.2°C | 38.8°C | 19.3°C | 59 mm | 70% | 1.4 m/s | 6.4 |
| 1996 | 32.1°C | 28.1°C | 24.0°C | 38.2°C | 21.7°C | 241 mm | 78% | 1.4 m/s | 5.4 |
| 1995 | 33.1°C | 28.8°C | 24.5°C | 36.9°C | 22.4°C | 110 mm | 78% | 1.1 m/s | 5.8 |
| 1994 | 32.7°C | 28.1°C | 23.6°C | 35.6°C | 22.0°C | 167 mm | 77% | 1.2 m/s | 5.7 |
| 1993 | 35.8°C | 30.2°C | 24.7°C | 38.9°C | 23.8°C | 60 mm | 69% | 1.4 m/s | 6.2 |
| 1992 | 32.1°C | 27.0°C | 21.9°C | 36.5°C | 15.7°C | 72 mm | 74% | 1.1 m/s | 5.9 |
| 1991 | 31.7°C | 27.7°C | 23.6°C | 34.6°C | 22.0°C | 103 mm | 80% | 1 m/s | 5.3 |
| 1990 | 35.6°C | 29.7°C | 23.8°C | 39.4°C | 19.7°C | 36 mm | 67% | 1.3 m/s | 6.3 |
| 1989 ❄️ | 31.2°C | 26.9°C | 22.6°C | 34.1°C | 15.7°C | 83 mm | 81% | 1.3 m/s | 6.1 |
| 1988 | 34.8°C | 29.6°C | 24.4°C | 39.7°C | 22.3°C | 72 mm | 72% | 1.3 m/s | 5.8 |
| 1987 | 34.1°C | 29.2°C | 24.3°C | 37.8°C | 22.3°C | 75 mm | 75% | 1.3 m/s | 6 |
| 1986 | 34.5°C | 28.7°C | 23.0°C | 40.5°C | 15.8°C | 113 mm | 69% | 1.4 m/s | 5.6 |
| 1985 | 35.7°C | 29.8°C | 23.8°C | 39.0°C | 21.2°C | 72 mm | 69% | 1.4 m/s | 6.3 |
| 1984 | 34.0°C | 28.7°C | 23.4°C | 38.8°C | 21.2°C | 92 mm | 72% | 1.4 m/s | 5.7 |
| 1983 | 31.3°C | 27.5°C | 23.7°C | 33.9°C | 22.8°C | 267 mm | 84% | 1.2 m/s | — |
| 1982 | 35.5°C | 29.9°C | 24.2°C | 38.5°C | 22.3°C | 65 mm | 70% | 1.4 m/s | — |
| 1981 | 33.8°C | 28.8°C | 23.8°C | 36.3°C | 19.1°C | 189 mm | 74% | 1.3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 34.5°C with lows near 24.3°C (mean 29.4°C), based on 45 years of NASA POWER data.
August averages 120 mm of rainfall in Baytown, about average for rainfall. The wettest on record was 890 mm in 2017.
The hottest August reached 44.4°C in 2023. The coldest dipped to 15.7°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.9°C. Daytime highs moved from 34.1°C to 36.2°C and overnight lows from 23.8°C to 25.4°C over the same span.
August is one of the warmer months of the year in Baytown and about average for rainfall, so plan for around 34.5°C daytime highs and 24.3°C at night.
Not quite — August is the 12th coolest month in Baytown, averaging 29.4°C.
For August in Baytown, pack light, breathable clothing and sun protection, with typical highs of 34.5°C and lows of 24.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 73% — moderately humid.
Average wind speed in August is 1.3 m/s. The windiest August on record averaged 1.8 m/s (2017).
The wettest August on record was 2017 with 890 mm. On average, August sees 120 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 Baytown 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.
