August is one of the warmer months of the year in Sugar Land, with average highs near 34.1°C and lows around 24.5°C (mean 29.3°C). It is a relatively wet time of year, averaging 116 mm of rainfall and 74% relative humidity across the period.
August is one of the warmer months of the year in Sugar Land. Across 45 years of records, the warmest August in Sugar Land was 2023 — when the month averaged 34°C — while the coldest was 1992 at 26.3°C. Typical August days reach 34.1°C with nights near 24.5°C. The long-term trend is warming, about 0.5°C per decade.
August is a relatively wet time of year in Sugar Land, averaging 116 mm of rainfall. The wettest August on record was 2017 with 720 mm, while the driest was 2023 at 6 mm.
Relative humidity in Sugar Land during August averages 74%. The most humid August was 1983 at 84%, and the least humid was 2023 at 54%.
August receives about 5.9 kWh/m²/day of solar energy in Sugar Land. The sunniest August was 2023 at 7 kWh/m²/day, and the cloudiest were 2016 and 2017 at 5.1.
Average wind speed in Sugar Land during August is 2 m/s. The windiest August was 2017 at 2.8 m/s, while the calmest were 1991 and 2005 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.7°C | 28.7°C | 28.9°C | 30.0°C | 30.6°C | +1.9°C |
| Avg High | 33.5°C | 33.3°C | 33.4°C | 35.1°C | 35.8°C | +2.3°C |
| Avg Low | 23.9°C | 24.1°C | 24.4°C | 24.9°C | 25.4°C | +1.5°C |
| Avg Rain | 117 mm | 99 mm | 123 mm | 148 mm | 78 mm | -38 mm |
August temperatures in Sugar Land have risen by about 2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 16.4°C (1989) to a record high of 43.9°C (2023).
Rainfall in August is a relatively wet time of year, averaging 116 mm, with a wettest year of 720 mm.
A quieter season to visit Sugar Land
If your dates are flexible, the more temperate months of April and October tend to be the most comfortable for visiting Sugar Land. That said, August — with days averaging 34.1°C and nights around 24.5°C (mean 29.3°C) and higher rainfall (116 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 | 36.1°C | 30.6°C | 25.1°C | 38.6°C | 23.1°C | 102 mm | 70% | 1.6 m/s | 5.4 |
| 2024 | 34.7°C | 29.9°C | 25.2°C | 38.9°C | 23.4°C | 49 mm | 76% | 1.6 m/s | 5.8 |
| 2023 🔥 | 40.9°C | 34.0°C | 27.1°C | 43.9°C | 23.7°C | 6 mm | 54% | 2.7 m/s | 7 |
| 2022 | 34.6°C | 30.1°C | 25.6°C | 38.7°C | 23.6°C | 178 mm | 74% | 2.2 m/s | 5.3 |
| 2021 | 32.6°C | 28.7°C | 24.7°C | 35.1°C | 23.3°C | 91 mm | 80% | 1.7 m/s | 5.8 |
| 2020 | 35.7°C | 30.2°C | 24.7°C | 38.5°C | 21.6°C | 44 mm | 70% | 2.1 m/s | 6.4 |
| 2019 | 36.8°C | 31.3°C | 25.9°C | 40.4°C | 23.7°C | 57 mm | 69% | 2 m/s | 5.6 |
| 2018 | 35.6°C | 30.3°C | 24.9°C | 38.7°C | 21.8°C | 49 mm | 70% | 2.2 m/s | 6 |
| 2017 🌧️ | 32.9°C | 28.9°C | 24.8°C | 36.7°C | 20.7°C | 720 mm | 79% | 2.8 m/s | 5.1 |
| 2016 | 32.1°C | 28.4°C | 24.7°C | 36.8°C | 23.0°C | 219 mm | 82% | 1.8 m/s | 5.1 |
| 2015 | 34.8°C | 29.5°C | 24.2°C | 39.4°C | 19.6°C | 115 mm | 73% | 1.8 m/s | 6.1 |
| 2014 | 34.4°C | 29.5°C | 24.6°C | 37.5°C | 21.4°C | 81 mm | 73% | 2.1 m/s | 5.6 |
| 2013 | 35.5°C | 30.0°C | 24.5°C | 39.6°C | 21.3°C | 80 mm | 69% | 2.2 m/s | 6.1 |
| 2012 | 34.5°C | 29.5°C | 24.5°C | 37.5°C | 22.3°C | 87 mm | 73% | 2.2 m/s | 6.3 |
| 2011 | 39.7°C | 32.9°C | 26.1°C | 42.1°C | 23.6°C | 16 mm | 58% | 2.4 m/s | 6.8 |
| 2010 | 35.1°C | 30.0°C | 24.8°C | 37.7°C | 21.4°C | 56 mm | 73% | 1.8 m/s | 6.3 |
| 2009 | 35.4°C | 30.3°C | 25.1°C | 39.1°C | 22.9°C | 77 mm | 69% | 2 m/s | 6 |
| 2008 | 32.8°C | 28.5°C | 24.3°C | 36.5°C | 23.0°C | 188 mm | 78% | 1.9 m/s | 5.5 |
| 2007 | 31.5°C | 27.9°C | 24.4°C | 35.1°C | 22.8°C | 155 mm | 84% | 1.6 m/s | 5.7 |
| 2006 | 32.0°C | 28.1°C | 24.3°C | 34.4°C | 19.5°C | 80 mm | 81% | 1.7 m/s | 5.9 |
| 2005 | 34.0°C | 29.5°C | 25.0°C | 37.1°C | 23.1°C | 69 mm | 74% | 1.5 m/s | 5.8 |
| 2004 | 32.7°C | 28.0°C | 23.4°C | 35.2°C | 17.8°C | 62 mm | 75% | 2.1 m/s | 6 |
| 2003 | 33.4°C | 28.9°C | 24.4°C | 39.6°C | 20.8°C | 136 mm | 76% | 1.8 m/s | 5.7 |
| 2002 | 32.1°C | 28.2°C | 24.2°C | 35.6°C | 21.4°C | 209 mm | 81% | 2 m/s | 5.7 |
| 2001 | 33.5°C | 29.0°C | 24.5°C | 37.1°C | 22.6°C | 222 mm | 76% | 2.2 m/s | 5.4 |
| 2000 | 36.6°C | 30.6°C | 24.6°C | 43.1°C | 23.0°C | 30 mm | 65% | 2.1 m/s | 6.4 |
| 1999 | 36.1°C | 30.5°C | 24.9°C | 40.8°C | 21.3°C | 30 mm | 68% | 2 m/s | 6.4 |
| 1998 | 33.8°C | 29.4°C | 24.9°C | 40.8°C | 23.0°C | 151 mm | 75% | 1.9 m/s | 5.5 |
| 1997 | 34.5°C | 29.5°C | 24.4°C | 37.0°C | 21.2°C | 45 mm | 72% | 2.1 m/s | 6.3 |
| 1996 | 31.9°C | 28.1°C | 24.3°C | 38.2°C | 22.9°C | 249 mm | 78% | 2.1 m/s | 5.3 |
| 1995 | 32.8°C | 28.8°C | 24.7°C | 35.9°C | 23.0°C | 102 mm | 77% | 1.8 m/s | 5.8 |
| 1994 | 32.0°C | 27.9°C | 23.7°C | 34.7°C | 21.8°C | 162 mm | 78% | 1.9 m/s | 5.5 |
| 1993 | 35.0°C | 29.8°C | 24.5°C | 37.4°C | 23.7°C | 45 mm | 72% | 2 m/s | 6.1 |
| 1992 ❄️ | 30.7°C | 26.3°C | 22.0°C | 34.3°C | 17.1°C | 70 mm | 78% | 1.7 m/s | 6 |
| 1991 | 31.1°C | 27.4°C | 23.6°C | 33.6°C | 22.6°C | 94 mm | 82% | 1.5 m/s | 5.8 |
| 1990 | 35.2°C | 29.6°C | 24.0°C | 38.9°C | 21.4°C | 43 mm | 68% | 1.9 m/s | 6.1 |
| 1989 | 30.8°C | 26.8°C | 22.9°C | 33.4°C | 16.4°C | 100 mm | 81% | 2.1 m/s | 5.9 |
| 1988 | 34.6°C | 29.5°C | 24.5°C | 39.4°C | 23.0°C | 62 mm | 73% | 2 m/s | 5.9 |
| 1987 | 33.9°C | 29.1°C | 24.3°C | 37.0°C | 22.6°C | 66 mm | 75% | 2.1 m/s | 6.3 |
| 1986 | 34.0°C | 28.8°C | 23.5°C | 40.7°C | 18.5°C | 112 mm | 71% | 2.1 m/s | 5.7 |
| 1985 | 35.3°C | 29.6°C | 23.9°C | 38.2°C | 22.6°C | 72 mm | 71% | 2.2 m/s | 6.5 |
| 1984 | 33.5°C | 28.5°C | 23.5°C | 37.9°C | 21.5°C | 100 mm | 73% | 2.1 m/s | 5.7 |
| 1983 | 30.9°C | 27.3°C | 23.7°C | 33.3°C | 22.6°C | 245 mm | 84% | 1.8 m/s | — |
| 1982 | 35.5°C | 29.9°C | 24.4°C | 38.9°C | 22.3°C | 67 mm | 69% | 2.3 m/s | — |
| 1981 | 32.9°C | 28.4°C | 24.0°C | 35.0°C | 21.0°C | 224 mm | 76% | 1.9 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 34.1°C with lows near 24.5°C (mean 29.3°C), based on 45 years of NASA POWER data.
August averages 116 mm of rainfall in Sugar Land, a relatively wet time of year. The wettest on record was 720 mm in 2017.
The hottest August reached 43.9°C in 2023. The coldest dipped to 16.4°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2°C. Daytime highs moved from 33.6°C to 35.8°C and overnight lows from 23.9°C to 25.5°C over the same span.
August is one of the warmer months of the year in Sugar Land and a relatively wet time of year, so plan for around 34.1°C daytime highs and 24.5°C at night.
Not quite — August is the 12th coolest month in Sugar Land, averaging 29.3°C.
For August in Sugar Land, pack light, breathable clothing and sun protection, with typical highs of 34.1°C and lows of 24.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 74% — moderately humid.
Average wind speed in August is 2 m/s. The windiest August on record averaged 2.8 m/s (2017).
The wettest August on record was 2017 with 720 mm. On average, August sees 116 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 Sugar Land 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.
