August is one of the warmer months of the year in Stowmarket, with average highs near 20.8°C and lows around 13.7°C (mean 17.3°C). It is about average for rainfall, averaging 56 mm of rainfall and 80% relative humidity across the period.
August is one of the warmer months of the year in Stowmarket. Across 45 years of records, the warmest August in Stowmarket was 2022 — when the month averaged 19.8°C — while the coldest was 1986 at 14.7°C. Typical August days reach 20.8°C with nights near 13.7°C. The long-term trend is warming, about 0.3°C per decade.
August is about average for rainfall in Stowmarket, averaging 56 mm of rainfall. The wettest August on record was 2006 with 126 mm, while the driest was 1995 at 12 mm.
Relative humidity in Stowmarket during August averages 80%. The most humid August was 2002 at 85%, and the least humid was 1990 at 74%.
August receives about 4.3 kWh/m²/day of solar energy in Stowmarket. The sunniest Augusts were 1995 and 2022 at 4.9 kWh/m²/day, and the cloudiest were 1986 and 1987 at 3.5.
Average wind speed in Stowmarket during August is 3.6 m/s. The windiest August was 1985 at 4.7 m/s, while the calmest was 2002 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.3°C | 17.5°C | 17.3°C | 17.2°C | 18.4°C | +2.1°C |
| Avg High | 19.9°C | 21.2°C | 20.7°C | 20.7°C | 22.0°C | +2.1°C |
| Avg Low | 12.7°C | 13.7°C | 13.9°C | 13.7°C | 14.8°C | +2.1°C |
| Avg Rain | 46 mm | 50 mm | 64 mm | 69 mm | 51 mm | +5 mm |
August temperatures in Stowmarket have risen by about 1.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 8°C (1986) to a record high of 28.1°C (1990).
Rainfall in August is about average for rainfall, averaging 56 mm, with a wettest year of 126 mm.
One of the best times to visit Stowmarket
August is one of the best times to visit Stowmarket. Expect days averaging 20.8°C and nights around 13.7°C (mean 17.3°C) — warmer than Stowmarket's yearly average — with moderate rainfall (56 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 22.0°C | 18.2°C | 14.4°C | 25.9°C | 11.3°C | 19 mm | 76% | 3.6 m/s | 4.5 |
| 2024 | 22.3°C | 18.5°C | 14.7°C | 26.2°C | 11.3°C | 60 mm | 80% | 3.8 m/s | 4.5 |
| 2023 | 21.2°C | 17.5°C | 13.9°C | 24.4°C | 10.6°C | 81 mm | 81% | 3.6 m/s | 4.6 |
| 2022 🔥 | 23.5°C | 19.8°C | 16.0°C | 27.1°C | 12.0°C | 30 mm | 77% | 3.2 m/s | 4.9 |
| 2021 | 20.3°C | 17.0°C | 13.7°C | 22.7°C | 10.6°C | 48 mm | 82% | 4 m/s | 3.7 |
| 2020 | 22.4°C | 19.1°C | 15.8°C | 27.2°C | 11.9°C | 66 mm | 80% | 4 m/s | 4.1 |
| 2019 | 21.9°C | 18.1°C | 14.3°C | 25.9°C | 10.7°C | 43 mm | 78% | 3.9 m/s | 4.7 |
| 2018 | 21.5°C | 17.8°C | 14.2°C | 26.6°C | 9.6°C | 80 mm | 80% | 3.3 m/s | 4.3 |
| 2017 | 20.5°C | 17.0°C | 13.4°C | 24.1°C | 10.2°C | 78 mm | 80% | 3.3 m/s | 4.3 |
| 2016 | 21.5°C | 17.9°C | 14.4°C | 26.5°C | 10.3°C | 37 mm | 80% | 3.8 m/s | 4.7 |
| 2015 | 20.3°C | 17.0°C | 13.7°C | 24.0°C | 10.8°C | 104 mm | 82% | 3.8 m/s | 3.9 |
| 2014 | 19.4°C | 16.1°C | 12.7°C | 22.5°C | 8.3°C | 92 mm | 79% | 4.1 m/s | 4.4 |
| 2013 | 21.1°C | 17.5°C | 13.9°C | 25.5°C | 11.1°C | 44 mm | 81% | 3.4 m/s | 4.6 |
| 2012 | 20.9°C | 17.6°C | 14.3°C | 26.7°C | 9.9°C | 45 mm | 82% | 3.6 m/s | 4.4 |
| 2011 | 20.0°C | 16.5°C | 13.0°C | 24.3°C | 10.0°C | 59 mm | 80% | 3.5 m/s | 3.9 |
| 2010 | 19.7°C | 16.4°C | 13.2°C | 24.0°C | 9.7°C | 103 mm | 81% | 4.2 m/s | 4 |
| 2009 | 21.8°C | 18.2°C | 14.5°C | 24.6°C | 11.1°C | 17 mm | 78% | 3.7 m/s | 4.4 |
| 2008 | 20.7°C | 17.4°C | 14.1°C | 23.4°C | 10.5°C | 73 mm | 82% | 4.4 m/s | 3.8 |
| 2007 | 20.2°C | 16.7°C | 13.2°C | 23.5°C | 10.7°C | 49 mm | 81% | 3.8 m/s | 4.2 |
| 2006 🌧️ | 19.8°C | 16.6°C | 13.3°C | 23.2°C | 10.9°C | 126 mm | 82% | 3.9 m/s | 3.7 |
| 2005 | 19.9°C | 16.3°C | 12.6°C | 24.4°C | 10.5°C | 56 mm | 82% | 3.4 m/s | 4.2 |
| 2004 | 20.8°C | 17.7°C | 14.6°C | 24.1°C | 10.7°C | 116 mm | 85% | 3.7 m/s | 4.1 |
| 2003 | 21.9°C | 18.3°C | 14.7°C | 27.6°C | 9.8°C | 17 mm | 81% | 2.9 m/s | 4.5 |
| 2002 | 20.9°C | 17.7°C | 14.5°C | 24.4°C | 12.3°C | 60 mm | 85% | 2.6 m/s | 3.8 |
| 2001 | 20.7°C | 17.4°C | 14.1°C | 25.4°C | 10.5°C | 85 mm | 84% | 3.4 m/s | 4.1 |
| 2000 | 20.6°C | 17.0°C | 13.5°C | 22.8°C | 10.9°C | 36 mm | 83% | 2.9 m/s | 4.5 |
| 1999 | 20.3°C | 16.9°C | 13.6°C | 25.4°C | 9.4°C | 100 mm | 81% | 3.2 m/s | 4 |
| 1998 | 20.7°C | 16.7°C | 12.7°C | 27.1°C | 8.9°C | 25 mm | 78% | 3.6 m/s | 4.4 |
| 1997 | 23.3°C | 19.7°C | 16.0°C | 26.7°C | 13.1°C | 43 mm | 79% | 3.1 m/s | 4.5 |
| 1996 | 20.4°C | 16.8°C | 13.2°C | 24.8°C | 10.7°C | 100 mm | 80% | 3.7 m/s | 4.1 |
| 1995 | 22.2°C | 18.3°C | 14.4°C | 26.4°C | 10.3°C | 12 mm | 78% | 3.7 m/s | 4.9 |
| 1994 | 20.2°C | 16.8°C | 13.4°C | 23.9°C | 9.7°C | 58 mm | 80% | 3.7 m/s | 4.2 |
| 1993 | 19.5°C | 15.6°C | 11.8°C | 23.2°C | 8.9°C | 46 mm | 78% | 3.7 m/s | 4.3 |
| 1992 | 20.5°C | 16.9°C | 13.3°C | 24.9°C | 10.0°C | 76 mm | 78% | 4.6 m/s | 4.1 |
| 1991 | 22.2°C | 18.2°C | 14.1°C | 25.6°C | 10.8°C | 15 mm | 76% | 3.2 m/s | 4.6 |
| 1990 | 22.9°C | 18.8°C | 14.6°C | 28.1°C | 11.2°C | 28 mm | 74% | 3.2 m/s | 4.6 |
| 1989 | 21.3°C | 17.3°C | 13.3°C | 25.0°C | 10.5°C | 32 mm | 78% | 3.6 m/s | 4.4 |
| 1988 | 19.6°C | 15.9°C | 12.2°C | 23.5°C | 9.1°C | 34 mm | 81% | 3.8 m/s | 4.3 |
| 1987 | 19.4°C | 15.9°C | 12.5°C | 25.1°C | 8.7°C | 89 mm | 83% | 3.3 m/s | 3.5 |
| 1986 ❄️ | 18.0°C | 14.7°C | 11.4°C | 20.9°C | 8.0°C | 69 mm | 79% | 4 m/s | 3.5 |
| 1985 | 18.8°C | 15.3°C | 11.8°C | 23.1°C | 9.1°C | 49 mm | 82% | 4.7 m/s | 3.8 |
| 1984 | 21.1°C | 17.2°C | 13.3°C | 23.6°C | 9.7°C | 35 mm | 82% | 2.9 m/s | 4.6 |
| 1983 | 20.7°C | 17.1°C | 13.6°C | 23.2°C | 10.0°C | 32 mm | 82% | 3.3 m/s | — |
| 1982 | 20.1°C | 16.6°C | 13.1°C | 24.2°C | 9.7°C | 50 mm | 80% | 3.8 m/s | — |
| 1981 | 20.3°C | 16.6°C | 12.9°C | 24.4°C | 9.5°C | 20 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 20.8°C with lows near 13.7°C (mean 17.3°C), based on 45 years of NASA POWER data.
August averages 56 mm of rainfall in Stowmarket, about average for rainfall. The wettest on record was 126 mm in 2006.
The hottest August reached 28.1°C in 1990. The coldest dipped to 8°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.6°C. Daytime highs moved from 20.2°C to 21.9°C and overnight lows from 12.9°C to 14.5°C over the same span.
August is one of the warmer months of the year in Stowmarket and about average for rainfall, so plan for around 20.8°C daytime highs and 13.7°C at night.
Not quite — August is the 12th coolest month in Stowmarket, averaging 17.3°C.
For August in Stowmarket, pack light layers you can adjust through the day, with typical highs of 20.8°C and lows of 13.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 80% — quite humid.
Average wind speed in August is 3.6 m/s. The windiest August on record averaged 4.7 m/s (1985).
The wettest August on record was 2006 with 126 mm. On average, August sees 56 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 Stowmarket 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.
