August is one of the warmer months of the year in St. Clements, with average highs near 24.5°C and lows around 15.1°C (mean 19.8°C). It is a relatively wet time of year, averaging 63 mm of rainfall and 66% relative humidity across the period.
August is one of the warmer months of the year in St. Clements. Across 45 years of records, the warmest August in St. Clements was 1983 — when the month averaged 23.2°C — while the coldest was 2004 at 15.7°C. Typical August days reach 24.5°C with nights near 15.1°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in St. Clements, averaging 63 mm of rainfall. The wettest August on record was 1985 with 184 mm, while the driest were 1984 and 1991 at 15 mm.
Relative humidity in St. Clements during August averages 66%. The most humid August was 2010 at 78%, and the least humid was 1984 at 56%.
August receives about 4.9 kWh/m²/day of solar energy in St. Clements. The sunniest Augusts were 2001 and 2011 at 5.6 kWh/m²/day, and the cloudiest was 2021 at 4.
Average wind speed in St. Clements during August is 3.5 m/s. The windiest August was 1995 at 4.4 m/s, while the calmest was 2017 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.8°C | 20.1°C | 19.3°C | 19.8°C | 20.4°C | +0.6°C |
| Avg High | 24.6°C | 25.1°C | 23.8°C | 24.4°C | 24.9°C | +0.3°C |
| Avg Low | 14.9°C | 15.1°C | 14.7°C | 15.2°C | 15.9°C | +1°C |
| Avg Rain | 65 mm | 53 mm | 73 mm | 65 mm | 60 mm | -5 mm |
August temperatures in St. Clements have stayed relatively stable across the record.
August has ranged from a record low of 4.9°C (1982) to a record high of 35.2°C (2018).
Rainfall in August is a relatively wet time of year, averaging 63 mm, with a wettest year of 184 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
One of the best times to visit St. Clements
August is one of the best times to visit St. Clements. Expect days averaging 24.5°C and nights around 15.1°C (mean 19.8°C) — warmer than St. Clements's yearly average — with moderate rainfall (63 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 | 25.3°C | 20.6°C | 16.0°C | 29.8°C | 11.2°C | 53 mm | 69% | 3.5 m/s | 4.4 |
| 2024 | 24.6°C | 20.5°C | 16.3°C | 31.1°C | 11.6°C | 55 mm | 70% | 3.6 m/s | 4.8 |
| 2023 | 24.4°C | 20.2°C | 15.9°C | 30.0°C | 11.8°C | 54 mm | 68% | 3.2 m/s | 4.6 |
| 2022 | 24.1°C | 20.2°C | 16.2°C | 28.6°C | 12.6°C | 52 mm | 75% | 3.2 m/s | 5.3 |
| 2021 | 25.1°C | 20.2°C | 15.3°C | 33.4°C | 9.9°C | 74 mm | 67% | 3.6 m/s | 4 |
| 2020 | 25.9°C | 20.9°C | 15.8°C | 30.6°C | 9.8°C | 70 mm | 64% | 3.5 m/s | 5.2 |
| 2019 | 24.3°C | 19.8°C | 15.2°C | 32.8°C | 9.9°C | 35 mm | 61% | 3.9 m/s | 5.1 |
| 2018 | 25.6°C | 20.3°C | 14.9°C | 35.2°C | 10.4°C | 33 mm | 61% | 3.4 m/s | 4.9 |
| 2017 | 23.8°C | 19.5°C | 15.3°C | 29.0°C | 9.9°C | 37 mm | 63% | 2.6 m/s | 5.2 |
| 2016 | 24.3°C | 19.8°C | 15.3°C | 29.1°C | 11.8°C | 57 mm | 70% | 3.4 m/s | 5.1 |
| 2015 | 23.7°C | 19.1°C | 14.5°C | 31.5°C | 8.1°C | 73 mm | 71% | 3.6 m/s | 4.6 |
| 2014 | 23.6°C | 19.3°C | 15.0°C | 29.1°C | 8.3°C | 109 mm | 74% | 3.2 m/s | 4.6 |
| 2013 | 24.9°C | 19.9°C | 15.0°C | 31.2°C | 8.6°C | 43 mm | 67% | 3 m/s | 5.2 |
| 2012 | 24.8°C | 20.0°C | 15.2°C | 32.8°C | 11.0°C | 87 mm | 65% | 3.5 m/s | 5.3 |
| 2011 | 25.8°C | 21.1°C | 16.3°C | 32.5°C | 13.0°C | 32 mm | 65% | 3.5 m/s | 5.6 |
| 2010 | 23.4°C | 19.2°C | 15.1°C | 29.6°C | 9.1°C | 143 mm | 78% | 3.7 m/s | 4.4 |
| 2009 | 21.7°C | 17.8°C | 13.8°C | 28.2°C | 9.9°C | 89 mm | 77% | 3.3 m/s | 4.4 |
| 2008 | 24.7°C | 19.9°C | 15.2°C | 29.1°C | 10.3°C | 79 mm | 69% | 3.7 m/s | 5.2 |
| 2007 | 22.9°C | 18.5°C | 14.1°C | 27.8°C | 10.2°C | 54 mm | 68% | 3.8 m/s | 4.9 |
| 2006 | 25.5°C | 20.6°C | 15.6°C | 31.3°C | 10.3°C | 59 mm | 63% | 3.7 m/s | 5.3 |
| 2005 | 22.0°C | 17.9°C | 13.7°C | 29.5°C | 8.7°C | 55 mm | 73% | 4 m/s | 4.9 |
| 2004 ❄️ | 19.8°C | 15.7°C | 11.6°C | 24.4°C | 6.4°C | 126 mm | 72% | 3.7 m/s | 4.5 |
| 2003 | 27.8°C | 22.8°C | 17.7°C | 34.2°C | 10.6°C | 52 mm | 61% | 3.5 m/s | 5.2 |
| 2002 | 24.3°C | 19.6°C | 14.8°C | 29.5°C | 10.0°C | 84 mm | 67% | 3.5 m/s | 4.8 |
| 2001 | 25.3°C | 20.6°C | 15.8°C | 31.4°C | 10.9°C | 38 mm | 67% | 3.5 m/s | 5.6 |
| 2000 | 24.0°C | 19.5°C | 15.0°C | 30.7°C | 8.2°C | 92 mm | 69% | 3.7 m/s | 4.8 |
| 1999 | 23.6°C | 19.0°C | 14.5°C | 28.8°C | 10.3°C | 73 mm | 67% | 3.4 m/s | 5.1 |
| 1998 | 26.2°C | 21.2°C | 16.3°C | 30.7°C | 11.1°C | 61 mm | 65% | 3.2 m/s | 5.3 |
| 1997 | 24.8°C | 19.8°C | 14.8°C | 32.8°C | 9.3°C | 50 mm | 63% | 3.5 m/s | 5.1 |
| 1996 | 26.8°C | 21.2°C | 15.7°C | 32.2°C | 11.9°C | 46 mm | 62% | 3.7 m/s | 5.4 |
| 1995 | 26.8°C | 21.3°C | 15.8°C | 32.8°C | 13.3°C | 56 mm | 62% | 4.4 m/s | 5.1 |
| 1994 | 23.8°C | 18.9°C | 14.0°C | 30.7°C | 8.9°C | 43 mm | 61% | 3.3 m/s | 5.1 |
| 1993 | 22.8°C | 18.7°C | 14.6°C | 28.2°C | 8.6°C | 87 mm | 73% | 3.7 m/s | 4.4 |
| 1992 | 23.2°C | 18.4°C | 13.5°C | 31.1°C | 8.7°C | 78 mm | 62% | 3.5 m/s | 4.8 |
| 1991 | 27.2°C | 22.0°C | 16.8°C | 35.0°C | 12.3°C | 15 mm | 58% | 3.1 m/s | 5.5 |
| 1990 | 26.1°C | 20.8°C | 15.4°C | 32.0°C | 11.4°C | 17 mm | 58% | 3.6 m/s | 5.5 |
| 1989 | 25.7°C | 20.6°C | 15.5°C | 33.9°C | 9.5°C | 56 mm | 62% | 3.5 m/s | 4.8 |
| 1988 | 25.3°C | 20.2°C | 15.1°C | 34.0°C | 8.6°C | 35 mm | 61% | 3.9 m/s | 4.6 |
| 1987 | 22.6°C | 18.2°C | 13.8°C | 29.5°C | 8.7°C | 71 mm | 64% | 3.7 m/s | 4.6 |
| 1986 | 23.0°C | 18.1°C | 13.2°C | 30.1°C | 6.8°C | 33 mm | 64% | 3.6 m/s | 5.4 |
| 1985 🌧️ | 20.8°C | 16.8°C | 12.8°C | 28.9°C | 8.5°C | 184 mm | 73% | 3.6 m/s | 4.1 |
| 1984 | 27.8°C | 22.2°C | 16.6°C | 34.2°C | 9.1°C | 15 mm | 56% | 3.5 m/s | 4.9 |
| 1983 🔥 | 28.4°C | 23.2°C | 18.0°C | 34.7°C | 13.4°C | 39 mm | 63% | 3.4 m/s | — |
| 1982 | 22.0°C | 17.6°C | 13.3°C | 27.1°C | 4.9°C | 50 mm | 66% | 3.7 m/s | — |
| 1981 | 26.0°C | 21.0°C | 16.0°C | 30.2°C | 10.2°C | 97 mm | 66% | 3.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 24.5°C with lows near 15.1°C (mean 19.8°C), based on 45 years of NASA POWER data.
August averages 63 mm of rainfall in St. Clements, a relatively wet time of year. The wettest on record was 184 mm in 1985.
The hottest August reached 35.2°C in 2018. The coldest dipped to 4.9°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 15.3°C to 15.9°C while daytime highs eased from 25°C to 24.7°C, narrowing the gap between day and night.
August is one of the warmer months of the year in St. Clements and a relatively wet time of year, so plan for around 24.5°C daytime highs and 15.1°C at night.
Not quite — August is the 11th coolest month in St. Clements, averaging 19.8°C.
For August in St. Clements, pack light layers you can adjust through the day, with typical highs of 24.5°C and lows of 15.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 66% — moderately humid.
Average wind speed in August is 3.5 m/s. The windiest August on record averaged 4.4 m/s (1995).
The wettest August on record was 1985 with 184 mm. On average, August sees 63 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 St. Clements 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.
