August is one of the warmer months of the year in Calne, with average highs near 22°C and lows around 11.7°C (mean 16.9°C). It is about average for rainfall, averaging 61 mm of rainfall and 77% relative humidity across the period.
August is one of the warmer months of the year in Calne. Across 45 years of records, the warmest Augusts in Calne were 1995 and 2022 — when the month averaged 20°C — while the coldest was 1986 at 14.1°C. Typical August days reach 22°C with nights near 11.7°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Calne, averaging 61 mm of rainfall. The wettest August on record was 1992 with 123 mm, while the driest was 1995 at 7 mm.
Relative humidity in Calne during August averages 77%. The most humid August was 2012 at 84%, and the least humid was 1995 at 64%.
August receives about 4.3 kWh/m²/day of solar energy in Calne. The sunniest August was 1995 at 5.4 kWh/m²/day, and the cloudiest was 2008 at 3.4.
Average wind speed in Calne during August is 3 m/s. The windiest August was 1985 at 4.1 m/s, while the calmest was 1981 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.2°C | 17.2°C | 16.9°C | 16.4°C | 17.9°C | +1.7°C |
| Avg High | 21.3°C | 22.6°C | 21.8°C | 21.2°C | 23.4°C | +2.1°C |
| Avg Low | 11.2°C | 11.8°C | 12.0°C | 11.5°C | 12.4°C | +1.2°C |
| Avg Rain | 53 mm | 61 mm | 60 mm | 76 mm | 51 mm | -2 mm |
August temperatures in Calne have risen by about 1.2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 5.1°C (2014) to a record high of 35°C (1990).
Rainfall in August is about average for rainfall, averaging 61 mm, with a wettest year of 123 mm.
One of the best times to visit Calne
August is one of the best times to visit Calne. Expect days averaging 22°C and nights around 11.7°C (mean 16.9°C) — warmer than Calne's yearly average — with moderate rainfall (61 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 | 24.7°C | 18.6°C | 12.6°C | 33.0°C | 9.0°C | 27 mm | 69% | 3.1 m/s | 4.6 |
| 2024 | 23.0°C | 17.5°C | 12.0°C | 29.4°C | 7.9°C | 60 mm | 77% | 3.3 m/s | 4 |
| 2023 | 21.7°C | 16.6°C | 11.6°C | 25.4°C | 8.7°C | 62 mm | 81% | 3 m/s | 3.9 |
| 2022 | 26.6°C | 20.0°C | 13.4°C | 34.1°C | 8.6°C | 15 mm | 65% | 2.6 m/s | 5 |
| 2021 | 21.0°C | 16.3°C | 11.5°C | 23.2°C | 8.9°C | 46 mm | 81% | 3 m/s | 4 |
| 2020 | 23.5°C | 18.4°C | 13.4°C | 33.7°C | 7.3°C | 95 mm | 76% | 3.3 m/s | 3.9 |
| 2019 | 22.4°C | 17.4°C | 12.4°C | 29.9°C | 8.9°C | 66 mm | 77% | 3.4 m/s | 4.5 |
| 2018 | 23.0°C | 17.5°C | 12.1°C | 29.6°C | 7.0°C | 74 mm | 76% | 2.9 m/s | 4.1 |
| 2017 | 20.0°C | 15.5°C | 11.1°C | 25.8°C | 7.6°C | 75 mm | 82% | 2.9 m/s | 4.3 |
| 2016 | 22.3°C | 17.2°C | 12.1°C | 27.9°C | 8.1°C | 64 mm | 79% | 3.2 m/s | 4.4 |
| 2015 | 20.7°C | 15.9°C | 11.2°C | 27.8°C | 7.6°C | 108 mm | 80% | 3 m/s | 3.7 |
| 2014 | 19.7°C | 14.9°C | 10.2°C | 23.9°C | 5.1°C | 84 mm | 78% | 3.3 m/s | 4.3 |
| 2013 | 22.3°C | 17.1°C | 11.9°C | 30.2°C | 8.3°C | 42 mm | 77% | 3 m/s | 4.3 |
| 2012 | 20.5°C | 16.3°C | 12.1°C | 25.8°C | 6.9°C | 78 mm | 84% | 3.1 m/s | 3.9 |
| 2011 | 20.6°C | 15.8°C | 11.0°C | 26.8°C | 6.9°C | 72 mm | 77% | 2.9 m/s | 4 |
| 2010 | 20.8°C | 15.9°C | 11.0°C | 24.2°C | 6.6°C | 97 mm | 78% | 3.3 m/s | 4 |
| 2009 | 21.3°C | 16.7°C | 12.1°C | 25.5°C | 8.8°C | 63 mm | 81% | 3.3 m/s | 4 |
| 2008 | 20.4°C | 16.3°C | 12.1°C | 25.5°C | 7.1°C | 87 mm | 83% | 3.7 m/s | 3.4 |
| 2007 | 20.2°C | 15.3°C | 10.5°C | 25.5°C | 8.0°C | 40 mm | 82% | 3.1 m/s | 4.7 |
| 2006 | 21.4°C | 16.7°C | 12.0°C | 27.3°C | 8.8°C | 55 mm | 76% | 3.4 m/s | 4.2 |
| 2005 | 22.4°C | 16.8°C | 11.2°C | 28.7°C | 8.0°C | 46 mm | 75% | 2.8 m/s | 4.9 |
| 2004 | 22.2°C | 17.5°C | 12.8°C | 28.8°C | 8.3°C | 112 mm | 80% | 2.9 m/s | 4.3 |
| 2003 | 25.4°C | 19.3°C | 13.2°C | 34.7°C | 6.2°C | 20 mm | 71% | 2.5 m/s | 4.6 |
| 2002 | 21.7°C | 17.0°C | 12.2°C | 26.1°C | 9.9°C | 42 mm | 80% | 2.3 m/s | 4.1 |
| 2001 | 21.8°C | 16.9°C | 12.0°C | 26.7°C | 8.6°C | 76 mm | 80% | 2.8 m/s | 3.9 |
| 2000 | 21.4°C | 16.6°C | 11.9°C | 27.0°C | 8.7°C | 55 mm | 80% | 2.8 m/s | 4.3 |
| 1999 | 20.8°C | 16.4°C | 11.9°C | 28.0°C | 7.3°C | 119 mm | 81% | 2.5 m/s | 4.1 |
| 1998 | 21.5°C | 16.0°C | 10.4°C | 27.4°C | 7.0°C | 33 mm | 78% | 2.9 m/s | 4.8 |
| 1997 | 24.1°C | 19.1°C | 14.1°C | 29.5°C | 10.5°C | 116 mm | 80% | 2.7 m/s | 4 |
| 1996 | 22.0°C | 16.7°C | 11.3°C | 29.7°C | 7.5°C | 58 mm | 75% | 3 m/s | 4.5 |
| 1995 🔥 | 26.6°C | 20.0°C | 13.3°C | 32.9°C | 8.4°C | 7 mm | 64% | 3 m/s | 5.4 |
| 1994 | 21.5°C | 16.5°C | 11.5°C | 27.0°C | 6.8°C | 52 mm | 75% | 3.2 m/s | 4.4 |
| 1993 | 20.3°C | 15.0°C | 9.7°C | 25.1°C | 5.8°C | 39 mm | 76% | 2.9 m/s | 4.4 |
| 1992 🌧️ | 20.2°C | 15.6°C | 11.1°C | 26.6°C | 7.0°C | 123 mm | 79% | 3.7 m/s | 4 |
| 1991 | 23.6°C | 17.7°C | 11.9°C | 27.3°C | 7.8°C | 21 mm | 74% | 2.9 m/s | 4.7 |
| 1990 | 25.0°C | 19.0°C | 12.9°C | 35.0°C | 8.9°C | 36 mm | 70% | 2.9 m/s | 4.5 |
| 1989 | 23.1°C | 17.3°C | 11.5°C | 27.6°C | 7.4°C | 36 mm | 71% | 3.3 m/s | 4.7 |
| 1988 | 20.6°C | 15.4°C | 10.3°C | 27.9°C | 6.2°C | 41 mm | 77% | 3.3 m/s | 4.1 |
| 1987 | 21.6°C | 16.3°C | 11.0°C | 28.6°C | 6.5°C | 28 mm | 77% | 2.7 m/s | 4.1 |
| 1986 ❄️ | 18.6°C | 14.1°C | 9.5°C | 22.3°C | 5.4°C | 109 mm | 78% | 3.1 m/s | 3.5 |
| 1985 | 18.7°C | 14.6°C | 10.5°C | 24.1°C | 8.0°C | 88 mm | 82% | 4.1 m/s | 3.9 |
| 1984 | 23.9°C | 18.3°C | 12.8°C | 29.5°C | 7.1°C | 48 mm | 72% | 2.5 m/s | 4.6 |
| 1983 | 23.0°C | 17.4°C | 11.9°C | 29.5°C | 6.1°C | 26 mm | 76% | 2.7 m/s | — |
| 1982 | 20.5°C | 15.9°C | 11.3°C | 25.4°C | 7.4°C | 57 mm | 79% | 3.3 m/s | — |
| 1981 | 22.1°C | 16.9°C | 11.6°C | 26.9°C | 7.0°C | 42 mm | 79% | 2.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 22°C with lows near 11.7°C (mean 16.9°C), based on 45 years of NASA POWER data.
August averages 61 mm of rainfall in Calne, about average for rainfall. The wettest on record was 123 mm in 1992.
The hottest August reached 35°C in 1990. The coldest dipped to 5.1°C in 2014.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.2°C. Daytime highs moved from 21.6°C to 23.4°C and overnight lows from 11.6°C to 12.2°C over the same span.
August is one of the warmer months of the year in Calne and about average for rainfall, so plan for around 22°C daytime highs and 11.7°C at night.
Not quite — August is the 11th coolest month in Calne, averaging 16.9°C.
For August in Calne, pack light layers you can adjust through the day, with typical highs of 22°C and lows of 11.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 77% — quite humid.
Average wind speed in August is 3 m/s. The windiest August on record averaged 4.1 m/s (1985).
The wettest August on record was 1992 with 123 mm. On average, August sees 61 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 Calne 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.
