July is one of the warmer months of the year in Calne, with average highs near 22.1°C and lows around 11.8°C (mean 17°C). It is about average for rainfall, averaging 58 mm of rainfall and 76% relative humidity across the period.
July is one of the warmer months of the year in Calne. Across 45 years of records, the warmest July in Calne was 2006 — when the month averaged 19.9°C — while the coldest was 1988 at 14.5°C. Typical July days reach 22.1°C with nights near 11.8°C. The long-term trend is warming, about 0.2°C per decade.
July is about average for rainfall in Calne, averaging 58 mm of rainfall. The wettest July on record was 2007 with 148 mm, while the driest was 2022 at 14 mm.
Relative humidity in Calne during July averages 76%. The most humid July was 2007 at 84%, and the least humid was 1990 at 67%.
July receives about 5.1 kWh/m²/day of solar energy in Calne. The sunniest July was 2013 at 6.1 kWh/m²/day, and the cloudiest was 2023 at 4.4.
Average wind speed in Calne during July is 2.9 m/s. The windiest July was 1988 at 3.9 m/s, while the calmest was 1983 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.7°C | 17.0°C | 16.5°C | 17.2°C | 17.5°C | +0.8°C |
| Avg High | 21.8°C | 22.3°C | 21.3°C | 22.4°C | 22.7°C | +0.9°C |
| Avg Low | 11.5°C | 11.6°C | 11.7°C | 12.0°C | 12.4°C | +0.9°C |
| Avg Rain | 48 mm | 49 mm | 76 mm | 57 mm | 62 mm | +14 mm |
July temperatures in Calne have risen by about 0.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 5.9°C (1990) to a record high of 35.6°C (2022).
Rainfall in July is about average for rainfall, averaging 58 mm, with a wettest year of 148 mm.
One of the best times to visit Calne
July is one of the best times to visit Calne. Expect days averaging 22.1°C and nights around 11.8°C (mean 17°C) — warmer than Calne's yearly average — with moderate rainfall (58 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 | 25.2°C | 19.3°C | 13.5°C | 32.5°C | 9.4°C | 42 mm | 69% | 2.7 m/s | 5.6 |
| 2024 | 21.5°C | 16.6°C | 11.7°C | 29.7°C | 8.5°C | 70 mm | 79% | 2.7 m/s | 5 |
| 2023 | 20.4°C | 16.0°C | 11.7°C | 26.0°C | 8.4°C | 114 mm | 80% | 3.7 m/s | 4.4 |
| 2022 | 25.2°C | 19.0°C | 12.9°C | 35.6°C | 8.5°C | 14 mm | 67% | 2.7 m/s | 5.4 |
| 2021 | 22.5°C | 17.9°C | 13.4°C | 29.0°C | 10.7°C | 75 mm | 80% | 2.5 m/s | 5.3 |
| 2020 | 21.4°C | 16.3°C | 11.2°C | 31.6°C | 7.5°C | 57 mm | 76% | 3.4 m/s | 4.8 |
| 2019 | 23.4°C | 18.1°C | 12.7°C | 32.5°C | 8.2°C | 52 mm | 75% | 2.7 m/s | 5.5 |
| 2018 | 26.0°C | 19.8°C | 13.7°C | 31.2°C | 10.8°C | 27 mm | 68% | 2.4 m/s | 5.8 |
| 2017 | 22.0°C | 17.2°C | 12.4°C | 29.6°C | 8.6°C | 108 mm | 76% | 3.1 m/s | 5 |
| 2016 | 20.9°C | 16.3°C | 11.7°C | 29.5°C | 8.1°C | 31 mm | 81% | 3 m/s | 4.9 |
| 2015 | 21.5°C | 16.3°C | 11.1°C | 29.1°C | 6.9°C | 77 mm | 75% | 3.5 m/s | 4.9 |
| 2014 | 23.0°C | 17.5°C | 12.0°C | 27.7°C | 8.3°C | 36 mm | 76% | 2.6 m/s | 5.8 |
| 2013 | 24.8°C | 18.8°C | 12.8°C | 30.7°C | 8.0°C | 50 mm | 73% | 2.7 m/s | 6.1 |
| 2012 | 19.2°C | 15.0°C | 10.8°C | 26.4°C | 7.3°C | 100 mm | 83% | 2.9 m/s | 4.8 |
| 2011 | 20.8°C | 15.7°C | 10.6°C | 24.7°C | 7.0°C | 52 mm | 73% | 2.7 m/s | 4.9 |
| 2010 | 22.6°C | 17.6°C | 12.5°C | 27.1°C | 9.6°C | 37 mm | 74% | 3.3 m/s | 4.7 |
| 2009 | 20.4°C | 16.0°C | 11.6°C | 29.2°C | 8.2°C | 98 mm | 79% | 3.7 m/s | 4.7 |
| 2008 | 20.8°C | 16.0°C | 11.3°C | 27.5°C | 7.1°C | 78 mm | 80% | 3.3 m/s | 4.8 |
| 2007 🌧️ | 18.8°C | 14.9°C | 10.9°C | 21.9°C | 7.1°C | 148 mm | 84% | 3.5 m/s | 4.7 |
| 2006 🔥 | 26.1°C | 19.9°C | 13.7°C | 34.2°C | 9.2°C | 56 mm | 70% | 2.6 m/s | 5.9 |
| 2005 | 22.5°C | 17.5°C | 12.5°C | 29.4°C | 8.8°C | 66 mm | 75% | 3 m/s | 4.9 |
| 2004 | 20.6°C | 15.7°C | 10.9°C | 26.3°C | 7.9°C | 57 mm | 78% | 2.9 m/s | 4.7 |
| 2003 | 22.3°C | 17.4°C | 12.5°C | 31.0°C | 9.4°C | 57 mm | 78% | 2.9 m/s | 4.5 |
| 2002 | 20.3°C | 15.6°C | 10.9°C | 27.3°C | 7.8°C | 87 mm | 81% | 2.8 m/s | 4.8 |
| 2001 | 22.1°C | 17.0°C | 11.9°C | 28.7°C | 7.4°C | 59 mm | 77% | 2.8 m/s | 4.7 |
| 2000 | 19.4°C | 15.1°C | 10.8°C | 24.0°C | 7.5°C | 55 mm | 82% | 2.4 m/s | 5 |
| 1999 | 23.0°C | 17.4°C | 11.8°C | 28.7°C | 7.5°C | 21 mm | 76% | 2.9 m/s | 5.9 |
| 1998 | 19.3°C | 15.1°C | 10.8°C | 22.7°C | 7.5°C | 47 mm | 82% | 3.3 m/s | 4.7 |
| 1997 | 22.2°C | 16.9°C | 11.6°C | 26.2°C | 7.4°C | 38 mm | 75% | 2.6 m/s | 5.4 |
| 1996 | 22.3°C | 16.5°C | 10.8°C | 29.0°C | 6.3°C | 40 mm | 74% | 2.8 m/s | 5.5 |
| 1995 | 25.0°C | 18.9°C | 12.8°C | 30.6°C | 9.0°C | 36 mm | 72% | 2.9 m/s | 5.2 |
| 1994 | 23.6°C | 17.9°C | 12.2°C | 28.7°C | 9.2°C | 35 mm | 76% | 2.6 m/s | 5.9 |
| 1993 | 19.8°C | 15.2°C | 10.6°C | 24.1°C | 5.9°C | 65 mm | 80% | 3.4 m/s | 5.1 |
| 1992 | 21.6°C | 16.7°C | 11.9°C | 26.9°C | 8.6°C | 104 mm | 78% | 2.9 m/s | 4.6 |
| 1991 | 22.1°C | 17.1°C | 12.1°C | 27.2°C | 9.8°C | 74 mm | 78% | 3.3 m/s | 5 |
| 1990 | 24.4°C | 18.0°C | 11.5°C | 32.1°C | 5.9°C | 28 mm | 67% | 3.3 m/s | 5.9 |
| 1989 | 25.1°C | 18.9°C | 12.7°C | 32.3°C | 8.3°C | 29 mm | 69% | 2.9 m/s | 5.7 |
| 1988 ❄️ | 18.5°C | 14.5°C | 10.4°C | 22.1°C | 8.8°C | 90 mm | 82% | 3.9 m/s | 4.5 |
| 1987 | 20.9°C | 16.0°C | 11.1°C | 26.7°C | 6.9°C | 49 mm | 78% | 2.8 m/s | 4.7 |
| 1986 | 20.9°C | 15.9°C | 10.9°C | 26.1°C | 6.7°C | 49 mm | 77% | 2.9 m/s | 4.7 |
| 1985 | 20.9°C | 15.9°C | 10.9°C | 26.8°C | 7.7°C | 53 mm | 79% | 3 m/s | 5 |
| 1984 | 23.7°C | 17.5°C | 11.2°C | 28.0°C | 6.5°C | 22 mm | 69% | 2.7 m/s | 5.8 |
| 1983 | 24.5°C | 19.3°C | 14.1°C | 28.3°C | 8.5°C | 48 mm | 79% | 2.1 m/s | — |
| 1982 | 21.6°C | 16.5°C | 11.3°C | 26.0°C | 8.0°C | 43 mm | 79% | 2.8 m/s | — |
| 1981 | 20.1°C | 15.4°C | 10.8°C | 24.5°C | 8.1°C | 50 mm | 82% | 2.9 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 22.1°C with lows near 11.8°C (mean 17°C), based on 45 years of NASA POWER data.
July averages 58 mm of rainfall in Calne, about average for rainfall. The wettest on record was 148 mm in 2007.
The hottest July reached 35.6°C in 2022. The coldest dipped to 5.9°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.9°C. Daytime highs moved from 22.2°C to 23°C and overnight lows from 11.7°C to 12.6°C over the same span.
July is one of the warmer months of the year in Calne and about average for rainfall, so plan for around 22.1°C daytime highs and 11.8°C at night.
Not quite — July is the 12th coolest month in Calne, averaging 17°C.
For July in Calne, pack light layers you can adjust through the day, with typical highs of 22.1°C and lows of 11.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 76% — quite humid.
Average wind speed in July is 2.9 m/s. The windiest July on record averaged 3.9 m/s (1988).
The wettest July on record was 2007 with 148 mm. On average, July sees 58 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
