July is one of the warmer months of the year in Staines-upon-Thames, with average highs near 22.9°C and lows around 12.2°C (mean 17.5°C). It is about average for rainfall, averaging 55 mm of rainfall and 74% relative humidity across the period.
July is one of the warmer months of the year in Staines-upon-Thames. Across 45 years of records, the warmest July in Staines-upon-Thames was 2006 — when the month averaged 20.9°C — while the coldest was 1988 at 15.1°C. Typical July days reach 22.9°C with nights near 12.2°C. The long-term trend is warming, about 0.3°C per decade.
July is about average for rainfall in Staines-upon-Thames, averaging 55 mm of rainfall. The wettest July on record was 2012 with 98 mm, while the driest was 2022 at 7 mm.
Relative humidity in Staines-upon-Thames during July averages 74%. The most humid July was 2012 at 81%, and the least humid was 2022 at 62%.
July receives about 5.1 kWh/m²/day of solar energy in Staines-upon-Thames. The sunniest Julys were 2006 and 2018 at 6 kWh/m²/day, and the cloudiest were 1988, 1992 and 2023 at 4.5.
Average wind speed in Staines-upon-Thames during July is 3 m/s. The windiest July was 1988 at 4 m/s, while the calmest was 1983 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.1°C | 17.5°C | 17.2°C | 17.9°C | 18.2°C | +1.1°C |
| Avg High | 22.4°C | 23.0°C | 22.3°C | 23.3°C | 23.7°C | +1.3°C |
| Avg Low | 11.8°C | 12.0°C | 12.2°C | 12.5°C | 12.8°C | +1°C |
| Avg Rain | 53 mm | 44 mm | 66 mm | 54 mm | 56 mm | +3 mm |
July temperatures in Staines-upon-Thames have risen by about 1.2°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 6°C (1984) to a record high of 37.2°C (2022).
Rainfall in July is about average for rainfall, averaging 55 mm, with a wettest year of 98 mm.
One of the best times to visit Staines-upon-Thames
July is one of the best times to visit Staines-upon-Thames. Expect days averaging 22.9°C and nights around 12.2°C (mean 17.5°C) — warmer than Staines-upon-Thames's yearly average — with moderate rainfall (55 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 | 25.7°C | 19.7°C | 13.8°C | 32.9°C | 9.5°C | 56 mm | 66% | 2.7 m/s | 5.2 |
| 2024 | 22.4°C | 17.3°C | 12.1°C | 29.6°C | 8.5°C | 71 mm | 77% | 2.8 m/s | 4.9 |
| 2023 | 21.8°C | 17.0°C | 12.2°C | 27.3°C | 9.4°C | 83 mm | 75% | 3.7 m/s | 4.5 |
| 2022 | 26.7°C | 20.2°C | 13.7°C | 37.2°C | 9.3°C | 7 mm | 62% | 2.8 m/s | 5.5 |
| 2021 | 22.8°C | 18.1°C | 13.3°C | 30.1°C | 10.0°C | 70 mm | 78% | 2.6 m/s | 5.1 |
| 2020 | 22.6°C | 17.1°C | 11.6°C | 33.2°C | 8.2°C | 51 mm | 72% | 3.3 m/s | 5 |
| 2019 | 24.3°C | 18.7°C | 13.2°C | 34.9°C | 8.9°C | 67 mm | 72% | 2.7 m/s | 5.3 |
| 2018 | 27.0°C | 20.7°C | 14.4°C | 33.3°C | 11.2°C | 25 mm | 65% | 2.4 m/s | 6 |
| 2017 | 23.0°C | 17.9°C | 12.9°C | 30.2°C | 10.2°C | 81 mm | 73% | 3.2 m/s | 4.9 |
| 2016 | 22.0°C | 17.1°C | 12.2°C | 30.3°C | 8.4°C | 26 mm | 78% | 3 m/s | 5.2 |
| 2015 | 22.6°C | 17.1°C | 11.7°C | 30.9°C | 8.2°C | 79 mm | 72% | 3.5 m/s | 5 |
| 2014 | 24.0°C | 18.3°C | 12.7°C | 28.6°C | 8.4°C | 49 mm | 73% | 2.8 m/s | 5.7 |
| 2013 | 24.8°C | 18.9°C | 12.9°C | 29.8°C | 8.1°C | 45 mm | 73% | 2.7 m/s | 5.9 |
| 2012 🌧️ | 20.1°C | 15.7°C | 11.2°C | 27.9°C | 8.0°C | 98 mm | 81% | 2.9 m/s | 4.6 |
| 2011 | 21.3°C | 15.9°C | 10.6°C | 25.7°C | 7.8°C | 47 mm | 72% | 2.8 m/s | 4.8 |
| 2010 | 23.9°C | 18.5°C | 13.2°C | 29.1°C | 9.9°C | 27 mm | 70% | 3.2 m/s | 5 |
| 2009 | 21.6°C | 16.8°C | 12.0°C | 29.8°C | 8.8°C | 86 mm | 75% | 3.6 m/s | 4.9 |
| 2008 | 22.2°C | 17.0°C | 11.8°C | 28.3°C | 7.3°C | 67 mm | 74% | 3.4 m/s | 5.1 |
| 2007 | 19.9°C | 15.6°C | 11.4°C | 23.8°C | 7.8°C | 98 mm | 80% | 3.5 m/s | 4.6 |
| 2006 🔥 | 27.4°C | 20.9°C | 14.5°C | 34.6°C | 9.7°C | 34 mm | 66% | 2.8 m/s | 6 |
| 2005 | 23.1°C | 17.8°C | 12.4°C | 30.1°C | 9.2°C | 68 mm | 73% | 3.1 m/s | 4.7 |
| 2004 | 21.6°C | 16.5°C | 11.4°C | 27.9°C | 8.2°C | 55 mm | 76% | 2.8 m/s | 4.7 |
| 2003 | 22.9°C | 17.9°C | 12.9°C | 30.1°C | 10.2°C | 50 mm | 77% | 2.8 m/s | 4.9 |
| 2002 | 21.3°C | 16.5°C | 11.7°C | 29.6°C | 8.1°C | 86 mm | 79% | 2.7 m/s | 4.6 |
| 2001 | 22.9°C | 17.7°C | 12.6°C | 29.6°C | 8.1°C | 60 mm | 75% | 2.7 m/s | 5 |
| 2000 | 20.0°C | 15.4°C | 10.9°C | 24.5°C | 7.1°C | 56 mm | 79% | 2.5 m/s | 4.8 |
| 1999 | 24.0°C | 18.2°C | 12.3°C | 29.1°C | 8.3°C | 17 mm | 73% | 3 m/s | 5.9 |
| 1998 | 20.0°C | 15.5°C | 11.0°C | 24.2°C | 8.4°C | 40 mm | 80% | 3.3 m/s | 4.7 |
| 1997 | 22.6°C | 17.2°C | 11.8°C | 26.6°C | 7.5°C | 33 mm | 74% | 2.6 m/s | 5.2 |
| 1996 | 23.3°C | 17.3°C | 11.3°C | 29.8°C | 7.5°C | 38 mm | 70% | 2.8 m/s | 5.2 |
| 1995 | 25.2°C | 19.3°C | 13.3°C | 30.6°C | 10.1°C | 31 mm | 72% | 2.8 m/s | 5.4 |
| 1994 | 24.3°C | 18.5°C | 12.7°C | 29.7°C | 9.4°C | 43 mm | 76% | 2.5 m/s | 5.9 |
| 1993 | 20.7°C | 15.8°C | 11.0°C | 25.4°C | 6.1°C | 59 mm | 76% | 3.4 m/s | 4.8 |
| 1992 | 22.4°C | 17.3°C | 12.3°C | 27.5°C | 9.0°C | 91 mm | 75% | 2.9 m/s | 4.5 |
| 1991 | 23.1°C | 17.9°C | 12.7°C | 27.0°C | 10.4°C | 68 mm | 75% | 3.2 m/s | 5.1 |
| 1990 | 24.7°C | 18.2°C | 11.7°C | 31.4°C | 6.8°C | 19 mm | 65% | 3.4 m/s | 5.5 |
| 1989 | 25.3°C | 19.1°C | 12.9°C | 32.4°C | 8.6°C | 34 mm | 69% | 2.9 m/s | 5.4 |
| 1988 ❄️ | 19.5°C | 15.1°C | 10.7°C | 23.7°C | 8.0°C | 90 mm | 79% | 4 m/s | 4.5 |
| 1987 | 21.2°C | 16.4°C | 11.5°C | 28.0°C | 8.2°C | 80 mm | 77% | 2.8 m/s | 4.6 |
| 1986 | 22.1°C | 16.7°C | 11.4°C | 27.6°C | 7.5°C | 48 mm | 73% | 2.9 m/s | 4.6 |
| 1985 | 21.9°C | 16.6°C | 11.4°C | 26.4°C | 8.5°C | 52 mm | 77% | 3.1 m/s | 5 |
| 1984 | 23.3°C | 17.3°C | 11.3°C | 28.3°C | 6.0°C | 28 mm | 71% | 2.7 m/s | 5.5 |
| 1983 | 24.9°C | 19.5°C | 14.2°C | 29.0°C | 8.2°C | 71 mm | 78% | 2.2 m/s | — |
| 1982 | 22.5°C | 17.2°C | 11.8°C | 28.2°C | 8.0°C | 33 mm | 76% | 3 m/s | — |
| 1981 | 20.8°C | 16.0°C | 11.2°C | 25.9°C | 8.0°C | 41 mm | 79% | 2.9 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 22.9°C with lows near 12.2°C (mean 17.5°C), based on 45 years of NASA POWER data.
July averages 55 mm of rainfall in Staines-upon-Thames, about average for rainfall. The wettest on record was 98 mm in 2012.
The hottest July reached 37.2°C in 2022. The coldest dipped to 6°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.2°C. Daytime highs moved from 22.7°C to 23.9°C and overnight lows from 12°C to 13°C over the same span.
July is one of the warmer months of the year in Staines-upon-Thames and about average for rainfall, so plan for around 22.9°C daytime highs and 12.2°C at night.
Not quite — July is the 12th coolest month in Staines-upon-Thames, averaging 17.5°C.
For July in Staines-upon-Thames, pack light layers you can adjust through the day, with typical highs of 22.9°C and lows of 12.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 74% — moderately humid.
Average wind speed in July is 3 m/s. The windiest July on record averaged 4 m/s (1988).
The wettest July on record was 2012 with 98 mm. On average, July sees 55 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 Staines-upon-Thames 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.
