July is one of the warmer months of the year in Chester, with average highs near 22.2°C and lows around 14.1°C (mean 18.2°C). It is one of the drier months, averaging 86 mm of rainfall and 85% relative humidity across the period.
July is one of the warmer months of the year in Chester. Across 45 years of records, the warmest July in Chester was 2023 — when the month averaged 20.7°C — while the coldest was 1992 at 16°C. Typical July days reach 22.2°C with nights near 14.1°C. The long-term trend is warming, about 0.4°C per decade.
July is one of the drier months in Chester, averaging 86 mm of rainfall. The wettest July on record was 2023 with 220 mm, while the driest was 1997 at 22 mm.
Relative humidity in Chester during July averages 85%. The most humid July was 2023 at 89%, and the least humid was 1991 at 79%.
July receives about 5.6 kWh/m²/day of solar energy in Chester. The sunniest July was 1997 at 6.5 kWh/m²/day, and the cloudiest was 2004 at 4.6.
Average wind speed in Chester during July is 0.8 m/s. The windiest Julys were 2014, 2016 and 2021, among others at 0.9 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.7°C | 18.0°C | 17.8°C | 18.7°C | 19.1°C | +1.4°C |
| Avg High | 21.8°C | 22.1°C | 21.8°C | 22.7°C | 23.1°C | +1.3°C |
| Avg Low | 13.6°C | 13.8°C | 13.8°C | 14.7°C | 15.2°C | +1.6°C |
| Avg Rain | 89 mm | 76 mm | 82 mm | 83 mm | 110 mm | +21 mm |
July temperatures in Chester have risen by about 1.2°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 7.4°C (1992) to a record high of 29.5°C (1999).
Rainfall in July is one of the drier months, averaging 86 mm, with a wettest year of 220 mm.
One of the best times to visit Chester
July is one of the best times to visit Chester. Expect days averaging 22.2°C and nights around 14.1°C (mean 18.2°C) — warmer than Chester's yearly average — with higher rainfall (86 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 | 23.0°C | 18.7°C | 14.5°C | 26.8°C | 11.7°C | 41 mm | 86% | 0.7 m/s | 6.1 |
| 2024 | 23.6°C | 19.5°C | 15.4°C | 27.5°C | 11.2°C | 96 mm | 87% | 0.7 m/s | 5.6 |
| 2023 🔥 🌧️ | 24.3°C | 20.7°C | 17.1°C | 27.7°C | 13.6°C | 220 mm | 89% | 0.7 m/s | 5.2 |
| 2022 | 22.8°C | 18.5°C | 14.2°C | 27.2°C | 10.2°C | 70 mm | 84% | 0.8 m/s | 6.2 |
| 2021 | 21.7°C | 18.0°C | 14.2°C | 25.3°C | 10.4°C | 116 mm | 87% | 0.9 m/s | 5.1 |
| 2020 | 23.3°C | 19.4°C | 15.5°C | 28.2°C | 11.7°C | 116 mm | 87% | 0.8 m/s | 5.3 |
| 2019 | 23.3°C | 18.9°C | 14.5°C | 28.7°C | 11.6°C | 69 mm | 84% | 0.8 m/s | 6.4 |
| 2018 | 23.6°C | 19.5°C | 15.3°C | 28.3°C | 11.4°C | 56 mm | 86% | 0.7 m/s | 6.2 |
| 2017 | 21.9°C | 17.8°C | 13.7°C | 26.8°C | 10.3°C | 115 mm | 85% | 0.8 m/s | 5.8 |
| 2016 | 22.3°C | 18.4°C | 14.6°C | 26.5°C | 11.3°C | 68 mm | 86% | 0.9 m/s | 5.8 |
| 2015 | 22.0°C | 18.1°C | 14.2°C | 26.0°C | 10.9°C | 95 mm | 86% | 0.7 m/s | 5.5 |
| 2014 | 22.4°C | 18.5°C | 14.5°C | 24.9°C | 11.0°C | 71 mm | 87% | 0.9 m/s | 5.6 |
| 2013 | 23.5°C | 19.7°C | 16.0°C | 28.6°C | 13.2°C | 111 mm | 87% | 0.8 m/s | 5.3 |
| 2012 | 22.9°C | 18.8°C | 14.7°C | 25.9°C | 12.1°C | 59 mm | 85% | 0.8 m/s | 6 |
| 2011 | 22.0°C | 18.0°C | 14.1°C | 25.8°C | 11.0°C | 79 mm | 86% | 0.8 m/s | 5.2 |
| 2010 | 22.7°C | 19.0°C | 15.2°C | 26.6°C | 10.5°C | 104 mm | 87% | 0.8 m/s | 5.7 |
| 2009 | 21.2°C | 17.6°C | 13.9°C | 25.2°C | 9.5°C | 89 mm | 87% | 0.8 m/s | 4.9 |
| 2008 | 23.4°C | 19.4°C | 15.4°C | 26.8°C | 11.1°C | 81 mm | 87% | 0.7 m/s | 5.7 |
| 2007 | 21.6°C | 17.7°C | 13.8°C | 27.5°C | 8.8°C | 92 mm | 87% | 0.7 m/s | 5.2 |
| 2006 | 22.9°C | 18.8°C | 14.8°C | 28.4°C | 11.8°C | 139 mm | 87% | 0.7 m/s | 5.5 |
| 2005 | 21.9°C | 17.7°C | 13.4°C | 28.3°C | 9.0°C | 60 mm | 86% | 0.7 m/s | 5.3 |
| 2004 | 21.3°C | 17.6°C | 13.8°C | 25.7°C | 10.2°C | 78 mm | 89% | 0.7 m/s | 4.6 |
| 2003 | 22.4°C | 18.5°C | 14.5°C | 25.6°C | 12.1°C | 66 mm | 85% | 0.8 m/s | 5.6 |
| 2002 | 21.5°C | 17.3°C | 13.0°C | 26.3°C | 8.3°C | 37 mm | 85% | 0.8 m/s | 5.6 |
| 2001 | 20.7°C | 16.6°C | 12.4°C | 25.7°C | 9.6°C | 77 mm | 84% | 0.8 m/s | 6 |
| 2000 | 21.0°C | 17.0°C | 12.9°C | 23.6°C | 10.2°C | 105 mm | 85% | 0.8 m/s | 5.8 |
| 1999 | 23.7°C | 19.3°C | 14.9°C | 29.5°C | 11.6°C | 32 mm | 81% | 0.8 m/s | 5.8 |
| 1998 | 22.3°C | 18.1°C | 13.9°C | 26.0°C | 11.0°C | 92 mm | 85% | 0.8 m/s | 5.9 |
| 1997 | 22.3°C | 17.9°C | 13.4°C | 25.8°C | 10.0°C | 22 mm | 82% | 0.8 m/s | 6.5 |
| 1996 | 20.3°C | 16.6°C | 12.9°C | 23.5°C | 10.7°C | 176 mm | 87% | 0.8 m/s | 5.1 |
| 1995 | 22.9°C | 18.7°C | 14.6°C | 27.7°C | 11.3°C | 132 mm | 87% | 0.7 m/s | 4.9 |
| 1994 | 23.4°C | 19.7°C | 15.9°C | 26.9°C | 12.6°C | 36 mm | 86% | 0.8 m/s | 5.3 |
| 1993 | 21.1°C | 17.0°C | 12.9°C | 27.8°C | 8.0°C | 74 mm | 85% | 0.8 m/s | 5.7 |
| 1992 ❄️ | 20.3°C | 16.0°C | 11.7°C | 25.5°C | 7.4°C | 83 mm | 84% | 0.8 m/s | 6.1 |
| 1991 | 22.5°C | 18.1°C | 13.6°C | 28.9°C | 10.0°C | 56 mm | 79% | 0.8 m/s | 6.1 |
| 1990 | 22.5°C | 18.4°C | 14.3°C | 26.9°C | 10.4°C | 58 mm | 84% | 0.8 m/s | 5.6 |
| 1989 | 21.5°C | 17.4°C | 13.2°C | 26.2°C | 10.0°C | 74 mm | 84% | 0.9 m/s | 5.6 |
| 1988 | 22.4°C | 18.0°C | 13.7°C | 25.5°C | 9.7°C | 193 mm | 87% | 0.7 m/s | 4.9 |
| 1987 | 22.3°C | 18.0°C | 13.8°C | 26.8°C | 9.8°C | 48 mm | 81% | 0.7 m/s | 5.7 |
| 1986 | 20.3°C | 16.4°C | 12.4°C | 25.2°C | 9.2°C | 143 mm | 85% | 0.8 m/s | 5.1 |
| 1985 | 21.7°C | 17.6°C | 13.6°C | 25.3°C | 9.6°C | 61 mm | 86% | 0.8 m/s | 5.9 |
| 1984 | 22.6°C | 18.7°C | 14.7°C | 26.3°C | 11.2°C | 54 mm | 86% | 0.8 m/s | 5.7 |
| 1983 | 21.8°C | 17.9°C | 13.9°C | 26.7°C | 9.0°C | 92 mm | 85% | 0.8 m/s | — |
| 1982 | 22.0°C | 17.6°C | 13.3°C | 25.8°C | 8.4°C | 80 mm | 84% | 0.8 m/s | — |
| 1981 | 21.9°C | 17.9°C | 13.9°C | 26.1°C | 11.5°C | 58 mm | 83% | 0.8 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 22.2°C with lows near 14.1°C (mean 18.2°C), based on 45 years of NASA POWER data.
July averages 86 mm of rainfall in Chester, one of the drier months. The wettest on record was 220 mm in 2023.
The hottest July reached 29.5°C in 1999. The coldest dipped to 7.4°C in 1992.
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°C to 23.1°C and overnight lows from 13.9°C to 15.1°C over the same span.
July is one of the warmer months of the year in Chester and one of the drier months, so plan for around 22.2°C daytime highs and 14.1°C at night.
Not quite — July is the 11th coolest month in Chester, averaging 18.2°C.
For July in Chester, pack light layers you can adjust through the day, with typical highs of 22.2°C and lows of 14.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 85% — quite humid.
Average wind speed in July is 0.8 m/s. The windiest July on record averaged 0.9 m/s (1989).
The wettest July on record was 2023 with 220 mm. On average, July sees 86 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 Chester 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.
