July is one of the warmer months of the year in Chester, with average highs near 19.4°C and lows around 11.1°C (mean 15.3°C). It is about average for rainfall, averaging 71 mm of rainfall and 82% 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 2006 — when the month averaged 17.7°C — while the coldest was 1988 at 13.4°C. Typical July days reach 19.4°C with nights near 11.1°C. The long-term trend is warming, about 0.2°C per decade.
July is about average for rainfall in Chester, averaging 71 mm of rainfall. The wettest July on record was 2007 with 174 mm, while the driest was 2006 at 24 mm.
Relative humidity in Chester during July averages 82%. The most humid July was 2007 at 85%, and the least humid was 1990 at 77%.
July receives about 4.9 kWh/m²/day of solar energy in Chester. The sunniest July was 2006 at 6 kWh/m²/day, and the cloudiest was 2010 at 4.1.
Average wind speed in Chester during July is 2.5 m/s. The windiest July was 1988 at 3.3 m/s, while the calmest was 1983 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.0°C | 15.2°C | 15.0°C | 15.5°C | 15.7°C | +0.7°C |
| Avg High | 19.1°C | 19.5°C | 19.0°C | 19.6°C | 19.7°C | +0.6°C |
| Avg Low | 10.9°C | 11.0°C | 11.1°C | 11.3°C | 11.6°C | +0.7°C |
| Avg Rain | 59 mm | 52 mm | 91 mm | 75 mm | 78 mm | +20 mm |
July temperatures in Chester have risen by about 0.6°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 6.4°C (1984) to a record high of 30.8°C (2022).
Rainfall in July is about average for rainfall, averaging 71 mm, with a wettest year of 174 mm.
One of the best times to visit Chester
July is one of the best times to visit Chester. Expect days averaging 19.4°C and nights around 11.1°C (mean 15.3°C) — warmer than Chester's yearly average — with moderate rainfall (71 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 | 20.8°C | 16.6°C | 12.4°C | 26.4°C | 9.0°C | 54 mm | 82% | 2.4 m/s | 5 |
| 2024 | 19.0°C | 15.0°C | 11.0°C | 23.8°C | 7.8°C | 89 mm | 83% | 2.1 m/s | 4.5 |
| 2023 | 18.7°C | 15.0°C | 11.3°C | 22.8°C | 8.7°C | 122 mm | 82% | 3 m/s | 4.6 |
| 2022 | 20.8°C | 16.3°C | 11.8°C | 30.8°C | 9.7°C | 42 mm | 80% | 2.4 m/s | 5 |
| 2021 | 20.8°C | 16.7°C | 12.5°C | 27.3°C | 10.2°C | 75 mm | 83% | 1.8 m/s | 5.2 |
| 2020 | 18.2°C | 14.5°C | 10.7°C | 26.6°C | 7.6°C | 89 mm | 84% | 2.8 m/s | 4.2 |
| 2019 | 20.2°C | 16.1°C | 11.9°C | 26.2°C | 7.6°C | 70 mm | 83% | 2.3 m/s | 4.8 |
| 2018 | 22.0°C | 17.1°C | 12.2°C | 25.2°C | 9.2°C | 40 mm | 80% | 1.8 m/s | 5.4 |
| 2017 | 19.4°C | 15.3°C | 11.3°C | 24.1°C | 8.8°C | 86 mm | 82% | 2.5 m/s | 5 |
| 2016 | 19.1°C | 15.2°C | 11.2°C | 27.5°C | 7.7°C | 59 mm | 84% | 2.6 m/s | 4.7 |
| 2015 | 18.2°C | 14.2°C | 10.2°C | 25.9°C | 7.3°C | 69 mm | 81% | 2.9 m/s | 4.7 |
| 2014 | 20.5°C | 16.1°C | 11.7°C | 24.5°C | 9.1°C | 55 mm | 81% | 2.2 m/s | 5.3 |
| 2013 | 21.7°C | 17.0°C | 12.2°C | 25.3°C | 8.3°C | 48 mm | 82% | 1.9 m/s | 5.6 |
| 2012 | 17.9°C | 14.2°C | 10.5°C | 24.4°C | 7.6°C | 130 mm | 85% | 2.3 m/s | 4.2 |
| 2011 | 18.1°C | 14.0°C | 9.9°C | 22.0°C | 6.9°C | 71 mm | 82% | 2.2 m/s | 5.1 |
| 2010 | 18.9°C | 15.3°C | 11.7°C | 22.2°C | 8.7°C | 118 mm | 85% | 2.8 m/s | 4.1 |
| 2009 | 18.3°C | 14.6°C | 11.0°C | 25.6°C | 8.4°C | 151 mm | 85% | 2.9 m/s | 4.7 |
| 2008 | 19.1°C | 15.0°C | 10.9°C | 24.6°C | 7.3°C | 87 mm | 84% | 2.9 m/s | 4.6 |
| 2007 🌧️ | 17.3°C | 14.0°C | 10.7°C | 20.0°C | 8.4°C | 174 mm | 85% | 2.9 m/s | 4.5 |
| 2006 🔥 | 22.7°C | 17.7°C | 12.8°C | 27.6°C | 7.9°C | 24 mm | 79% | 2 m/s | 6 |
| 2005 | 19.3°C | 15.5°C | 11.6°C | 26.0°C | 8.3°C | 83 mm | 84% | 2.4 m/s | 4.7 |
| 2004 | 17.8°C | 14.0°C | 10.3°C | 22.5°C | 7.7°C | 75 mm | 84% | 2.5 m/s | 4.6 |
| 2003 | 19.8°C | 15.7°C | 11.7°C | 25.7°C | 9.0°C | 81 mm | 85% | 2.5 m/s | 4.6 |
| 2002 | 18.0°C | 14.1°C | 10.3°C | 22.8°C | 7.4°C | 73 mm | 84% | 2.2 m/s | 4.5 |
| 2001 | 19.4°C | 15.3°C | 11.1°C | 25.1°C | 6.8°C | 73 mm | 83% | 2.4 m/s | 5 |
| 2000 | 18.1°C | 14.3°C | 10.5°C | 22.5°C | 8.1°C | 88 mm | 84% | 2.1 m/s | 5 |
| 1999 | 20.4°C | 15.8°C | 11.1°C | 24.9°C | 6.5°C | 36 mm | 82% | 2.4 m/s | 5.6 |
| 1998 | 17.4°C | 13.9°C | 10.4°C | 21.2°C | 7.7°C | 70 mm | 85% | 3 m/s | 4.6 |
| 1997 | 19.7°C | 15.5°C | 11.2°C | 24.3°C | 6.9°C | 53 mm | 81% | 2.3 m/s | 5.2 |
| 1996 | 19.1°C | 14.7°C | 10.3°C | 24.5°C | 6.5°C | 41 mm | 81% | 2.5 m/s | 5.1 |
| 1995 | 21.2°C | 16.7°C | 12.2°C | 26.0°C | 8.9°C | 48 mm | 82% | 2.5 m/s | 5.2 |
| 1994 | 20.5°C | 15.6°C | 10.7°C | 24.0°C | 7.7°C | 48 mm | 81% | 1.9 m/s | 5.3 |
| 1993 | 17.4°C | 13.8°C | 10.3°C | 21.3°C | 6.7°C | 59 mm | 83% | 3.1 m/s | 4.6 |
| 1992 | 18.9°C | 14.7°C | 10.6°C | 22.8°C | 8.2°C | 73 mm | 81% | 2.4 m/s | 4.6 |
| 1991 | 20.1°C | 15.9°C | 11.8°C | 24.7°C | 9.4°C | 61 mm | 82% | 2.7 m/s | 4.7 |
| 1990 | 20.4°C | 15.6°C | 10.9°C | 25.3°C | 6.5°C | 32 mm | 77% | 2.8 m/s | 5.3 |
| 1989 | 20.8°C | 16.3°C | 11.9°C | 25.7°C | 8.9°C | 40 mm | 81% | 2.4 m/s | 5.4 |
| 1988 ❄️ | 16.6°C | 13.4°C | 10.1°C | 19.6°C | 7.6°C | 112 mm | 84% | 3.3 m/s | 4.7 |
| 1987 | 18.6°C | 14.7°C | 10.9°C | 24.3°C | 7.8°C | 74 mm | 83% | 2.7 m/s | 4.6 |
| 1986 | 18.1°C | 14.2°C | 10.4°C | 23.7°C | 6.8°C | 54 mm | 82% | 2.6 m/s | 4.3 |
| 1985 | 18.6°C | 14.8°C | 10.9°C | 23.5°C | 7.2°C | 64 mm | 83% | 2.6 m/s | 4.5 |
| 1984 | 20.0°C | 15.1°C | 10.3°C | 24.7°C | 6.4°C | 26 mm | 79% | 2.2 m/s | 5.5 |
| 1983 | 22.3°C | 17.6°C | 13.0°C | 27.4°C | 7.2°C | 82 mm | 82% | 1.7 m/s | — |
| 1982 | 19.6°C | 14.9°C | 10.3°C | 23.8°C | 7.6°C | 34 mm | 83% | 2.1 m/s | — |
| 1981 | 17.7°C | 13.9°C | 10.1°C | 21.5°C | 8.0°C | 43 mm | 84% | 2.6 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 19.4°C with lows near 11.1°C (mean 15.3°C), based on 45 years of NASA POWER data.
July averages 71 mm of rainfall in Chester, about average for rainfall. The wettest on record was 174 mm in 2007.
The hottest July reached 30.8°C in 2022. The coldest dipped to 6.4°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.6°C. Daytime highs moved from 19.6°C to 20°C and overnight lows from 10.9°C to 11.8°C over the same span.
July is one of the warmer months of the year in Chester and about average for rainfall, so plan for around 19.4°C daytime highs and 11.1°C at night.
Not quite — July is the 12th coolest month in Chester, averaging 15.3°C.
For July in Chester, pack light layers you can adjust through the day, with typical highs of 19.4°C and lows of 11.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 82% — quite humid.
Average wind speed in July is 2.5 m/s. The windiest July on record averaged 3.3 m/s (1988).
The wettest July on record was 2007 with 174 mm. On average, July sees 71 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.
