July is one of the warmer months of the year in Conwy, with average highs near 16.8°C and lows around 13.6°C (mean 15.2°C). It is one of the drier months, averaging 71 mm of rainfall and 85% relative humidity across the period.
July is one of the warmer months of the year in Conwy. Across 45 years of records, the warmest July in Conwy was 2006 — when the month averaged 17.2°C — while the coldest was 1988 at 13.8°C. Typical July days reach 16.8°C with nights near 13.6°C. The long-term trend is warming, about 0.3°C per decade.
July is one of the drier months in Conwy, averaging 71 mm of rainfall. The wettest July on record was 2007 with 147 mm, while the driest was 1984 at 21 mm.
Relative humidity in Conwy during July averages 85%. The most humid July was 1998 at 87%, and the least humid were 2011 and 2018 at 82%.
July receives about 4.9 kWh/m²/day of solar energy in Conwy. The sunniest July was 2006 at 6 kWh/m²/day, and the cloudiest was 2010 at 4.1.
Average wind speed in Conwy during July is 4.2 m/s. The windiest July was 1988 at 5.8 m/s, while the calmest was 1983 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.8°C | 15.0°C | 15.2°C | 15.5°C | 15.7°C | +0.9°C |
| Avg High | 16.4°C | 16.7°C | 16.7°C | 17.1°C | 17.2°C | +0.8°C |
| Avg Low | 13.3°C | 13.3°C | 13.6°C | 14.0°C | 14.3°C | +1°C |
| Avg Rain | 56 mm | 53 mm | 84 mm | 80 mm | 84 mm | +28 mm |
July temperatures in Conwy have risen by about 1°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 9.7°C (1997) to a record high of 25.8°C (2022).
Rainfall in July is one of the drier months, averaging 71 mm, with a wettest year of 147 mm.
One of the best times to visit Conwy
July is one of the best times to visit Conwy. Expect days averaging 16.8°C and nights around 13.6°C (mean 15.2°C) — warmer than Conwy'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 | 18.0°C | 16.5°C | 15.0°C | 23.4°C | 13.0°C | 65 mm | 85% | 4.1 m/s | 5 |
| 2024 | 16.8°C | 15.2°C | 13.6°C | 20.6°C | 11.5°C | 83 mm | 85% | 3.7 m/s | 4.5 |
| 2023 | 16.9°C | 15.5°C | 14.1°C | 20.0°C | 12.7°C | 141 mm | 84% | 5.4 m/s | 4.6 |
| 2022 | 17.8°C | 16.1°C | 14.5°C | 25.8°C | 12.8°C | 49 mm | 83% | 4 m/s | 5 |
| 2021 | 18.0°C | 16.5°C | 15.1°C | 24.0°C | 12.9°C | 60 mm | 86% | 2.9 m/s | 5.2 |
| 2020 | 15.9°C | 14.6°C | 13.2°C | 21.1°C | 11.7°C | 108 mm | 85% | 4.9 m/s | 4.2 |
| 2019 | 17.5°C | 16.0°C | 14.5°C | 23.1°C | 12.1°C | 90 mm | 86% | 4.1 m/s | 4.8 |
| 2018 | 18.7°C | 16.9°C | 15.0°C | 22.2°C | 13.2°C | 48 mm | 82% | 3.1 m/s | 5.4 |
| 2017 | 16.7°C | 15.2°C | 13.7°C | 20.1°C | 11.8°C | 96 mm | 85% | 4.4 m/s | 5 |
| 2016 | 16.8°C | 15.4°C | 14.0°C | 23.3°C | 11.4°C | 74 mm | 86% | 4.6 m/s | 4.7 |
| 2015 | 16.1°C | 14.6°C | 13.1°C | 21.3°C | 11.4°C | 77 mm | 83% | 5 m/s | 4.7 |
| 2014 | 18.1°C | 16.3°C | 14.6°C | 22.4°C | 12.7°C | 59 mm | 83% | 3.7 m/s | 5.3 |
| 2013 | 18.4°C | 16.5°C | 14.6°C | 23.1°C | 11.7°C | 48 mm | 84% | 3 m/s | 5.6 |
| 2012 | 15.5°C | 14.2°C | 12.9°C | 18.1°C | 11.3°C | 113 mm | 87% | 4.1 m/s | 4.2 |
| 2011 | 16.0°C | 14.6°C | 13.1°C | 19.3°C | 11.3°C | 77 mm | 82% | 3.8 m/s | 5.1 |
| 2010 | 16.8°C | 15.4°C | 14.0°C | 18.6°C | 12.4°C | 124 mm | 86% | 4.8 m/s | 4.1 |
| 2009 | 16.9°C | 15.5°C | 14.0°C | 22.3°C | 12.7°C | 138 mm | 85% | 5 m/s | 4.7 |
| 2008 | 16.8°C | 15.1°C | 13.5°C | 21.4°C | 11.4°C | 82 mm | 86% | 4.8 m/s | 4.6 |
| 2007 🌧️ | 16.0°C | 14.7°C | 13.4°C | 18.1°C | 11.8°C | 147 mm | 86% | 4.9 m/s | 4.5 |
| 2006 🔥 | 19.4°C | 17.2°C | 14.9°C | 23.5°C | 11.8°C | 24 mm | 83% | 3.4 m/s | 6 |
| 2005 | 16.7°C | 15.2°C | 13.8°C | 21.9°C | 11.3°C | 70 mm | 86% | 3.9 m/s | 4.7 |
| 2004 | 15.7°C | 14.4°C | 13.1°C | 19.3°C | 11.4°C | 78 mm | 86% | 4.2 m/s | 4.6 |
| 2003 | 17.4°C | 15.7°C | 14.1°C | 22.2°C | 12.5°C | 73 mm | 86% | 4.5 m/s | 4.6 |
| 2002 | 15.5°C | 14.2°C | 12.9°C | 19.3°C | 11.2°C | 84 mm | 87% | 4 m/s | 4.5 |
| 2001 | 16.6°C | 15.0°C | 13.4°C | 20.9°C | 10.6°C | 58 mm | 85% | 4.1 m/s | 5 |
| 2000 | 16.0°C | 14.6°C | 13.1°C | 19.0°C | 11.0°C | 81 mm | 86% | 3.7 m/s | 5 |
| 1999 | 17.6°C | 15.6°C | 13.6°C | 22.4°C | 11.4°C | 34 mm | 85% | 4.1 m/s | 5.6 |
| 1998 | 15.4°C | 14.2°C | 13.0°C | 17.8°C | 11.7°C | 70 mm | 87% | 5.2 m/s | 4.6 |
| 1997 | 16.8°C | 15.2°C | 13.5°C | 20.4°C | 9.7°C | 60 mm | 86% | 3.6 m/s | 5.2 |
| 1996 | 16.0°C | 14.4°C | 12.8°C | 20.5°C | 10.5°C | 48 mm | 85% | 4.2 m/s | 5.1 |
| 1995 | 18.1°C | 16.2°C | 14.3°C | 23.2°C | 12.3°C | 56 mm | 86% | 4.1 m/s | 5.2 |
| 1994 | 17.0°C | 15.0°C | 13.1°C | 20.0°C | 11.7°C | 52 mm | 85% | 3.2 m/s | 5.3 |
| 1993 | 15.1°C | 13.9°C | 12.7°C | 17.5°C | 10.3°C | 62 mm | 86% | 5.4 m/s | 4.6 |
| 1992 | 16.6°C | 15.0°C | 13.4°C | 19.2°C | 11.7°C | 58 mm | 83% | 4.4 m/s | 4.6 |
| 1991 | 17.1°C | 15.4°C | 13.6°C | 21.0°C | 12.0°C | 45 mm | 87% | 4.3 m/s | 4.7 |
| 1990 | 17.2°C | 15.2°C | 13.2°C | 21.9°C | 10.4°C | 41 mm | 82% | 4.6 m/s | 5.3 |
| 1989 | 17.6°C | 15.9°C | 14.2°C | 22.8°C | 12.3°C | 29 mm | 85% | 3.7 m/s | 5.4 |
| 1988 ❄️ | 15.1°C | 13.8°C | 12.5°C | 17.0°C | 10.9°C | 110 mm | 85% | 5.8 m/s | 4.7 |
| 1987 | 16.1°C | 14.7°C | 13.2°C | 19.5°C | 11.5°C | 85 mm | 85% | 4.3 m/s | 4.6 |
| 1986 | 15.3°C | 14.0°C | 12.6°C | 18.8°C | 10.7°C | 61 mm | 86% | 4.4 m/s | 4.3 |
| 1985 | 15.9°C | 14.5°C | 13.0°C | 20.6°C | 11.2°C | 72 mm | 86% | 4.3 m/s | 4.5 |
| 1984 | 16.8°C | 15.1°C | 13.3°C | 20.5°C | 10.5°C | 21 mm | 83% | 3.6 m/s | 5.5 |
| 1983 | 18.4°C | 16.5°C | 14.5°C | 23.4°C | 11.1°C | 33 mm | 85% | 2.6 m/s | — |
| 1982 | 16.8°C | 14.9°C | 13.0°C | 19.9°C | 11.2°C | 33 mm | 85% | 3.5 m/s | — |
| 1981 | 15.5°C | 14.2°C | 13.0°C | 18.1°C | 11.1°C | 65 mm | 86% | 4.9 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 16.8°C with lows near 13.6°C (mean 15.2°C), based on 45 years of NASA POWER data.
July averages 71 mm of rainfall in Conwy, one of the drier months. The wettest on record was 147 mm in 2007.
The hottest July reached 25.8°C in 2022. The coldest dipped to 9.7°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1°C. Daytime highs moved from 16.7°C to 17.5°C and overnight lows from 13.4°C to 14.5°C over the same span.
July is one of the warmer months of the year in Conwy and one of the drier months, so plan for around 16.8°C daytime highs and 13.6°C at night.
Not quite — July is the 11th coolest month in Conwy, averaging 15.2°C.
For July in Conwy, pack light layers you can adjust through the day, with typical highs of 16.8°C and lows of 13.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 85% — quite humid.
Average wind speed in July is 4.2 m/s. The windiest July on record averaged 5.8 m/s (1988).
The wettest July on record was 2007 with 147 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 Conwy 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.
