July is one of the warmer months of the year in Weymouth, with average highs near 18.2°C and lows around 14.7°C (mean 16.5°C). It is one of the drier months, averaging 51 mm of rainfall and 84% relative humidity across the period.
July is one of the warmer months of the year in Weymouth. Across 45 years of records, the warmest July in Weymouth was 2018 — when the month averaged 18.3°C — while the coldest was 1988 at 14.8°C. Typical July days reach 18.2°C with nights near 14.7°C. The long-term trend is warming, about 0.2°C per decade.
July is one of the drier months in Weymouth, averaging 51 mm of rainfall. The wettest July on record was 2012 with 113 mm, while the driest was 2022 at 7 mm.
Relative humidity in Weymouth during July averages 84%. The most humid July was 1991 at 87%, and the least humid was 2018 at 79%.
July receives about 5.5 kWh/m²/day of solar energy in Weymouth. The sunniest July was 2013 at 6.4 kWh/m²/day, and the cloudiest were 1986 and 1988 at 4.6.
Average wind speed in Weymouth during July is 4.4 m/s. The windiest July was 1988 at 6.1 m/s, while the calmest was 1983 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.3°C | 16.3°C | 16.2°C | 16.7°C | 17.2°C | +0.9°C |
| Avg High | 18.2°C | 18.1°C | 17.8°C | 18.4°C | 19.0°C | +0.8°C |
| Avg Low | 14.4°C | 14.5°C | 14.6°C | 15.0°C | 15.4°C | +1°C |
| Avg Rain | 42 mm | 39 mm | 67 mm | 51 mm | 58 mm | +15 mm |
July temperatures in Weymouth have risen by about 0.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 11°C (1996) to a record high of 25.5°C (2021).
Rainfall in July is one of the drier months, averaging 51 mm, with a wettest year of 113 mm.
One of the best times to visit Weymouth
July is one of the best times to visit Weymouth. Expect days averaging 18.2°C and nights around 14.7°C (mean 16.5°C) — warmer than Weymouth's yearly average — with moderate rainfall (51 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 | 20.0°C | 18.1°C | 16.2°C | 22.2°C | 14.2°C | 39 mm | 82% | 4.1 m/s | 5.9 |
| 2024 | 18.5°C | 16.9°C | 15.2°C | 25.4°C | 13.4°C | 81 mm | 84% | 4.3 m/s | 5.3 |
| 2023 | 18.1°C | 16.7°C | 15.2°C | 19.8°C | 13.7°C | 94 mm | 85% | 5.6 m/s | 5 |
| 2022 | 20.1°C | 18.0°C | 15.9°C | 23.8°C | 13.3°C | 7 mm | 80% | 3.9 m/s | 5.9 |
| 2021 | 19.0°C | 17.2°C | 15.5°C | 25.5°C | 13.6°C | 89 mm | 84% | 3.9 m/s | 5.7 |
| 2020 | 18.0°C | 16.2°C | 14.4°C | 20.6°C | 12.5°C | 36 mm | 82% | 5 m/s | 5.7 |
| 2019 | 19.0°C | 17.3°C | 15.6°C | 20.6°C | 13.0°C | 37 mm | 83% | 3.8 m/s | 6.2 |
| 2018 🔥 | 20.4°C | 18.3°C | 16.2°C | 25.2°C | 15.2°C | 34 mm | 79% | 3.3 m/s | 6 |
| 2017 | 18.4°C | 16.9°C | 15.3°C | 22.0°C | 14.0°C | 78 mm | 84% | 4.9 m/s | 5.5 |
| 2016 | 17.8°C | 16.2°C | 14.6°C | 21.4°C | 12.5°C | 18 mm | 85% | 4.5 m/s | 5.6 |
| 2015 | 17.6°C | 16.1°C | 14.5°C | 19.0°C | 12.7°C | 77 mm | 84% | 5.2 m/s | 5.4 |
| 2014 | 19.6°C | 17.6°C | 15.6°C | 23.7°C | 13.5°C | 32 mm | 82% | 4.1 m/s | 6.3 |
| 2013 | 19.5°C | 17.3°C | 15.1°C | 25.0°C | 12.6°C | 36 mm | 82% | 3.6 m/s | 6.4 |
| 2012 🌧️ | 16.9°C | 15.4°C | 13.9°C | 23.3°C | 12.5°C | 113 mm | 86% | 4.8 m/s | 5.1 |
| 2011 | 17.4°C | 15.8°C | 14.1°C | 20.0°C | 11.8°C | 44 mm | 81% | 4.2 m/s | 5.3 |
| 2010 | 17.9°C | 16.5°C | 15.1°C | 21.0°C | 13.8°C | 41 mm | 85% | 4.4 m/s | 5.5 |
| 2009 | 17.3°C | 16.1°C | 14.8°C | 18.9°C | 13.6°C | 98 mm | 86% | 5.9 m/s | 5.2 |
| 2008 | 17.5°C | 16.0°C | 14.6°C | 20.1°C | 12.7°C | 80 mm | 85% | 5.4 m/s | 5.4 |
| 2007 | 17.2°C | 15.7°C | 14.3°C | 18.3°C | 12.6°C | 100 mm | 85% | 5.7 m/s | 5.3 |
| 2006 | 19.6°C | 17.7°C | 15.9°C | 23.2°C | 13.6°C | 36 mm | 83% | 3.6 m/s | 6.1 |
| 2005 | 18.3°C | 16.5°C | 14.8°C | 23.9°C | 12.4°C | 67 mm | 84% | 4.2 m/s | 5.4 |
| 2004 | 17.2°C | 15.5°C | 13.8°C | 19.9°C | 11.8°C | 47 mm | 84% | 4.2 m/s | 5.2 |
| 2003 | 18.0°C | 16.5°C | 15.0°C | 20.3°C | 13.3°C | 60 mm | 86% | 4.3 m/s | 5 |
| 2002 | 17.2°C | 15.6°C | 13.9°C | 20.6°C | 12.1°C | 70 mm | 86% | 4.5 m/s | 5.3 |
| 2001 | 18.0°C | 16.4°C | 14.7°C | 23.6°C | 12.0°C | 59 mm | 84% | 4 m/s | 5.3 |
| 2000 | 17.3°C | 15.7°C | 14.2°C | 20.9°C | 12.6°C | 56 mm | 85% | 4 m/s | 5.5 |
| 1999 | 19.1°C | 17.0°C | 14.9°C | 22.7°C | 13.1°C | 16 mm | 83% | 4 m/s | 5.9 |
| 1998 | 17.3°C | 15.7°C | 14.0°C | 18.1°C | 12.3°C | 48 mm | 85% | 5.3 m/s | 4.8 |
| 1997 | 18.2°C | 16.4°C | 14.5°C | 20.8°C | 11.6°C | 22 mm | 82% | 3.5 m/s | 5.7 |
| 1996 | 17.8°C | 15.8°C | 13.8°C | 20.7°C | 11.0°C | 45 mm | 84% | 4.3 m/s | 5.8 |
| 1995 | 18.9°C | 17.2°C | 15.4°C | 23.9°C | 12.5°C | 22 mm | 83% | 3.8 m/s | 5.5 |
| 1994 | 18.5°C | 16.7°C | 14.8°C | 22.9°C | 13.3°C | 24 mm | 85% | 3.6 m/s | 5.8 |
| 1993 | 17.3°C | 15.6°C | 13.9°C | 19.6°C | 11.9°C | 59 mm | 84% | 5.1 m/s | 4.9 |
| 1992 | 18.1°C | 16.4°C | 14.7°C | 22.2°C | 12.5°C | 63 mm | 84% | 4.3 m/s | 4.8 |
| 1991 | 17.2°C | 15.6°C | 14.1°C | 20.3°C | 12.3°C | 63 mm | 87% | 4.5 m/s | 5 |
| 1990 | 18.2°C | 16.4°C | 14.5°C | 22.4°C | 11.5°C | 26 mm | 80% | 5.1 m/s | 5.9 |
| 1989 | 20.2°C | 17.9°C | 15.6°C | 25.1°C | 13.0°C | 43 mm | 81% | 3.8 m/s | 5.9 |
| 1988 ❄️ | 16.2°C | 14.8°C | 13.4°C | 17.3°C | 12.2°C | 79 mm | 86% | 6.1 m/s | 4.6 |
| 1987 | 18.0°C | 16.1°C | 14.1°C | 23.1°C | 12.0°C | 44 mm | 82% | 3.9 m/s | 4.7 |
| 1986 | 17.3°C | 15.5°C | 13.6°C | 20.5°C | 11.6°C | 36 mm | 84% | 3.9 m/s | 4.6 |
| 1985 | 17.5°C | 15.7°C | 13.9°C | 20.0°C | 12.0°C | 39 mm | 84% | 4.5 m/s | 5.1 |
| 1984 | 18.3°C | 16.3°C | 14.4°C | 21.7°C | 11.2°C | 26 mm | 81% | 3.7 m/s | 5.5 |
| 1983 | 20.4°C | 18.2°C | 16.0°C | 25.3°C | 12.6°C | 21 mm | 84% | 3.1 m/s | — |
| 1982 | 18.4°C | 16.6°C | 14.7°C | 20.8°C | 12.3°C | 57 mm | 83% | 4 m/s | — |
| 1981 | 17.5°C | 15.8°C | 14.0°C | 21.9°C | 11.9°C | 35 mm | 85% | 4.5 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 18.2°C with lows near 14.7°C (mean 16.5°C), based on 45 years of NASA POWER data.
July averages 51 mm of rainfall in Weymouth, one of the drier months. The wettest on record was 113 mm in 2012.
The hottest July reached 25.5°C in 2021. The coldest dipped to 11°C in 1996.
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 18.4°C to 19.1°C and overnight lows from 14.6°C to 15.6°C over the same span.
July is one of the warmer months of the year in Weymouth and one of the drier months, so plan for around 18.2°C daytime highs and 14.7°C at night.
Not quite — July is the 11th coolest month in Weymouth, averaging 16.5°C.
For July in Weymouth, pack light layers you can adjust through the day, with typical highs of 18.2°C and lows of 14.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 84% — quite humid.
Average wind speed in July is 4.4 m/s. The windiest July on record averaged 6.1 m/s (1988).
The wettest July on record was 2012 with 113 mm. On average, July sees 51 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 Weymouth 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.
