July is one of the warmer months of the year in Grimsby, with average highs near 18.9°C and lows around 12.8°C (mean 15.9°C). It is a relatively wet time of year, averaging 59 mm of rainfall and 83% relative humidity across the period.
July is one of the warmer months of the year in Grimsby. Across 45 years of records, the warmest July in Grimsby was 2018 — when the month averaged 17.9°C — while the coldest was 2000 at 13.9°C. Typical July days reach 18.9°C with nights near 12.8°C. The long-term trend is warming, about 0.3°C per decade.
July is a relatively wet time of year in Grimsby, averaging 59 mm of rainfall. The wettest July on record was 2007 with 92 mm, while the driest was 2022 at 24 mm.
Relative humidity in Grimsby during July averages 83%. The most humid July was 2000 at 85%, and the least humid was 2022 at 79%.
July receives about 4.8 kWh/m²/day of solar energy in Grimsby. The sunniest July was 2006 at 6 kWh/m²/day, and the cloudiest were 2000, 2012 and 2020 at 4.3.
Average wind speed in Grimsby during July is 3.4 m/s. The windiest July was 2023 at 4.2 m/s, while the calmest was 1994 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.2°C | 15.8°C | 15.6°C | 16.2°C | 16.5°C | +1.3°C |
| Avg High | 18.2°C | 18.9°C | 18.5°C | 19.3°C | 19.5°C | +1.3°C |
| Avg Low | 12.2°C | 12.6°C | 12.7°C | 13.1°C | 13.5°C | +1.3°C |
| Avg Rain | — | 46 mm | 69 mm | 59 mm | 64 mm | — |
July temperatures in Grimsby have risen by about 1.4°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 8.1°C (2015) to a record high of 28.2°C (2022).
Rainfall in July is a relatively wet time of year, averaging 59 mm, with a wettest year of 92 mm.
One of the best times to visit Grimsby
July is one of the best times to visit Grimsby. Expect days averaging 18.9°C and nights around 12.8°C (mean 15.9°C) — warmer than Grimsby's yearly average — with moderate rainfall (59 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 | 20.5°C | 17.4°C | 14.3°C | 24.5°C | 11.3°C | 68 mm | 82% | 3.1 m/s | 4.7 |
| 2024 | 19.0°C | 16.0°C | 13.0°C | 24.6°C | 9.6°C | 76 mm | 83% | 3.5 m/s | 4.6 |
| 2023 | 19.0°C | 16.1°C | 13.2°C | 21.7°C | 10.9°C | 83 mm | 81% | 4.2 m/s | 4.4 |
| 2022 | 20.6°C | 17.3°C | 14.1°C | 28.2°C | 11.2°C | 24 mm | 79% | 3.2 m/s | 4.8 |
| 2021 | 19.9°C | 16.9°C | 14.0°C | 25.4°C | 11.9°C | 57 mm | 85% | 2.8 m/s | 4.8 |
| 2020 | 18.2°C | 15.2°C | 12.3°C | 23.2°C | 9.3°C | 73 mm | 82% | 3.9 m/s | 4.3 |
| 2019 | 20.2°C | 17.1°C | 14.0°C | 24.4°C | 10.6°C | 64 mm | 82% | 3.2 m/s | 4.8 |
| 2018 🔥 | 21.3°C | 17.9°C | 14.5°C | 25.3°C | 12.1°C | 31 mm | 81% | 2.8 m/s | 5.6 |
| 2017 | 19.0°C | 15.9°C | 12.9°C | 22.4°C | 11.4°C | 74 mm | 83% | 3.6 m/s | 4.8 |
| 2016 | 19.2°C | 16.0°C | 12.9°C | 24.1°C | 9.5°C | 37 mm | 82% | 3.4 m/s | 4.8 |
| 2015 | 18.3°C | 15.2°C | 12.1°C | 22.6°C | 8.1°C | 90 mm | 81% | 3.4 m/s | 4.8 |
| 2014 | 19.7°C | 16.8°C | 13.9°C | 22.1°C | 10.1°C | 63 mm | 84% | 3.2 m/s | 5.3 |
| 2013 | 20.1°C | 16.8°C | 13.5°C | 23.1°C | 10.5°C | 59 mm | 83% | 2.7 m/s | 5.4 |
| 2012 | 17.8°C | 14.9°C | 12.0°C | 24.1°C | 9.3°C | 89 mm | 83% | 3.4 m/s | 4.3 |
| 2011 | 17.8°C | 14.8°C | 11.8°C | 20.8°C | 9.3°C | 50 mm | 80% | 3.6 m/s | 4.8 |
| 2010 | 19.4°C | 16.5°C | 13.6°C | 22.9°C | 10.4°C | 37 mm | 82% | 3.5 m/s | 4.4 |
| 2009 | 18.6°C | 15.7°C | 12.7°C | 21.3°C | 9.6°C | 81 mm | 83% | 3.8 m/s | 4.8 |
| 2008 | 18.8°C | 15.7°C | 12.6°C | 24.1°C | 9.9°C | 59 mm | 84% | 3.7 m/s | 4.7 |
| 2007 🌧️ | 17.6°C | 15.0°C | 12.5°C | 19.6°C | 10.3°C | 92 mm | 84% | 4 m/s | 4.4 |
| 2006 | 21.0°C | 17.7°C | 14.4°C | 24.7°C | 11.0°C | 37 mm | 82% | 2.7 m/s | 6 |
| 2005 | 18.3°C | 15.5°C | 12.7°C | 23.1°C | 10.5°C | 86 mm | 84% | 3.4 m/s | 4.4 |
| 2004 | 18.1°C | 15.1°C | 12.2°C | 22.7°C | 9.2°C | 76 mm | 83% | 3.2 m/s | 4.4 |
| 2003 | 19.3°C | 16.5°C | 13.6°C | 22.2°C | 11.6°C | 57 mm | 85% | 3.3 m/s | 4.6 |
| 2002 | 18.4°C | 15.4°C | 12.4°C | 23.2°C | 9.8°C | 79 mm | 84% | 2.8 m/s | 4.4 |
| 2001 | 18.9°C | 16.0°C | 13.0°C | 24.1°C | 8.7°C | 65 mm | 83% | 3.5 m/s | 4.7 |
| 2000 ❄️ | 16.4°C | 13.9°C | 11.3°C | 20.1°C | 9.3°C | 57 mm | 85% | 3 m/s | 4.3 |
| 1999 | 19.2°C | 15.9°C | 12.7°C | 22.4°C | 10.3°C | 35 mm | 83% | 3.3 m/s | 5.5 |
| 1998 | 17.6°C | 14.8°C | 11.9°C | 21.5°C | 9.8°C | 33 mm | 83% | 4.1 m/s | 4.5 |
| 1997 | 18.7°C | 15.6°C | 12.5°C | 22.4°C | 9.6°C | 51 mm | 84% | 3 m/s | 4.9 |
| 1996 | 18.8°C | 15.3°C | 11.9°C | 24.7°C | 8.3°C | 43 mm | 81% | 3.1 m/s | 5.1 |
| 1995 | 19.9°C | 16.8°C | 13.7°C | 25.0°C | 9.4°C | 33 mm | 83% | 3.2 m/s | 5.3 |
| 1994 | 19.9°C | 16.6°C | 13.3°C | 24.6°C | 10.3°C | 37 mm | 84% | 2.6 m/s | 5.5 |
| 1993 | 17.7°C | 14.6°C | 11.6°C | 21.2°C | 8.3°C | 56 mm | 81% | 4.1 m/s | 4.7 |
| 1992 | 19.1°C | 16.0°C | 13.0°C | 22.5°C | 11.0°C | 90 mm | 79% | 3.7 m/s | 4.5 |
| 1991 | 19.8°C | 16.6°C | 13.4°C | 23.4°C | 11.1°C | 34 mm | 81% | 3.4 m/s | 4.9 |
| 1990 | 18.6°C | 15.3°C | 12.0°C | — | — | — | — | — | — |
| 1989 | 19.3°C | 16.3°C | 13.2°C | — | — | — | — | — | — |
| 1988 | 17.4°C | 14.6°C | 11.8°C | — | — | — | — | — | — |
| 1987 | 17.8°C | 15.0°C | 12.2°C | — | — | — | — | — | — |
| 1986 | 17.8°C | 14.7°C | 11.6°C | — | — | — | — | — | — |
| 1985 | 18.2°C | 15.1°C | 12.1°C | — | — | — | — | — | — |
| 1984 | 18.0°C | 14.8°C | 11.7°C | — | — | — | — | — | — |
| 1983 | 20.0°C | 16.5°C | 13.0°C | — | — | — | — | — | — |
| 1982 | 17.9°C | 15.0°C | 12.1°C | — | — | — | — | — | — |
| 1981 | 17.8°C | 14.9°C | 11.9°C | — | — | — | — | — | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 18.9°C with lows near 12.8°C (mean 15.9°C), based on 45 years of NASA POWER data.
July averages 59 mm of rainfall in Grimsby, a relatively wet time of year. The wettest on record was 92 mm in 2007.
The hottest July reached 28.2°C in 2022. The coldest dipped to 8.1°C in 2015.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.4°C. Daytime highs moved from 18.4°C to 19.8°C and overnight lows from 12.2°C to 13.7°C over the same span.
July is one of the warmer months of the year in Grimsby and a relatively wet time of year, so plan for around 18.9°C daytime highs and 12.8°C at night.
Not quite — July is the 11th coolest month in Grimsby, averaging 15.9°C.
For July in Grimsby, pack light layers you can adjust through the day, with typical highs of 18.9°C and lows of 12.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 83% — quite humid.
Average wind speed in July is 3.4 m/s. The windiest July on record averaged 4.2 m/s (2023).
The wettest July on record was 2007 with 92 mm. On average, July sees 59 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 Grimsby 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.
