July is one of the warmer months of the year in Lisburn, with average highs near 17.9°C and lows around 11.2°C (mean 14.6°C). It is about average for rainfall, averaging 88 mm of rainfall and 85% relative humidity across the period.
July is one of the warmer months of the year in Lisburn. Across 45 years of records, the warmest July in Lisburn was 1983 — when the month averaged 16.6°C — while the coldest were 1988 and 1993 at 13°C. Typical July days reach 17.9°C with nights near 11.2°C. The long-term July temperature trend is broadly flat.
July is about average for rainfall in Lisburn, averaging 88 mm of rainfall. The wettest July on record was 2010 with 146 mm, while the driest was 1983 at 26 mm.
Relative humidity in Lisburn during July averages 85%. The most humid July was 2003 at 87%, and the least humid was 1989 at 83%.
July receives about 4.4 kWh/m²/day of solar energy in Lisburn. The sunniest July was 2013 at 5.3 kWh/m²/day, and the cloudiest was 2002 at 3.6.
Average wind speed in Lisburn during July is 3.3 m/s. The windiest July was 1988 at 4.1 m/s, while the calmest was 2021 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.5°C | 14.5°C | 14.4°C | 14.6°C | 14.9°C | +0.4°C |
| Avg High | 17.9°C | 17.8°C | 17.6°C | 18.0°C | 18.3°C | +0.4°C |
| Avg Low | 11.0°C | 11.2°C | 11.1°C | 11.2°C | 11.5°C | +0.5°C |
| Avg Rain | 73 mm | 85 mm | 89 mm | 99 mm | 94 mm | +21 mm |
July temperatures in Lisburn have risen by about 0.5°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 5.7°C (1993) to a record high of 26.2°C (1983).
Rainfall in July is about average for rainfall, averaging 88 mm, with a wettest year of 146 mm.
One of the best times to visit Lisburn
July is one of the best times to visit Lisburn. Expect days averaging 17.9°C and nights around 11.2°C (mean 14.6°C) — warmer than Lisburn's yearly average — with higher rainfall (88 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 | 19.4°C | 15.8°C | 12.3°C | 24.2°C | 8.6°C | 85 mm | 85% | 3.2 m/s | 4.5 |
| 2024 | 17.4°C | 14.0°C | 10.7°C | 20.9°C | 8.0°C | 94 mm | 85% | 3 m/s | 4.2 |
| 2023 | 17.2°C | 14.2°C | 11.2°C | 20.2°C | 8.7°C | 146 mm | 86% | 3.8 m/s | 4 |
| 2022 | 19.3°C | 15.5°C | 11.8°C | 25.3°C | 9.7°C | 49 mm | 84% | 3.1 m/s | 4.4 |
| 2021 | 20.1°C | 16.4°C | 12.7°C | 26.0°C | 10.4°C | 47 mm | 85% | 2.1 m/s | 4.8 |
| 2020 | 16.7°C | 13.6°C | 10.6°C | 20.8°C | 7.7°C | 143 mm | 85% | 3.5 m/s | 3.9 |
| 2019 | 18.6°C | 15.3°C | 12.1°C | 22.7°C | 7.5°C | 93 mm | 86% | 3.3 m/s | 4.4 |
| 2018 | 19.5°C | 15.7°C | 12.0°C | 23.0°C | 8.6°C | 71 mm | 84% | 2.7 m/s | 4.8 |
| 2017 | 17.7°C | 14.0°C | 10.4°C | 21.8°C | 6.6°C | 122 mm | 85% | 3.2 m/s | 4.7 |
| 2016 | 17.6°C | 14.2°C | 10.8°C | 23.5°C | 7.3°C | 121 mm | 87% | 3.2 m/s | 4.2 |
| 2015 | 16.4°C | 13.1°C | 9.9°C | 22.2°C | 6.6°C | 126 mm | 85% | 3.7 m/s | 4 |
| 2014 | 18.9°C | 15.4°C | 11.9°C | 23.1°C | 8.5°C | 64 mm | 84% | 2.9 m/s | 4.6 |
| 2013 | 20.4°C | 16.4°C | 12.5°C | 25.5°C | 9.2°C | 56 mm | 84% | 2.5 m/s | 5.3 |
| 2012 | 16.4°C | 13.3°C | 10.2°C | 20.0°C | 6.3°C | 118 mm | 87% | 3.2 m/s | 4 |
| 2011 | 17.2°C | 13.8°C | 10.3°C | 21.2°C | 7.2°C | 76 mm | 83% | 3.1 m/s | 4.5 |
| 2010 🌧️ | 17.8°C | 14.7°C | 11.6°C | 21.7°C | 8.5°C | 146 mm | 86% | 3.6 m/s | 4.4 |
| 2009 | 17.3°C | 14.2°C | 11.1°C | 21.4°C | 7.5°C | 127 mm | 86% | 3.8 m/s | 4.5 |
| 2008 | 17.6°C | 14.5°C | 11.4°C | 21.0°C | 7.6°C | 131 mm | 87% | 3.8 m/s | 4 |
| 2007 | 16.8°C | 13.7°C | 10.6°C | 19.0°C | 7.8°C | 112 mm | 86% | 3.1 m/s | 4.4 |
| 2006 | 20.1°C | 16.3°C | 12.5°C | 24.5°C | 8.4°C | 67 mm | 84% | 2.9 m/s | 5 |
| 2005 | 17.9°C | 14.7°C | 11.5°C | 24.8°C | 8.4°C | 63 mm | 86% | 2.9 m/s | 4.3 |
| 2004 | 16.7°C | 13.5°C | 10.2°C | 19.9°C | 7.7°C | 65 mm | 85% | 3.2 m/s | 4.3 |
| 2003 | 18.5°C | 15.3°C | 12.1°C | 23.4°C | 9.3°C | 91 mm | 87% | 3.4 m/s | 3.8 |
| 2002 | 16.4°C | 13.3°C | 10.2°C | 21.1°C | 7.8°C | 117 mm | 87% | 3.1 m/s | 3.6 |
| 2001 | 17.4°C | 14.2°C | 10.9°C | 22.3°C | 6.8°C | 68 mm | 86% | 3.3 m/s | 4 |
| 2000 | 17.4°C | 14.0°C | 10.7°C | 20.9°C | 7.3°C | 52 mm | 86% | 2.9 m/s | 4.8 |
| 1999 | 18.8°C | 15.2°C | 11.6°C | 24.2°C | 9.5°C | 82 mm | 85% | 3.2 m/s | 4.9 |
| 1998 | 16.6°C | 13.6°C | 10.6°C | 18.8°C | 8.2°C | 114 mm | 87% | 4 m/s | 4.2 |
| 1997 | 18.2°C | 14.8°C | 11.4°C | 21.8°C | 8.4°C | 105 mm | 86% | 3.2 m/s | 4 |
| 1996 | 17.3°C | 14.0°C | 10.8°C | 22.0°C | 7.4°C | 88 mm | 85% | 3.2 m/s | 4.4 |
| 1995 | 18.9°C | 15.6°C | 12.2°C | 23.6°C | 9.0°C | 100 mm | 86% | 3.5 m/s | 4.4 |
| 1994 | 18.0°C | 14.6°C | 11.2°C | 20.2°C | 8.2°C | 70 mm | 85% | 3 m/s | 4.6 |
| 1993 | 16.0°C | 13.0°C | 10.0°C | 20.2°C | 5.7°C | 83 mm | 86% | 3.9 m/s | 4.3 |
| 1992 | 17.5°C | 14.1°C | 10.7°C | 20.6°C | 8.4°C | 84 mm | 84% | 3.5 m/s | 4.3 |
| 1991 | 18.7°C | 15.4°C | 12.0°C | 22.7°C | 9.2°C | 57 mm | 85% | 3.6 m/s | 4.4 |
| 1990 | 18.3°C | 14.7°C | 11.1°C | 22.1°C | 6.0°C | 66 mm | 83% | 3.8 m/s | 4.8 |
| 1989 | 19.9°C | 15.9°C | 12.0°C | 24.0°C | 8.7°C | 38 mm | 83% | 3 m/s | 5.2 |
| 1988 ❄️ | 15.9°C | 13.0°C | 10.1°C | 20.4°C | 8.2°C | 133 mm | 85% | 4.1 m/s | 4.3 |
| 1987 | 17.6°C | 14.3°C | 10.9°C | 21.6°C | 7.0°C | 78 mm | 86% | 3.5 m/s | 3.9 |
| 1986 | 16.7°C | 13.5°C | 10.3°C | 23.0°C | 6.8°C | 86 mm | 86% | 3.4 m/s | 3.9 |
| 1985 | 17.1°C | 13.8°C | 10.4°C | 21.9°C | 6.5°C | 121 mm | 86% | 3.5 m/s | 4 |
| 1984 | 18.7°C | 14.8°C | 10.9°C | 21.1°C | 5.9°C | 59 mm | 83% | 3.1 m/s | 4.6 |
| 1983 🔥 | 20.5°C | 16.6°C | 12.6°C | 26.2°C | 8.7°C | 26 mm | 83% | 2.4 m/s | — |
| 1982 | 18.3°C | 14.6°C | 11.0°C | 21.9°C | 8.6°C | 33 mm | 84% | 2.7 m/s | — |
| 1981 | 16.7°C | 13.6°C | 10.4°C | 20.7°C | 8.0°C | 83 mm | 86% | 3.7 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 17.9°C with lows near 11.2°C (mean 14.6°C), based on 45 years of NASA POWER data.
July averages 88 mm of rainfall in Lisburn, about average for rainfall. The wettest on record was 146 mm in 2010.
The hottest July reached 26.2°C in 1983. The coldest dipped to 5.7°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.5°C. Daytime highs moved from 18.3°C to 18.7°C and overnight lows from 11.1°C to 11.7°C over the same span.
July is one of the warmer months of the year in Lisburn and about average for rainfall, so plan for around 17.9°C daytime highs and 11.2°C at night.
Not quite — July is the 12th coolest month in Lisburn, averaging 14.6°C.
For July in Lisburn, pack light layers you can adjust through the day, with typical highs of 17.9°C and lows of 11.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 85% — quite humid.
Average wind speed in July is 3.3 m/s. The windiest July on record averaged 4.1 m/s (1988).
The wettest July on record was 2010 with 146 mm. On average, July sees 88 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 Lisburn 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.
