July is one of the warmer months of the year in Larne, with average highs near 15.7°C and lows around 12.5°C (mean 14.1°C). It is one of the drier months, averaging 82 mm of rainfall and 86% relative humidity across the period.
July is one of the warmer months of the year in Larne. Across 45 years of records, the warmest July in Larne was 2006 — when the month averaged 15.7°C — while the coldest was 1993 at 12.7°C. Typical July days reach 15.7°C with nights near 12.5°C. The long-term trend is warming, about 0.2°C per decade.
July is one of the drier months in Larne, averaging 82 mm of rainfall. The wettest July on record was 2010 with 143 mm, while the driest was 2021 at 23 mm.
Relative humidity in Larne during July averages 86%. The most humid July was 2003 at 88%, and the least humid was 1984 at 84%.
July receives about 4.8 kWh/m²/day of solar energy in Larne. The sunniest July was 2013 at 5.7 kWh/m²/day, and the cloudiest was 1986 at 3.6.
Average wind speed in Larne during July is 4 m/s. The windiest July was 1998 at 5.3 m/s, while the calmest was 2021 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.9°C | 14.0°C | 14.1°C | 14.2°C | 14.5°C | +0.6°C |
| Avg High | 15.6°C | 15.6°C | 15.6°C | 15.9°C | 16.1°C | +0.5°C |
| Avg Low | 12.2°C | 12.3°C | 12.6°C | 12.6°C | 12.9°C | +0.7°C |
| Avg Rain | 72 mm | 80 mm | 76 mm | 99 mm | 82 mm | +10 mm |
July temperatures in Larne have risen by about 0.6°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 8.9°C (1993) to a record high of 23.2°C (2021).
Rainfall in July is one of the drier months, averaging 82 mm, with a wettest year of 143 mm.
One of the best times to visit Larne
July is one of the best times to visit Larne. Expect days averaging 15.7°C and nights around 12.5°C (mean 14.1°C) — warmer than Larne's yearly average — with higher rainfall (82 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 | 17.1°C | 15.4°C | 13.7°C | 20.9°C | 11.2°C | 74 mm | 87% | 4 m/s | 4.9 |
| 2024 | 15.5°C | 13.8°C | 12.2°C | 18.0°C | 10.3°C | 74 mm | 86% | 3.8 m/s | 4.6 |
| 2023 | 15.6°C | 14.3°C | 12.9°C | 17.1°C | 11.2°C | 135 mm | 86% | 4.9 m/s | 4.4 |
| 2022 | 16.3°C | 14.6°C | 12.9°C | 19.8°C | 11.3°C | 47 mm | 86% | 4.1 m/s | 4.9 |
| 2021 | 17.4°C | 15.5°C | 13.6°C | 23.2°C | 12.1°C | 23 mm | 86% | 2.7 m/s | 5.4 |
| 2020 | 14.7°C | 13.3°C | 11.9°C | 17.2°C | 10.6°C | 142 mm | 86% | 4.4 m/s | 4.2 |
| 2019 | 16.1°C | 14.7°C | 13.3°C | 19.3°C | 11.1°C | 120 mm | 88% | 4 m/s | 4.7 |
| 2018 | 17.2°C | 15.1°C | 13.1°C | 20.0°C | 11.5°C | 78 mm | 85% | 3.2 m/s | 5.2 |
| 2017 | 15.6°C | 13.9°C | 12.1°C | 18.3°C | 10.5°C | 125 mm | 86% | 4.2 m/s | 4.9 |
| 2016 | 15.4°C | 13.9°C | 12.3°C | 20.1°C | 9.8°C | 115 mm | 87% | 4.1 m/s | 4.4 |
| 2015 | 14.5°C | 13.0°C | 11.6°C | 18.2°C | 10.2°C | 118 mm | 85% | 4.6 m/s | 4.6 |
| 2014 | 16.8°C | 15.1°C | 13.3°C | 21.5°C | 11.0°C | 65 mm | 85% | 3.5 m/s | 5.1 |
| 2013 | 17.5°C | 15.5°C | 13.5°C | 22.7°C | 10.4°C | 49 mm | 87% | 2.8 m/s | 5.7 |
| 2012 | 14.5°C | 13.2°C | 11.8°C | 17.9°C | 10.5°C | 107 mm | 87% | 4 m/s | 4.5 |
| 2011 | 15.4°C | 13.8°C | 12.2°C | 18.2°C | 10.8°C | 71 mm | 84% | 4 m/s | 5.4 |
| 2010 🌧️ | 15.7°C | 14.1°C | 12.5°C | 17.7°C | 10.9°C | 143 mm | 87% | 4.4 m/s | 4.3 |
| 2009 | 15.8°C | 14.3°C | 12.9°C | 20.1°C | 10.9°C | 99 mm | 86% | 4.7 m/s | 5 |
| 2008 | 15.5°C | 14.1°C | 12.6°C | 19.2°C | 10.6°C | 118 mm | 88% | 4.7 m/s | 4.4 |
| 2007 | 15.2°C | 13.8°C | 12.4°C | 16.9°C | 10.5°C | 81 mm | 86% | 3.9 m/s | 5 |
| 2006 🔥 | 17.6°C | 15.7°C | 13.7°C | 21.6°C | 11.0°C | 58 mm | 86% | 3.3 m/s | 5.4 |
| 2005 | 15.5°C | 14.1°C | 12.6°C | 20.6°C | 10.9°C | 54 mm | 87% | 3.7 m/s | 4.8 |
| 2004 | 14.9°C | 13.4°C | 11.9°C | 17.8°C | 10.2°C | 62 mm | 86% | 4 m/s | 4.8 |
| 2003 | 16.4°C | 14.8°C | 13.2°C | 20.7°C | 11.6°C | 71 mm | 88% | 4.2 m/s | 4.7 |
| 2002 | 14.7°C | 13.3°C | 11.9°C | 16.8°C | 10.2°C | 103 mm | 87% | 3.9 m/s | 4.3 |
| 2001 | 15.2°C | 13.7°C | 12.1°C | 18.3°C | 10.0°C | 83 mm | 88% | 4 m/s | 5 |
| 2000 | 15.5°C | 13.9°C | 12.2°C | 18.9°C | 9.5°C | 27 mm | 86% | 3.6 m/s | 5.3 |
| 1999 | 16.6°C | 14.8°C | 12.9°C | 21.4°C | 11.5°C | 77 mm | 86% | 3.8 m/s | 5.3 |
| 1998 | 14.9°C | 13.5°C | 12.1°C | 16.5°C | 11.1°C | 117 mm | 87% | 5.3 m/s | 4.7 |
| 1997 | 16.0°C | 14.2°C | 12.4°C | 19.1°C | 9.5°C | 88 mm | 88% | 3.8 m/s | 4.9 |
| 1996 | 15.0°C | 13.5°C | 12.0°C | 19.5°C | 10.0°C | 93 mm | 86% | 4.1 m/s | 4.8 |
| 1995 | 16.4°C | 14.7°C | 13.0°C | 20.5°C | 10.3°C | 82 mm | 87% | 4 m/s | 4.9 |
| 1994 | 15.3°C | 13.6°C | 12.0°C | 17.5°C | 10.7°C | 62 mm | 87% | 3.4 m/s | 4.8 |
| 1993 ❄️ | 14.2°C | 12.7°C | 11.2°C | 16.9°C | 8.9°C | 83 mm | 87% | 5 m/s | 4.3 |
| 1992 | 15.5°C | 13.8°C | 12.1°C | 17.9°C | 10.5°C | 83 mm | 85% | 4.5 m/s | 4.4 |
| 1991 | 16.3°C | 14.5°C | 12.8°C | 19.6°C | 11.0°C | 52 mm | 87% | 4.1 m/s | 4.7 |
| 1990 | 15.9°C | 14.2°C | 12.5°C | 18.6°C | 9.6°C | 65 mm | 85% | 4.7 m/s | 5.1 |
| 1989 | 17.0°C | 15.0°C | 13.0°C | 21.1°C | 11.0°C | 39 mm | 84% | 3.7 m/s | 5.3 |
| 1988 | 14.4°C | 13.0°C | 11.5°C | 16.8°C | 10.5°C | 122 mm | 85% | 5.2 m/s | 4.2 |
| 1987 | 15.2°C | 13.6°C | 12.1°C | 18.0°C | 9.6°C | 86 mm | 88% | 4.3 m/s | 4 |
| 1986 | 14.5°C | 13.1°C | 11.6°C | 18.8°C | 9.8°C | 76 mm | 87% | 4.3 m/s | 3.6 |
| 1985 | 14.9°C | 13.2°C | 11.5°C | 17.9°C | 9.5°C | 120 mm | 88% | 4.2 m/s | 4 |
| 1984 | 16.2°C | 14.4°C | 12.6°C | 19.2°C | 9.8°C | 58 mm | 84% | 3.9 m/s | 5.1 |
| 1983 | 17.2°C | 15.2°C | 13.2°C | 22.4°C | 9.7°C | 25 mm | 84% | 2.8 m/s | — |
| 1982 | 16.1°C | 14.2°C | 12.4°C | 19.7°C | 10.2°C | 30 mm | 84% | 3.3 m/s | — |
| 1981 | 14.9°C | 13.4°C | 12.0°C | 17.4°C | 9.9°C | 91 mm | 86% | 4.8 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 15.7°C with lows near 12.5°C (mean 14.1°C), based on 45 years of NASA POWER data.
July averages 82 mm of rainfall in Larne, one of the drier months. The wettest on record was 143 mm in 2010.
The hottest July reached 23.2°C in 2021. The coldest dipped to 8.9°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.6°C. Daytime highs moved from 15.9°C to 16.4°C and overnight lows from 12.3°C to 13.1°C over the same span.
July is one of the warmer months of the year in Larne and one of the drier months, so plan for around 15.7°C daytime highs and 12.5°C at night.
Not quite — July is the 11th coolest month in Larne, averaging 14.1°C.
For July in Larne, pack light layers you can adjust through the day, with typical highs of 15.7°C and lows of 12.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 86% — quite humid.
Average wind speed in July is 4 m/s. The windiest July on record averaged 5.3 m/s (1998).
The wettest July on record was 2010 with 143 mm. On average, July sees 82 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 Larne 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.
