August is one of the warmer months of the year in Larne, with average highs near 16°C and lows around 12.8°C (mean 14.4°C). It is about average for rainfall, averaging 92 mm of rainfall and 86% relative humidity across the period.
August is one of the warmer months of the year in Larne. Across 45 years of records, the warmest August in Larne was 1995 — when the month averaged 16.2°C — while the coldest was 1986 at 12.3°C. Typical August days reach 16°C with nights near 12.8°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Larne, averaging 92 mm of rainfall. The wettest August on record was 2009 with 182 mm, while the driest was 1995 at 20 mm.
Relative humidity in Larne during August averages 86%. The most humid Augusts were 1996 and 2008 at 89%, and the least humid was 1986 at 83%.
August receives about 4 kWh/m²/day of solar energy in Larne. The sunniest Augusts were 1995 and 2003 at 4.6 kWh/m²/day, and the cloudiest was 2008 at 3.2.
Average wind speed in Larne during August is 4.4 m/s. The windiest August was 1985 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 | 13.9°C | 14.4°C | 14.6°C | 14.2°C | 15.2°C | +1.3°C |
| Avg High | 15.5°C | 16.0°C | 16.1°C | 15.7°C | 16.8°C | +1.3°C |
| Avg Low | 12.3°C | 12.8°C | 13.1°C | 12.7°C | 13.5°C | +1.2°C |
| Avg Rain | 97 mm | 74 mm | 104 mm | 97 mm | 86 mm | -11 mm |
August temperatures in Larne have risen by about 0.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 9.3°C (1992) to a record high of 22.6°C (1995).
Rainfall in August is about average for rainfall, averaging 92 mm, with a wettest year of 182 mm.
One of the best times to visit Larne
August is one of the best times to visit Larne. Expect days averaging 16°C and nights around 12.8°C (mean 14.4°C) — warmer than Larne's yearly average — with higher rainfall (92 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 | 17.4°C | 15.7°C | 14.0°C | 20.7°C | 12.6°C | 54 mm | 86% | 4.6 m/s | 4.3 |
| 2024 | 16.3°C | 14.6°C | 12.8°C | 18.3°C | 10.9°C | 130 mm | 86% | 5.4 m/s | 3.8 |
| 2023 | 16.7°C | 15.2°C | 13.7°C | 19.1°C | 12.4°C | 76 mm | 86% | 4.8 m/s | 4.2 |
| 2022 | 17.5°C | 15.6°C | 13.8°C | 21.5°C | 11.9°C | 41 mm | 84% | 3.3 m/s | 4.5 |
| 2021 | 16.6°C | 15.0°C | 13.5°C | 19.5°C | 11.7°C | 74 mm | 87% | 3.4 m/s | 3.6 |
| 2020 | 16.5°C | 14.9°C | 13.3°C | 19.1°C | 10.9°C | 144 mm | 87% | 4 m/s | 3.8 |
| 2019 | 16.6°C | 15.0°C | 13.4°C | 19.0°C | 11.2°C | 116 mm | 87% | 5 m/s | 4.1 |
| 2018 | 15.8°C | 14.3°C | 12.7°C | 18.4°C | 10.8°C | 99 mm | 86% | 4.2 m/s | 3.7 |
| 2017 | 15.7°C | 14.2°C | 12.6°C | 17.3°C | 11.1°C | 111 mm | 86% | 4.7 m/s | 3.9 |
| 2016 | 16.3°C | 14.8°C | 13.2°C | 17.7°C | 11.9°C | 78 mm | 87% | 4.7 m/s | 4 |
| 2015 | 15.5°C | 13.8°C | 12.0°C | 18.5°C | 10.0°C | 102 mm | 86% | 4.3 m/s | 4.2 |
| 2014 | 15.0°C | 13.6°C | 12.3°C | 17.3°C | 10.6°C | 123 mm | 84% | 5.7 m/s | 4.1 |
| 2013 | 16.0°C | 14.4°C | 12.9°C | 18.0°C | 11.9°C | 65 mm | 86% | 4.2 m/s | 4 |
| 2012 | 16.0°C | 14.6°C | 13.2°C | 18.4°C | 11.4°C | 121 mm | 88% | 4.4 m/s | 4 |
| 2011 | 15.0°C | 13.6°C | 12.2°C | 17.5°C | 10.8°C | 81 mm | 85% | 4.1 m/s | 3.9 |
| 2010 | 15.2°C | 13.8°C | 12.4°C | 18.2°C | 10.8°C | 74 mm | 85% | 4.7 m/s | 4.5 |
| 2009 🌧️ | 16.2°C | 14.6°C | 13.0°C | 18.2°C | 11.5°C | 182 mm | 88% | 5.4 m/s | 3.7 |
| 2008 | 15.8°C | 14.5°C | 13.3°C | 18.3°C | 11.9°C | 167 mm | 89% | 4.3 m/s | 3.2 |
| 2007 | 15.5°C | 14.1°C | 12.7°C | 17.5°C | 10.9°C | 120 mm | 87% | 5 m/s | 3.9 |
| 2006 | 15.9°C | 14.5°C | 13.2°C | 19.8°C | 12.0°C | 84 mm | 87% | 4.9 m/s | 4.1 |
| 2005 | 15.8°C | 14.3°C | 12.7°C | 18.6°C | 10.7°C | 78 mm | 88% | 4.4 m/s | 4.1 |
| 2004 | 16.4°C | 15.0°C | 13.7°C | 19.1°C | 11.7°C | 138 mm | 88% | 4.3 m/s | 3.9 |
| 2003 | 17.0°C | 15.3°C | 13.6°C | 21.1°C | 11.4°C | 30 mm | 85% | 3.8 m/s | 4.6 |
| 2002 | 16.4°C | 14.8°C | 13.2°C | 20.7°C | 12.1°C | 66 mm | 88% | 3.5 m/s | 4.1 |
| 2001 | 15.8°C | 14.2°C | 12.6°C | 18.4°C | 11.3°C | 98 mm | 88% | 3.6 m/s | 3.9 |
| 2000 | 16.6°C | 14.9°C | 13.1°C | 18.6°C | 11.5°C | 77 mm | 87% | 3.3 m/s | 4.4 |
| 1999 | 15.8°C | 14.3°C | 12.8°C | 18.5°C | 10.9°C | 79 mm | 85% | 4.3 m/s | 3.9 |
| 1998 | 15.9°C | 14.3°C | 12.7°C | 18.6°C | 11.0°C | 87 mm | 87% | 5.1 m/s | 3.9 |
| 1997 | 17.3°C | 15.5°C | 13.7°C | 19.7°C | 11.1°C | 44 mm | 87% | 3.8 m/s | 4.2 |
| 1996 | 15.2°C | 13.8°C | 12.5°C | 17.3°C | 11.1°C | 75 mm | 89% | 4 m/s | 4 |
| 1995 🔥 | 18.1°C | 16.2°C | 14.3°C | 22.6°C | 12.0°C | 20 mm | 85% | 3.5 m/s | 4.6 |
| 1994 | 15.1°C | 13.5°C | 11.9°C | 17.7°C | 10.0°C | 87 mm | 85% | 4 m/s | 4.3 |
| 1993 | 14.6°C | 13.1°C | 11.5°C | 17.8°C | 9.3°C | 65 mm | 85% | 4.3 m/s | 4.3 |
| 1992 | 15.0°C | 13.4°C | 11.8°C | 17.2°C | 9.3°C | 140 mm | 85% | 5.5 m/s | 4 |
| 1991 | 16.3°C | 14.7°C | 13.1°C | 20.5°C | 11.3°C | 61 mm | 87% | 3.9 m/s | 3.9 |
| 1990 | 16.3°C | 14.8°C | 13.2°C | 19.3°C | 11.4°C | 82 mm | 87% | 4.3 m/s | 3.7 |
| 1989 | 15.8°C | 14.1°C | 12.4°C | 17.7°C | 11.2°C | 105 mm | 86% | 5.3 m/s | 3.5 |
| 1988 | 15.0°C | 13.5°C | 11.9°C | 17.5°C | 10.4°C | 122 mm | 86% | 5.5 m/s | 3.8 |
| 1987 | 15.1°C | 13.7°C | 12.2°C | 18.8°C | 10.3°C | 111 mm | 87% | 4.4 m/s | 3.4 |
| 1986 ❄️ | 13.7°C | 12.3°C | 10.9°C | 15.8°C | 9.5°C | 108 mm | 83% | 5.1 m/s | 3.6 |
| 1985 | 14.3°C | 12.9°C | 11.5°C | 16.7°C | 9.5°C | 177 mm | 87% | 6.1 m/s | 3.3 |
| 1984 | 17.0°C | 15.2°C | 13.5°C | 20.2°C | 10.7°C | 84 mm | 85% | 3.4 m/s | 4.1 |
| 1983 | 17.1°C | 15.2°C | 13.3°C | 19.6°C | 10.4°C | 33 mm | 84% | 3.1 m/s | — |
| 1982 | 15.3°C | 13.8°C | 12.2°C | 19.8°C | 10.1°C | 96 mm | 84% | 5.3 m/s | — |
| 1981 | 16.1°C | 14.4°C | 12.8°C | 18.5°C | 11.0°C | 39 mm | 86% | 3.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 16°C with lows near 12.8°C (mean 14.4°C), based on 45 years of NASA POWER data.
August averages 92 mm of rainfall in Larne, about average for rainfall. The wettest on record was 182 mm in 2009.
The hottest August reached 22.6°C in 1995. The coldest dipped to 9.3°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.9°C. Daytime highs moved from 16°C to 16.9°C and overnight lows from 12.7°C to 13.6°C over the same span.
August is one of the warmer months of the year in Larne and about average for rainfall, so plan for around 16°C daytime highs and 12.8°C at night.
Not quite — August is the 12th coolest month in Larne, averaging 14.4°C.
For August in Larne, pack light layers you can adjust through the day, with typical highs of 16°C and lows of 12.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 86% — quite humid.
Average wind speed in August is 4.4 m/s. The windiest August on record averaged 6.1 m/s (1985).
The wettest August on record was 2009 with 182 mm. On average, August sees 92 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 August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
