October is one of the warmer months of the year in Larne, with average highs near 12.6°C and lows around 10°C (mean 11.3°C). It is a relatively wet time of year, averaging 123 mm of rainfall and 86% relative humidity across the period.
October is one of the warmer months of the year in Larne. Across 45 years of records, the warmest October in Larne was 2006 — when the month averaged 12.9°C — while the coldest was 1981 at 8.8°C. Typical October days reach 12.6°C with nights near 10°C. The long-term trend is warming, about 0.4°C per decade.
October is a relatively wet time of year in Larne, averaging 123 mm of rainfall. The wettest October on record was 2002 with 209 mm, while the driest was 2016 at 45 mm.
Relative humidity in Larne during October averages 86%. The most humid October was 2001 at 89%, and the least humid was 1993 at 82%.
October receives about 1.5 kWh/m²/day of solar energy in Larne. The sunniest Octobers were 2010 and 2015 at 1.8 kWh/m²/day, and the cloudiest was 2025 at 1.2.
Average wind speed in Larne during October is 6.3 m/s. The windiest October was 1983 at 7.9 m/s, while the calmest was 1993 at 4.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.6°C | 11.0°C | 11.6°C | 11.5°C | 12.1°C | +1.5°C |
| Avg High | 11.9°C | 12.2°C | 12.8°C | 12.8°C | 13.3°C | +1.4°C |
| Avg Low | 9.3°C | 9.7°C | 10.4°C | 10.2°C | 10.8°C | +1.5°C |
| Avg Rain | 125 mm | 115 mm | 135 mm | 115 mm | 127 mm | +1 mm |
October temperatures in Larne have risen by about 1.7°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 5.1°C (2000) to a record high of 17.3°C (1995).
Rainfall in October is a relatively wet time of year, averaging 123 mm, with a wettest year of 209 mm.
A good time to visit Larne
October is a good time to visit Larne, with days averaging 12.6°C and nights around 10°C (mean 11.3°C, warmer than Larne's yearly average) and higher rainfall. August and July are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 13.1°C | 12.0°C | 10.8°C | 17.2°C | 8.0°C | 110 mm | 86% | 6.1 m/s | 1.2 |
| 2024 | 13.4°C | 12.1°C | 10.8°C | 15.2°C | 7.6°C | 70 mm | 87% | 6.3 m/s | 1.6 |
| 2023 | 13.5°C | 12.3°C | 11.1°C | 17.2°C | 8.4°C | 117 mm | 86% | 6.3 m/s | 1.5 |
| 2022 | 14.0°C | 12.7°C | 11.4°C | 15.6°C | 8.8°C | 153 mm | 87% | 6.8 m/s | 1.5 |
| 2021 | 13.7°C | 12.4°C | 11.0°C | 16.6°C | 8.0°C | 137 mm | 87% | 6 m/s | 1.6 |
| 2020 | 12.2°C | 11.0°C | 9.8°C | 14.4°C | 8.2°C | 172 mm | 85% | 6.5 m/s | 1.6 |
| 2019 | 12.2°C | 10.9°C | 9.6°C | 15.2°C | 6.9°C | 102 mm | 84% | 6.2 m/s | 1.6 |
| 2018 | 12.4°C | 11.1°C | 9.8°C | 16.1°C | 5.5°C | 87 mm | 83% | 6.3 m/s | 1.6 |
| 2017 | 13.5°C | 12.3°C | 11.0°C | 15.9°C | 8.9°C | 112 mm | 87% | 6.9 m/s | 1.3 |
| 2016 | 12.8°C | 11.7°C | 10.6°C | 14.9°C | 8.3°C | 45 mm | 84% | 5.4 m/s | 1.7 |
| 2015 | 12.9°C | 11.7°C | 10.4°C | 15.4°C | 7.7°C | 68 mm | 86% | 5 m/s | 1.8 |
| 2014 | 13.3°C | 12.0°C | 10.7°C | 16.2°C | 9.1°C | 145 mm | 86% | 6.6 m/s | 1.6 |
| 2013 | 13.4°C | 12.0°C | 10.7°C | 16.4°C | 8.1°C | 162 mm | 88% | 6.4 m/s | 1.5 |
| 2012 | 11.1°C | 9.9°C | 8.7°C | 13.4°C | 5.1°C | 132 mm | 85% | 5.1 m/s | 1.7 |
| 2011 | 13.2°C | 11.9°C | 10.6°C | 16.1°C | 7.4°C | 201 mm | 88% | 6.8 m/s | 1.3 |
| 2010 | 12.8°C | 11.3°C | 9.9°C | 16.5°C | 6.7°C | 91 mm | 85% | 6.1 m/s | 1.8 |
| 2009 | 13.3°C | 12.2°C | 11.2°C | 15.3°C | 9.5°C | 100 mm | 86% | 5.9 m/s | 1.5 |
| 2008 | 11.8°C | 10.4°C | 9.1°C | 15.5°C | 5.1°C | 164 mm | 85% | 7.4 m/s | 1.5 |
| 2007 | 13.9°C | 12.6°C | 11.4°C | 16.1°C | 9.3°C | 63 mm | 87% | 5.1 m/s | 1.7 |
| 2006 🔥 | 14.2°C | 12.9°C | 11.7°C | 16.4°C | 8.5°C | 133 mm | 88% | 5.9 m/s | 1.6 |
| 2005 | 13.6°C | 12.3°C | 11.1°C | 15.5°C | 7.9°C | 152 mm | 88% | 6.5 m/s | 1.3 |
| 2004 | 11.9°C | 10.7°C | 9.6°C | 14.7°C | 6.4°C | 152 mm | 85% | 6.1 m/s | 1.5 |
| 2003 | 11.7°C | 10.6°C | 9.4°C | 15.3°C | 5.1°C | 51 mm | 83% | 6.3 m/s | 1.7 |
| 2002 🌧️ | 11.7°C | 10.6°C | 9.4°C | 15.7°C | 5.6°C | 209 mm | 86% | 6.1 m/s | 1.5 |
| 2001 | 13.9°C | 12.8°C | 11.6°C | 16.3°C | 9.6°C | 147 mm | 89% | 7 m/s | 1.5 |
| 2000 | 12.1°C | 10.7°C | 9.2°C | 16.0°C | 5.1°C | 177 mm | 86% | 7.3 m/s | 1.3 |
| 1999 | 12.7°C | 11.4°C | 10.2°C | 15.8°C | 7.6°C | 59 mm | 85% | 6.9 m/s | 1.5 |
| 1998 | 12.3°C | 11.0°C | 9.7°C | 15.8°C | 6.4°C | 158 mm | 83% | 7.4 m/s | 1.5 |
| 1997 | 12.9°C | 11.5°C | 10.2°C | 16.2°C | 7.7°C | 72 mm | 85% | 5.3 m/s | 1.5 |
| 1996 | 12.9°C | 11.6°C | 10.3°C | 15.1°C | 7.0°C | 143 mm | 88% | 7.3 m/s | 1.4 |
| 1995 | 14.1°C | 12.7°C | 11.3°C | 17.3°C | 8.7°C | 172 mm | 88% | 7 m/s | 1.5 |
| 1994 | 12.3°C | 11.0°C | 9.8°C | 14.6°C | 6.2°C | 94 mm | 88% | 5.9 m/s | 1.5 |
| 1993 | 10.2°C | 9.1°C | 8.0°C | 13.1°C | 5.4°C | 61 mm | 82% | 4.5 m/s | 1.5 |
| 1992 | 10.0°C | 8.9°C | 7.8°C | 13.6°C | 5.3°C | 88 mm | 83% | 5.5 m/s | 1.5 |
| 1991 | 12.1°C | 10.8°C | 9.5°C | 15.8°C | 6.8°C | 109 mm | 85% | 6.6 m/s | 1.4 |
| 1990 | 12.8°C | 11.6°C | 10.3°C | 15.7°C | 6.1°C | 190 mm | 87% | 7 m/s | 1.3 |
| 1989 | 13.0°C | 11.7°C | 10.4°C | 15.3°C | 7.7°C | 135 mm | 87% | 6.7 m/s | 1.3 |
| 1988 | 12.1°C | 11.0°C | 9.9°C | 14.7°C | 5.3°C | 125 mm | 87% | 6.2 m/s | 1.5 |
| 1987 | 11.1°C | 9.7°C | 8.3°C | 14.0°C | 5.9°C | 129 mm | 86% | 5.6 m/s | 1.5 |
| 1986 | 12.0°C | 10.5°C | 9.0°C | 14.8°C | 6.4°C | 101 mm | 88% | 6.6 m/s | 1.5 |
| 1985 | 12.5°C | 11.5°C | 10.4°C | 16.1°C | 6.5°C | 51 mm | 86% | 4.9 m/s | 1.5 |
| 1984 | 12.3°C | 10.9°C | 9.6°C | 15.3°C | 7.2°C | 134 mm | 86% | 6.3 m/s | 1.4 |
| 1983 | 12.2°C | 10.8°C | 9.4°C | 16.2°C | 6.0°C | 134 mm | 83% | 7.9 m/s | — |
| 1982 | 12.1°C | 10.8°C | 9.4°C | 14.8°C | 6.5°C | 141 mm | 85% | 6.6 m/s | — |
| 1981 ❄️ | 10.1°C | 8.8°C | 7.5°C | 13.9°C | 5.5°C | 178 mm | 83% | 6.8 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 12.6°C with lows near 10°C (mean 11.3°C), based on 45 years of NASA POWER data.
October averages 123 mm of rainfall in Larne, a relatively wet time of year. The wettest on record was 209 mm in 2002.
The hottest October reached 17.3°C in 1995. The coldest dipped to 5.1°C in 2000.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.7°C. Daytime highs moved from 11.8°C to 13.5°C and overnight lows from 9.3°C to 11°C over the same span.
October is one of the warmer months of the year in Larne and a relatively wet time of year, so plan for around 12.6°C daytime highs and 10°C at night.
Not quite — October is the 8th coolest month in Larne, averaging 11.3°C.
For October in Larne, pack light layers you can adjust through the day, with typical highs of 12.6°C and lows of 10°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 86% — quite humid.
Average wind speed in October is 6.3 m/s. The windiest October on record averaged 7.9 m/s (1983).
The wettest October on record was 2002 with 209 mm. On average, October sees 123 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 October, 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 October specifically, along with year-by-year records and how the month has changed over the decades.
