October is one of the warmer months of the year in Coleraine, with average highs near 12°C and lows around 7.7°C (mean 9.9°C). It is a relatively wet time of year, averaging 122 mm of rainfall and 89% relative humidity across the period.
October is one of the warmer months of the year in Coleraine. Across 45 years of records, the warmest Octobers in Coleraine were 2001 and 2007 — when the month averaged 11.5°C — while the coldest was 1981 at 7°C. Typical October days reach 12°C with nights near 7.7°C. The long-term trend is warming, about 0.4°C per decade.
October is a relatively wet time of year in Coleraine, averaging 122 mm of rainfall. The wettest October on record was 2002 with 200 mm, while the driest was 2016 at 43 mm.
Relative humidity in Coleraine during October averages 89%. The most humid October was 2006 at 91%, and the least humid was 1998 at 87%.
October receives about 1.4 kWh/m²/day of solar energy in Coleraine. The sunniest Octobers were 1987, 2010 and 2015 at 1.6 kWh/m²/day, and the cloudiest were 2000 and 2025 at 1.1.
Average wind speed in Coleraine during October is 4.9 m/s. The windiest October was 1983 at 6.3 m/s, while the calmest was 1993 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.2°C | 9.6°C | 10.2°C | 9.9°C | 10.6°C | +1.4°C |
| Avg High | 11.4°C | 11.6°C | 12.2°C | 12.2°C | 12.8°C | +1.4°C |
| Avg Low | 7.1°C | 7.5°C | 8.1°C | 7.7°C | 8.5°C | +1.4°C |
| Avg Rain | 128 mm | 116 mm | 129 mm | 109 mm | 131 mm | +3 mm |
October temperatures in Coleraine have risen by about 1.8°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 0.5°C (1993) to a record high of 19.1°C (2023).
Rainfall in October is a relatively wet time of year, averaging 122 mm, with a wettest year of 200 mm.
A good time to visit Coleraine
October is a good time to visit Coleraine, with days averaging 12°C and nights around 7.7°C (mean 9.9°C, close to Coleraine's yearly average) and higher rainfall. July and August 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 | 12.6°C | 10.8°C | 8.9°C | 17.9°C | 6.1°C | 120 mm | 89% | 4.9 m/s | 1.1 |
| 2024 | 13.1°C | 10.7°C | 8.2°C | 16.2°C | 4.7°C | 75 mm | 91% | 4.8 m/s | 1.4 |
| 2023 | 13.1°C | 11.0°C | 8.9°C | 19.1°C | 4.6°C | 128 mm | 90% | 4.8 m/s | 1.4 |
| 2022 | 13.3°C | 11.1°C | 9.0°C | 15.6°C | 5.5°C | 163 mm | 91% | 5.2 m/s | 1.4 |
| 2021 | 13.2°C | 11.0°C | 8.8°C | 17.9°C | 5.4°C | 128 mm | 90% | 4.6 m/s | 1.4 |
| 2020 | 11.3°C | 9.3°C | 7.4°C | 14.1°C | 4.7°C | 172 mm | 89% | 5 m/s | 1.4 |
| 2019 | 11.2°C | 9.1°C | 7.0°C | 14.9°C | 2.5°C | 93 mm | 89% | 4.8 m/s | 1.5 |
| 2018 | 11.8°C | 9.4°C | 7.0°C | 17.2°C | 2.5°C | 86 mm | 88% | 5 m/s | 1.4 |
| 2017 | 12.9°C | 10.8°C | 8.8°C | 15.5°C | 4.7°C | 127 mm | 91% | 5.4 m/s | 1.2 |
| 2016 | 12.4°C | 10.2°C | 8.0°C | 15.1°C | 5.3°C | 43 mm | 89% | 4 m/s | 1.5 |
| 2015 | 12.7°C | 10.2°C | 7.8°C | 16.6°C | 5.6°C | 64 mm | 89% | 3.8 m/s | 1.6 |
| 2014 | 12.7°C | 10.4°C | 8.1°C | 16.1°C | 5.2°C | 140 mm | 89% | 5.2 m/s | 1.4 |
| 2013 | 12.9°C | 10.8°C | 8.7°C | 18.1°C | 4.3°C | 133 mm | 91% | 4.8 m/s | 1.4 |
| 2012 | 10.4°C | 8.2°C | 6.1°C | 13.0°C | 1.8°C | 129 mm | 89% | 3.7 m/s | 1.5 |
| 2011 | 12.6°C | 10.6°C | 8.6°C | 16.1°C | 5.4°C | 200 mm | 91% | 5.4 m/s | 1.2 |
| 2010 | 12.2°C | 9.7°C | 7.2°C | 17.2°C | 0.8°C | 78 mm | 89% | 4.7 m/s | 1.6 |
| 2009 | 12.9°C | 10.8°C | 8.7°C | 15.1°C | 5.5°C | 104 mm | 90% | 4.5 m/s | 1.4 |
| 2008 | 11.1°C | 8.9°C | 6.7°C | 16.1°C | 2.0°C | 153 mm | 88% | 5.6 m/s | 1.4 |
| 2007 | 13.7°C | 11.5°C | 9.2°C | 17.4°C | 5.1°C | 67 mm | 91% | 4.2 m/s | 1.5 |
| 2006 | 13.7°C | 11.4°C | 9.2°C | 16.6°C | 6.2°C | 145 mm | 91% | 4.6 m/s | 1.5 |
| 2005 | 13.3°C | 11.1°C | 9.0°C | 16.9°C | 5.4°C | 135 mm | 90% | 5.1 m/s | 1.3 |
| 2004 | 10.9°C | 9.1°C | 7.2°C | 14.2°C | 2.5°C | 149 mm | 90% | 4.6 m/s | 1.4 |
| 2003 | 11.0°C | 9.1°C | 7.1°C | 15.0°C | 3.4°C | 52 mm | 88% | 4.7 m/s | 1.5 |
| 2002 🌧️ | 11.0°C | 9.1°C | 7.2°C | 17.9°C | 2.8°C | 200 mm | 90% | 4.4 m/s | 1.3 |
| 2001 🔥 | 13.6°C | 11.5°C | 9.5°C | 16.8°C | 6.6°C | 115 mm | 91% | 5.6 m/s | 1.3 |
| 2000 | 11.2°C | 9.1°C | 7.0°C | 17.8°C | 4.2°C | 172 mm | 90% | 5.8 m/s | 1.1 |
| 1999 | 12.1°C | 10.2°C | 8.3°C | 16.5°C | 4.7°C | 63 mm | 89% | 5.4 m/s | 1.3 |
| 1998 | 11.8°C | 9.7°C | 7.6°C | 15.8°C | 3.8°C | 154 mm | 87% | 5.7 m/s | 1.5 |
| 1997 | 12.3°C | 10.1°C | 7.9°C | 17.0°C | 2.9°C | 75 mm | 89% | 4 m/s | 1.5 |
| 1996 | 12.4°C | 10.4°C | 8.5°C | 16.2°C | 5.6°C | 157 mm | 91% | 5.7 m/s | 1.3 |
| 1995 | 13.6°C | 11.3°C | 9.1°C | 18.3°C | 4.3°C | 181 mm | 90% | 5.5 m/s | 1.4 |
| 1994 | 12.0°C | 9.9°C | 7.8°C | 15.6°C | 4.5°C | 78 mm | 91% | 4.6 m/s | 1.3 |
| 1993 | 9.5°C | 7.3°C | 5.1°C | 12.8°C | 0.5°C | 50 mm | 88% | 3.3 m/s | 1.4 |
| 1992 | 9.4°C | 7.5°C | 5.6°C | 14.6°C | 2.0°C | 93 mm | 88% | 4 m/s | 1.4 |
| 1991 | 11.2°C | 9.1°C | 7.0°C | 14.9°C | 5.0°C | 108 mm | 89% | 5.2 m/s | 1.3 |
| 1990 | 12.2°C | 10.4°C | 8.5°C | 17.2°C | 3.5°C | 200 mm | 90% | 5.5 m/s | 1.2 |
| 1989 | 12.3°C | 10.4°C | 8.4°C | 16.3°C | 4.7°C | 177 mm | 90% | 5.1 m/s | 1.2 |
| 1988 | 11.7°C | 9.6°C | 7.5°C | 15.2°C | 2.0°C | 120 mm | 90% | 4.7 m/s | 1.3 |
| 1987 | 10.3°C | 8.1°C | 5.9°C | 14.9°C | 3.2°C | 128 mm | 90% | 4.4 m/s | 1.6 |
| 1986 | 11.9°C | 9.4°C | 6.9°C | 15.9°C | 3.7°C | 109 mm | 89% | 5.4 m/s | 1.4 |
| 1985 | 12.3°C | 10.1°C | 7.9°C | 18.9°C | 3.2°C | 53 mm | 91% | 3.9 m/s | 1.4 |
| 1984 | 11.8°C | 9.5°C | 7.3°C | 16.6°C | 4.0°C | 134 mm | 89% | 5 m/s | 1.3 |
| 1983 | 11.7°C | 9.6°C | 7.5°C | 17.6°C | 1.7°C | 146 mm | 87% | 6.3 m/s | — |
| 1982 | 11.4°C | 9.3°C | 7.1°C | 15.0°C | 3.5°C | 131 mm | 89% | 5.2 m/s | — |
| 1981 ❄️ | 9.0°C | 7.0°C | 5.0°C | 12.1°C | 2.5°C | 155 mm | 87% | 5.3 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 12°C with lows near 7.7°C (mean 9.9°C), based on 45 years of NASA POWER data.
October averages 122 mm of rainfall in Coleraine, a relatively wet time of year. The wettest on record was 200 mm in 2002.
The hottest October reached 19.1°C in 2023. The coldest dipped to 0.5°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.8°C. Daytime highs moved from 11.2°C to 13.1°C and overnight lows from 7°C to 8.8°C over the same span.
October is one of the warmer months of the year in Coleraine and a relatively wet time of year, so plan for around 12°C daytime highs and 7.7°C at night.
Not quite — October is the 7th coolest month in Coleraine, averaging 9.9°C.
For October in Coleraine, pack warm layers and a jacket for chilly mornings, with typical highs of 12°C and lows of 7.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 89% — quite humid.
Average wind speed in October is 4.9 m/s. The windiest October on record averaged 6.3 m/s (1983).
The wettest October on record was 2002 with 200 mm. On average, October sees 122 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 Coleraine 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.
