June is one of the warmer months of the year in Coleraine, with average highs near 15.3°C and lows around 9.5°C (mean 12.4°C). It is one of the drier months, averaging 87 mm of rainfall and 84% relative humidity across the period.
June is one of the warmer months of the year in Coleraine. Across 45 years of records, the warmest June in Coleraine was 2023 — when the month averaged 15.6°C — while the coldest was 1987 at 10.6°C. Typical June days reach 15.3°C with nights near 9.5°C. The long-term trend is warming, about 0.3°C per decade.
June is one of the drier months in Coleraine, averaging 87 mm of rainfall. The wettest June on record was 2012 with 166 mm, while the driest was 1995 at 38 mm.
Relative humidity in Coleraine during June averages 84%. The most humid June was 2005 at 87%, and the least humid was 2018 at 81%.
June receives about 5 kWh/m²/day of solar energy in Coleraine. The sunniest June was 2009 at 6.2 kWh/m²/day, and the cloudiest was 1994 at 4.2.
Average wind speed in Coleraine during June is 3.8 m/s. The windiest Junes were 1994 and 2002 at 4.7 m/s, while the calmest were 1988 and 2023 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.1°C | 11.9°C | 12.6°C | 12.6°C | 13.2°C | +1.1°C |
| Avg High | 15.0°C | 14.8°C | 15.4°C | 15.5°C | 16.3°C | +1.3°C |
| Avg Low | 9.1°C | 9.1°C | 9.8°C | 9.6°C | 10.2°C | +1.1°C |
| Avg Rain | 74 mm | 86 mm | 92 mm | 94 mm | 89 mm | +16 mm |
June temperatures in Coleraine have risen by about 1.3°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 4°C (1987) to a record high of 24.8°C (1995).
Rainfall in June is one of the drier months, averaging 87 mm, with a wettest year of 166 mm.
One of the best times to visit Coleraine
June is one of the best times to visit Coleraine. Expect days averaging 15.3°C and nights around 9.5°C (mean 12.4°C) — warmer than Coleraine's yearly average — with higher rainfall (87 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 | 16.5°C | 13.3°C | 10.2°C | 23.2°C | 6.6°C | 113 mm | 84% | 4.3 m/s | 4.6 |
| 2024 | 14.6°C | 11.8°C | 8.9°C | 21.5°C | 6.8°C | 50 mm | 83% | 4.5 m/s | 4.9 |
| 2023 🔥 | 19.1°C | 15.6°C | 12.0°C | 22.9°C | 8.7°C | 78 mm | 83% | 2.9 m/s | 5.8 |
| 2022 | 16.0°C | 13.0°C | 10.1°C | 18.2°C | 7.5°C | 86 mm | 84% | 4.1 m/s | 5 |
| 2021 | 15.9°C | 12.8°C | 9.8°C | 19.3°C | 7.1°C | 59 mm | 85% | 3.8 m/s | 4.8 |
| 2020 | 15.5°C | 12.7°C | 9.9°C | 20.9°C | 5.5°C | 151 mm | 86% | 4.1 m/s | 4.6 |
| 2019 | 14.8°C | 12.1°C | 9.4°C | 20.3°C | 7.0°C | 113 mm | 85% | 3.8 m/s | 5.4 |
| 2018 | 17.8°C | 14.3°C | 10.8°C | 24.6°C | 7.4°C | 62 mm | 81% | 3 m/s | 5.3 |
| 2017 | 15.6°C | 12.9°C | 10.1°C | 20.7°C | 7.4°C | 113 mm | 86% | 4.4 m/s | 4.3 |
| 2016 | 16.4°C | 13.5°C | 10.7°C | 21.4°C | 7.8°C | 112 mm | 86% | 3.1 m/s | 4.7 |
| 2015 | 14.4°C | 11.4°C | 8.4°C | 21.2°C | 4.5°C | 70 mm | 84% | 4.3 m/s | 5 |
| 2014 | 15.7°C | 12.9°C | 10.0°C | 19.4°C | 7.4°C | 71 mm | 86% | 3.2 m/s | 5 |
| 2013 | 15.5°C | 12.3°C | 9.1°C | 19.1°C | 5.4°C | 81 mm | 84% | 3.4 m/s | 5.1 |
| 2012 🌧️ | 14.1°C | 11.7°C | 9.2°C | 20.0°C | 6.0°C | 166 mm | 86% | 3.8 m/s | 4.3 |
| 2011 | 14.0°C | 11.1°C | 8.3°C | 20.6°C | 4.9°C | 102 mm | 85% | 3.4 m/s | 4.9 |
| 2010 | 16.5°C | 13.4°C | 10.3°C | 20.0°C | 7.5°C | 48 mm | 84% | 3.1 m/s | 5.6 |
| 2009 | 16.1°C | 12.9°C | 9.8°C | 21.4°C | 5.7°C | 57 mm | 83% | 3.4 m/s | 6.2 |
| 2008 | 15.0°C | 12.1°C | 9.3°C | 19.6°C | 7.3°C | 80 mm | 82% | 4.2 m/s | 5.1 |
| 2007 | 15.6°C | 13.0°C | 10.3°C | 21.5°C | 8.2°C | 144 mm | 87% | 3.8 m/s | 5.1 |
| 2006 | 16.5°C | 13.4°C | 10.3°C | 21.0°C | 7.3°C | 59 mm | 84% | 3.5 m/s | 5.2 |
| 2005 | 15.8°C | 13.1°C | 10.4°C | 20.8°C | 6.9°C | 92 mm | 87% | 3.5 m/s | 4.5 |
| 2004 | 15.5°C | 12.9°C | 10.2°C | 19.1°C | 7.5°C | 109 mm | 85% | 4.5 m/s | 4.8 |
| 2003 | 15.9°C | 13.0°C | 10.0°C | 18.5°C | 7.7°C | 86 mm | 85% | 4.1 m/s | 4.9 |
| 2002 | 14.3°C | 11.8°C | 9.3°C | 17.2°C | 6.7°C | 137 mm | 87% | 4.7 m/s | 4.6 |
| 2001 | 14.2°C | 11.5°C | 8.8°C | 18.3°C | 4.7°C | 78 mm | 85% | 4.1 m/s | 4.6 |
| 2000 | 15.0°C | 12.3°C | 9.5°C | 22.1°C | 5.4°C | 80 mm | 85% | 4.1 m/s | 5 |
| 1999 | 14.2°C | 11.4°C | 8.5°C | 19.1°C | 4.6°C | 88 mm | 85% | 3.8 m/s | 4.7 |
| 1998 | 14.6°C | 11.8°C | 9.0°C | 20.8°C | 4.1°C | 134 mm | 85% | 4 m/s | 5.2 |
| 1997 | 14.4°C | 11.6°C | 8.9°C | 17.4°C | 5.6°C | 96 mm | 84% | 4.4 m/s | 5.2 |
| 1996 | 14.9°C | 11.9°C | 8.9°C | 20.1°C | 6.2°C | 49 mm | 83% | 4 m/s | 5.4 |
| 1995 | 15.5°C | 12.5°C | 9.4°C | 24.8°C | 6.7°C | 38 mm | 83% | 3.8 m/s | 5.3 |
| 1994 | 14.2°C | 11.5°C | 8.8°C | 18.6°C | 5.9°C | 83 mm | 86% | 4.7 m/s | 4.2 |
| 1993 | 15.6°C | 12.7°C | 9.9°C | 20.3°C | 7.1°C | 96 mm | 86% | 3.3 m/s | 4.5 |
| 1992 | 16.5°C | 13.3°C | 10.2°C | 20.2°C | 7.0°C | 53 mm | 84% | 3.5 m/s | 4.7 |
| 1991 | 13.4°C | 10.7°C | 8.0°C | 16.6°C | 4.5°C | 102 mm | 84% | 4.1 m/s | 5 |
| 1990 | 14.5°C | 11.9°C | 9.3°C | 17.2°C | 7.8°C | 121 mm | 83% | 4.1 m/s | 5 |
| 1989 | 15.3°C | 12.3°C | 9.2°C | 23.4°C | 4.7°C | 80 mm | 82% | 3.7 m/s | 5.1 |
| 1988 | 16.3°C | 13.1°C | 9.8°C | 18.7°C | 7.1°C | 53 mm | 84% | 2.9 m/s | 5.3 |
| 1987 ❄️ | 13.4°C | 10.6°C | 7.9°C | 17.7°C | 4.0°C | 82 mm | 84% | 3.4 m/s | 5.1 |
| 1986 | 15.7°C | 12.4°C | 9.2°C | 22.8°C | 4.9°C | 55 mm | 85% | 4 m/s | 4.8 |
| 1985 | 13.9°C | 10.9°C | 7.9°C | 18.2°C | 4.5°C | 69 mm | 82% | 3.8 m/s | 5.3 |
| 1984 | 15.7°C | 12.5°C | 9.3°C | 19.9°C | 5.8°C | 62 mm | 84% | 4 m/s | 4.3 |
| 1983 | 15.0°C | 12.0°C | 9.0°C | 20.1°C | 6.3°C | 65 mm | 85% | 3.9 m/s | — |
| 1982 | 16.0°C | 13.1°C | 10.2°C | 22.5°C | 6.6°C | 94 mm | 85% | 3.5 m/s | — |
| 1981 | 13.9°C | 11.6°C | 9.2°C | 18.4°C | 6.8°C | 103 mm | 85% | 4.6 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 15.3°C with lows near 9.5°C (mean 12.4°C), based on 45 years of NASA POWER data.
June averages 87 mm of rainfall in Coleraine, one of the drier months. The wettest on record was 166 mm in 2012.
The hottest June reached 24.8°C in 1995. The coldest dipped to 4°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.3°C. Daytime highs moved from 14.9°C to 16.4°C and overnight lows from 9.1°C to 10.2°C over the same span.
June is one of the warmer months of the year in Coleraine and one of the drier months, so plan for around 15.3°C daytime highs and 9.5°C at night.
Not quite — June is the 9th coolest month in Coleraine, averaging 12.4°C.
For June in Coleraine, pack light layers you can adjust through the day, with typical highs of 15.3°C and lows of 9.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 84% — quite humid.
Average wind speed in June is 3.8 m/s. The windiest June on record averaged 4.7 m/s (1994).
The wettest June on record was 2012 with 166 mm. On average, June sees 87 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 June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
