June is one of the warmer months of the year in Greenock, with average highs near 15°C and lows around 9°C (mean 12°C). It is one of the drier months, averaging 96 mm of rainfall and 84% relative humidity across the period.
June is one of the warmer months of the year in Greenock. Across 45 years of records, the warmest June in Greenock was 2023 — when the month averaged 15°C — while the coldest was 1991 at 10.3°C. Typical June days reach 15°C with nights near 9°C. The long-term trend is warming, about 0.3°C per decade.
June is one of the drier months in Greenock, averaging 96 mm of rainfall. The wettest June on record was 2017 with 166 mm, while the driest was 1995 at 44 mm.
Relative humidity in Greenock during June averages 84%. The most humid June was 2002 at 88%, and the least humid was 2018 at 80%.
June receives about 4.9 kWh/m²/day of solar energy in Greenock. The sunniest June was 2018 at 5.8 kWh/m²/day, and the cloudiest was 2012 at 4.
Average wind speed in Greenock during June is 3.6 m/s. The windiest June was 2002 at 4.7 m/s, while the calmest was 1988 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.6°C | 11.5°C | 12.1°C | 12.2°C | 12.9°C | +1.3°C |
| Avg High | 14.8°C | 14.5°C | 14.9°C | 15.1°C | 16.1°C | +1.3°C |
| Avg Low | 8.4°C | 8.4°C | 9.3°C | 9.3°C | 9.8°C | +1.4°C |
| Avg Rain | 77 mm | 96 mm | 112 mm | 101 mm | 89 mm | +12 mm |
June temperatures in Greenock have risen by about 1.4°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 1.9°C (1989) to a record high of 25.2°C (2018).
Rainfall in June is one of the drier months, averaging 96 mm, with a wettest year of 166 mm.
One of the best times to visit Greenock
June is one of the best times to visit Greenock. Expect days averaging 15°C and nights around 9°C (mean 12°C) — warmer than Greenock's yearly average — with higher rainfall (96 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 | 15.5°C | 12.7°C | 9.8°C | 21.7°C | 5.7°C | 120 mm | 85% | 4.3 m/s | 4.5 |
| 2024 | 14.2°C | 11.4°C | 8.7°C | 19.5°C | 4.6°C | 62 mm | 84% | 4.2 m/s | 4.9 |
| 2023 🔥 | 19.0°C | 15.0°C | 11.0°C | 23.8°C | 7.1°C | 77 mm | 82% | 2.9 m/s | 5.6 |
| 2022 | 15.4°C | 12.6°C | 9.7°C | 18.4°C | 6.4°C | 102 mm | 84% | 4.1 m/s | 5 |
| 2021 | 16.0°C | 12.8°C | 9.6°C | 20.8°C | 6.9°C | 57 mm | 83% | 3.3 m/s | 5.2 |
| 2020 | 16.3°C | 13.1°C | 10.0°C | 23.2°C | 5.8°C | 115 mm | 84% | 3.7 m/s | 4.7 |
| 2019 | 15.1°C | 12.2°C | 9.2°C | 22.6°C | 7.3°C | 103 mm | 84% | 3.6 m/s | 4.9 |
| 2018 | 17.4°C | 13.7°C | 10.0°C | 25.2°C | 7.2°C | 76 mm | 80% | 3 m/s | 5.8 |
| 2017 🌧️ | 14.6°C | 12.3°C | 10.0°C | 18.7°C | 7.3°C | 166 mm | 87% | 4.3 m/s | 4.1 |
| 2016 | 16.1°C | 13.0°C | 9.8°C | 22.3°C | 6.7°C | 91 mm | 85% | 3.1 m/s | 4.8 |
| 2015 | 13.6°C | 10.8°C | 8.0°C | 19.6°C | 4.9°C | 111 mm | 85% | 3.8 m/s | 4.7 |
| 2014 | 16.1°C | 13.1°C | 10.1°C | 20.5°C | 7.6°C | 82 mm | 85% | 2.8 m/s | 5 |
| 2013 | 14.7°C | 11.7°C | 8.8°C | 19.0°C | 4.6°C | 82 mm | 84% | 3.1 m/s | 4.9 |
| 2012 | 14.0°C | 11.4°C | 8.7°C | 18.6°C | 4.8°C | 143 mm | 84% | 3.4 m/s | 4 |
| 2011 | 13.4°C | 10.8°C | 8.2°C | 19.5°C | 5.6°C | 113 mm | 85% | 3.2 m/s | 4.5 |
| 2010 | 16.2°C | 13.0°C | 9.7°C | 18.7°C | 6.4°C | 46 mm | 83% | 2.8 m/s | 5.6 |
| 2009 | 16.0°C | 12.8°C | 9.6°C | 22.4°C | 5.5°C | 68 mm | 82% | 3.2 m/s | 5.5 |
| 2008 | 14.4°C | 11.6°C | 8.7°C | 17.9°C | 5.3°C | 104 mm | 83% | 4 m/s | 4.8 |
| 2007 | 15.4°C | 12.5°C | 9.6°C | 21.5°C | 6.8°C | 126 mm | 86% | 3.3 m/s | 4.5 |
| 2006 | 15.8°C | 12.8°C | 9.7°C | 21.4°C | 7.4°C | 95 mm | 85% | 3.4 m/s | 5 |
| 2005 | 15.4°C | 12.6°C | 9.9°C | 20.8°C | 6.8°C | 134 mm | 87% | 3.1 m/s | 4.5 |
| 2004 | 14.7°C | 12.0°C | 9.4°C | 18.4°C | 6.4°C | 118 mm | 86% | 4 m/s | 4.5 |
| 2003 | 15.5°C | 12.9°C | 10.4°C | 19.3°C | 8.1°C | 116 mm | 86% | 4 m/s | 4.8 |
| 2002 | 13.8°C | 11.6°C | 9.4°C | 19.2°C | 6.6°C | 165 mm | 88% | 4.7 m/s | 4.4 |
| 2001 | 13.6°C | 10.9°C | 8.2°C | 17.6°C | 3.7°C | 97 mm | 85% | 4.1 m/s | 4.3 |
| 2000 | 14.6°C | 11.6°C | 8.5°C | 21.8°C | 4.3°C | 96 mm | 84% | 3.9 m/s | 4.4 |
| 1999 | 13.8°C | 10.9°C | 7.9°C | 18.5°C | 3.5°C | 118 mm | 85% | 3.4 m/s | 4.8 |
| 1998 | 14.1°C | 11.1°C | 8.1°C | 20.0°C | 3.9°C | 123 mm | 84% | 3.5 m/s | 4.8 |
| 1997 | 14.7°C | 11.4°C | 8.0°C | 17.4°C | 6.1°C | 76 mm | 82% | 3.9 m/s | 4.8 |
| 1996 | 14.4°C | 11.3°C | 8.2°C | 20.2°C | 4.9°C | 75 mm | 84% | 3.9 m/s | 5.7 |
| 1995 | 15.9°C | 12.2°C | 8.4°C | 24.2°C | 4.5°C | 44 mm | 81% | 3.4 m/s | 5.7 |
| 1994 | 13.2°C | 10.7°C | 8.2°C | 17.5°C | 5.7°C | 114 mm | 86% | 4.6 m/s | 4.5 |
| 1993 | 14.9°C | 12.0°C | 9.1°C | 18.7°C | 4.5°C | 83 mm | 86% | 3.4 m/s | 4.6 |
| 1992 | 16.6°C | 13.1°C | 9.6°C | 20.7°C | 7.3°C | 56 mm | 83% | 3.4 m/s | 5.3 |
| 1991 ❄️ | 13.3°C | 10.3°C | 7.4°C | 15.9°C | 2.9°C | 132 mm | 83% | 3.4 m/s | 4.5 |
| 1990 | 14.5°C | 11.7°C | 9.0°C | 19.5°C | 7.5°C | 135 mm | 84% | 3.5 m/s | 4.5 |
| 1989 | 14.6°C | 11.6°C | 8.5°C | 23.4°C | 1.9°C | 92 mm | 81% | 3.3 m/s | 5.1 |
| 1988 | 16.6°C | 12.9°C | 9.2°C | 21.2°C | 4.8°C | 45 mm | 83% | 2.6 m/s | 5.5 |
| 1987 | 13.4°C | 10.5°C | 7.6°C | 17.1°C | 4.3°C | 80 mm | 81% | 2.8 m/s | 4.7 |
| 1986 | 15.6°C | 11.9°C | 8.1°C | 22.8°C | 3.3°C | 60 mm | 84% | 3.8 m/s | 4.9 |
| 1985 | 13.7°C | 10.6°C | 7.4°C | 19.5°C | 3.6°C | 75 mm | 81% | 3.3 m/s | 4.9 |
| 1984 | 14.9°C | 11.8°C | 8.7°C | 20.4°C | 5.7°C | 74 mm | 83% | 3.8 m/s | 4.8 |
| 1983 | 14.1°C | 11.1°C | 8.2°C | 19.7°C | 3.8°C | 88 mm | 85% | 3.9 m/s | — |
| 1982 | 15.9°C | 12.6°C | 9.3°C | 24.9°C | 5.2°C | 67 mm | 81% | 3.4 m/s | — |
| 1981 | 14.0°C | 11.3°C | 8.6°C | 16.6°C | 4.0°C | 110 mm | 84% | 4.2 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 15°C with lows near 9°C (mean 12°C), based on 45 years of NASA POWER data.
June averages 96 mm of rainfall in Greenock, one of the drier months. The wettest on record was 166 mm in 2017.
The hottest June reached 25.2°C in 2018. The coldest dipped to 1.9°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.4°C. Daytime highs moved from 14.5°C to 16°C and overnight lows from 8.4°C to 9.8°C over the same span.
June is one of the warmer months of the year in Greenock and one of the drier months, so plan for around 15°C daytime highs and 9°C at night.
Not quite — June is the 10th coolest month in Greenock, averaging 12°C.
For June in Greenock, pack light layers you can adjust through the day, with typical highs of 15°C and lows of 9°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 84% — quite humid.
Average wind speed in June is 3.6 m/s. The windiest June on record averaged 4.7 m/s (2002).
The wettest June on record was 2017 with 166 mm. On average, June sees 96 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 Greenock 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.
