August is one of the warmer months of the year in Greenock, with average highs near 16.3°C and lows around 10.7°C (mean 13.5°C). It is about average for rainfall, averaging 127 mm of rainfall and 87% relative humidity across the period.
August is one of the warmer months of the year in Greenock. Across 45 years of records, the warmest August in Greenock was 1995 — when the month averaged 15.8°C — while the coldest was 1986 at 11.4°C. Typical August days reach 16.3°C with nights near 10.7°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Greenock, averaging 127 mm of rainfall. The wettest August on record was 1985 with 263 mm, while the driest was 1983 at 34 mm.
Relative humidity in Greenock during August averages 87%. The most humid August was 2008 at 89%, and the least humid was 1986 at 82%.
August receives about 3.7 kWh/m²/day of solar energy in Greenock. The sunniest August was 1995 at 4.6 kWh/m²/day, and the cloudiest were 1985 and 2008 at 3.1.
Average wind speed in Greenock during August is 3.6 m/s. The windiest August was 2024 at 4.7 m/s, while the calmest was 2021 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.0°C | 13.6°C | 13.8°C | 13.2°C | 14.4°C | +1.4°C |
| Avg High | 15.8°C | 16.4°C | 16.6°C | 15.8°C | 17.3°C | +1.5°C |
| Avg Low | 10.2°C | 10.7°C | 11.1°C | 10.6°C | 11.4°C | +1.2°C |
| Avg Rain | 131 mm | 104 mm | 142 mm | 142 mm | 112 mm | -19 mm |
August temperatures in Greenock have risen by about 0.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 5.4°C (1993) to a record high of 24.5°C (2003).
Rainfall in August is about average for rainfall, averaging 127 mm, with a wettest year of 263 mm.
One of the best times to visit Greenock
August is one of the best times to visit Greenock. Expect days averaging 16.3°C and nights around 10.7°C (mean 13.5°C) — warmer than Greenock's yearly average — with higher rainfall (127 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 | 18.1°C | 15.1°C | 12.2°C | 23.4°C | 9.8°C | 94 mm | 85% | 3.8 m/s | 4 |
| 2024 | 15.9°C | 13.5°C | 11.1°C | 18.7°C | 8.3°C | 189 mm | 87% | 4.7 m/s | 3.3 |
| 2023 | 17.1°C | 14.3°C | 11.4°C | 21.7°C | 8.6°C | 78 mm | 86% | 3.6 m/s | 3.9 |
| 2022 | 17.6°C | 14.5°C | 11.4°C | 23.4°C | 8.5°C | 79 mm | 86% | 3 m/s | 4.2 |
| 2021 | 17.7°C | 14.6°C | 11.5°C | 23.2°C | 8.2°C | 90 mm | 86% | 2.6 m/s | 3.5 |
| 2020 | 17.3°C | 14.2°C | 11.0°C | 23.4°C | 7.0°C | 140 mm | 86% | 3.3 m/s | 3.8 |
| 2019 | 16.9°C | 14.4°C | 11.9°C | 22.5°C | 8.3°C | 200 mm | 88% | 3.9 m/s | 3.8 |
| 2018 | 15.5°C | 13.0°C | 10.5°C | 19.2°C | 6.5°C | 147 mm | 88% | 3.6 m/s | 3.3 |
| 2017 | 15.4°C | 12.9°C | 10.3°C | 17.9°C | 8.3°C | 156 mm | 88% | 3.7 m/s | 3.5 |
| 2016 | 16.3°C | 13.7°C | 11.0°C | 20.2°C | 8.1°C | 127 mm | 88% | 3.9 m/s | 3.7 |
| 2015 | 15.5°C | 12.8°C | 10.1°C | 20.6°C | 7.3°C | 115 mm | 87% | 3.6 m/s | 3.7 |
| 2014 | 14.9°C | 12.3°C | 9.7°C | 17.3°C | 6.2°C | 152 mm | 86% | 4.2 m/s | 3.8 |
| 2013 | 16.1°C | 13.6°C | 11.0°C | 18.8°C | 7.9°C | 108 mm | 87% | 3.7 m/s | 3.6 |
| 2012 | 16.6°C | 13.9°C | 11.2°C | 19.8°C | 7.8°C | 157 mm | 88% | 3.3 m/s | 3.8 |
| 2011 | 14.9°C | 12.5°C | 10.0°C | 18.4°C | 8.0°C | 149 mm | 87% | 3.2 m/s | 3.4 |
| 2010 | 15.5°C | 12.7°C | 9.8°C | 19.0°C | 5.8°C | 111 mm | 87% | 3.2 m/s | 4.2 |
| 2009 | 16.0°C | 13.7°C | 11.5°C | 19.0°C | 9.6°C | 256 mm | 89% | 4.3 m/s | 3.4 |
| 2008 | 16.2°C | 13.7°C | 11.3°C | 18.5°C | 8.4°C | 185 mm | 89% | 3.5 m/s | 3.1 |
| 2007 | 15.6°C | 12.9°C | 10.2°C | 21.0°C | 7.5°C | 152 mm | 88% | 3.8 m/s | 3.6 |
| 2006 | 16.3°C | 13.6°C | 10.9°C | 20.4°C | 8.9°C | 87 mm | 87% | 3.4 m/s | 3.8 |
| 2005 | 16.2°C | 13.4°C | 10.5°C | 18.9°C | 7.3°C | 130 mm | 87% | 3.7 m/s | 3.7 |
| 2004 | 17.7°C | 14.9°C | 12.2°C | 22.5°C | 7.7°C | 189 mm | 88% | 3.5 m/s | 3.6 |
| 2003 | 17.8°C | 14.6°C | 11.4°C | 24.5°C | 6.5°C | 59 mm | 85% | 3 m/s | 4.2 |
| 2002 | 17.2°C | 14.2°C | 11.3°C | 21.8°C | 8.8°C | 100 mm | 88% | 2.8 m/s | 3.8 |
| 2001 | 15.9°C | 13.3°C | 10.6°C | 18.0°C | 7.5°C | 144 mm | 88% | 3.1 m/s | 3.6 |
| 2000 | 16.7°C | 13.8°C | 11.0°C | 19.7°C | 7.7°C | 120 mm | 87% | 2.7 m/s | 3.6 |
| 1999 | 16.4°C | 13.4°C | 10.4°C | 22.0°C | 6.3°C | 88 mm | 85% | 3.6 m/s | 3.9 |
| 1998 | 15.5°C | 13.0°C | 10.5°C | 19.2°C | 6.9°C | 136 mm | 89% | 4.1 m/s | 3.7 |
| 1997 | 18.4°C | 15.2°C | 12.0°C | 22.6°C | 8.9°C | 56 mm | 87% | 3.2 m/s | 4.2 |
| 1996 | 16.5°C | 13.7°C | 11.0°C | 19.4°C | 8.7°C | 102 mm | 88% | 3 m/s | 3.7 |
| 1995 🔥 | 19.4°C | 15.8°C | 12.1°C | 24.1°C | 7.5°C | 35 mm | 84% | 2.9 m/s | 4.6 |
| 1994 | 15.5°C | 12.6°C | 9.7°C | 19.8°C | 6.9°C | 121 mm | 86% | 3.1 m/s | 4 |
| 1993 | 14.7°C | 11.9°C | 9.1°C | 19.5°C | 5.4°C | 88 mm | 87% | 3.3 m/s | 3.9 |
| 1992 | 14.5°C | 12.2°C | 9.8°C | 17.3°C | 6.5°C | 212 mm | 86% | 4.5 m/s | 3.8 |
| 1991 | 16.6°C | 14.0°C | 11.3°C | 21.2°C | 8.4°C | 74 mm | 87% | 3.6 m/s | 3.8 |
| 1990 | 16.3°C | 13.8°C | 11.2°C | 21.4°C | 9.0°C | 123 mm | 87% | 3.9 m/s | 3.3 |
| 1989 | 15.3°C | 12.8°C | 10.4°C | 18.7°C | 6.5°C | 190 mm | 87% | 4.6 m/s | 3.3 |
| 1988 | 14.8°C | 12.5°C | 10.2°C | 20.1°C | 6.5°C | 191 mm | 88% | 4.3 m/s | 3.6 |
| 1987 | 15.5°C | 12.6°C | 9.8°C | 18.6°C | 5.6°C | 130 mm | 87% | 3.4 m/s | 3.7 |
| 1986 ❄️ | 14.3°C | 11.4°C | 8.4°C | 17.2°C | 5.6°C | 110 mm | 82% | 3.5 m/s | 3.7 |
| 1985 🌧️ | 14.0°C | 11.7°C | 9.4°C | 16.9°C | 7.4°C | 263 mm | 89% | 4.6 m/s | 3.1 |
| 1984 | 18.4°C | 14.8°C | 11.2°C | 23.5°C | 7.5°C | 53 mm | 82% | 2.9 m/s | 3.9 |
| 1983 | 17.9°C | 14.6°C | 11.3°C | 21.6°C | 7.9°C | 34 mm | 84% | 2.7 m/s | — |
| 1982 | 15.7°C | 13.1°C | 10.5°C | 23.1°C | 6.3°C | 144 mm | 85% | 4.5 m/s | — |
| 1981 | 16.5°C | 13.4°C | 10.3°C | 20.9°C | 7.9°C | 60 mm | 87% | 3.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 16.3°C with lows near 10.7°C (mean 13.5°C), based on 45 years of NASA POWER data.
August averages 127 mm of rainfall in Greenock, about average for rainfall. The wettest on record was 263 mm in 1985.
The hottest August reached 24.5°C in 2003. The coldest dipped to 5.4°C in 1993.
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 16.5°C to 17.3°C and overnight lows from 10.5°C to 11.5°C over the same span.
August is one of the warmer months of the year in Greenock and about average for rainfall, so plan for around 16.3°C daytime highs and 10.7°C at night.
Not quite — August is the 11th coolest month in Greenock, averaging 13.5°C.
For August in Greenock, pack light layers you can adjust through the day, with typical highs of 16.3°C and lows of 10.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 87% — quite humid.
Average wind speed in August is 3.6 m/s. The windiest August on record averaged 4.7 m/s (2024).
The wettest August on record was 1985 with 263 mm. On average, August sees 127 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 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.
