March is one of the cooler months of the year in Greenock, with average highs near 7°C and lows around 2.6°C (mean 4.8°C). It is about average for rainfall, averaging 122 mm of rainfall and 90% relative humidity across the period.
March is one of the cooler months of the year in Greenock. Across 45 years of records, the warmest March in Greenock was 2012 — when the month averaged 7.1°C — while the coldest was 2013 at 1.8°C. Typical March days reach 7°C with nights near 2.6°C. The long-term trend is warming, about 0.2°C per decade.
March is about average for rainfall in Greenock, averaging 122 mm of rainfall. The wettest March on record was 1994 with 225 mm, while the driest was 2013 at 43 mm.
Relative humidity in Greenock during March averages 90%. The most humid March was 1991 at 93%, and the least humid was 2013 at 88%.
March receives about 2.2 kWh/m²/day of solar energy in Greenock. The sunniest March was 2022 at 2.8 kWh/m²/day, and the cloudiest were 1990 and 1994 at 1.7.
Average wind speed in Greenock during March is 4.8 m/s. The windiest March was 1994 at 7 m/s, while the calmest were 2011 and 2023 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.0°C | 5.0°C | 4.9°C | 4.7°C | 5.5°C | +1.5°C |
| Avg High | 6.1°C | 7.0°C | 7.2°C | 6.9°C | 8.0°C | +1.9°C |
| Avg Low | 2.0°C | 2.9°C | 2.6°C | 2.5°C | 3.0°C | +1°C |
| Avg Rain | 141 mm | 148 mm | 109 mm | 102 mm | 103 mm | -37 mm |
March temperatures in Greenock have risen by about 1.5°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -5.5°C (2010) to a record high of 15.1°C (2012).
Rainfall in March is about average for rainfall, averaging 122 mm, with a wettest year of 225 mm.
A quieter season to visit Greenock
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Greenock. That said, March — with days averaging 7°C and nights around 2.6°C (mean 4.8°C) and higher rainfall (122 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 9.2°C | 6.3°C | 3.5°C | 13.4°C | -1.1°C | 62 mm | 89% | 4.1 m/s | 2.5 |
| 2024 | 8.1°C | 5.7°C | 3.3°C | 11.5°C | 0.1°C | 113 mm | 90% | 4.9 m/s | 2.2 |
| 2023 | 6.8°C | 4.5°C | 2.1°C | 11.7°C | -2.3°C | 129 mm | 90% | 3.5 m/s | 2.3 |
| 2022 | 9.1°C | 6.0°C | 2.9°C | 14.6°C | -1.0°C | 63 mm | 88% | 3.8 m/s | 2.8 |
| 2021 | 8.0°C | 5.9°C | 3.8°C | 12.0°C | -0.9°C | 135 mm | 91% | 4.6 m/s | 2.2 |
| 2020 | 6.9°C | 4.5°C | 2.2°C | 9.9°C | -1.4°C | 118 mm | 90% | 4.8 m/s | 2.3 |
| 2019 | 7.4°C | 5.6°C | 3.7°C | 10.6°C | 0.1°C | 155 mm | 90% | 5.4 m/s | 2.2 |
| 2018 | 4.9°C | 2.9°C | 0.8°C | 7.7°C | -3.7°C | 93 mm | 89% | 4.9 m/s | 2.1 |
| 2017 | 8.2°C | 5.8°C | 3.5°C | 13.0°C | -0.1°C | 104 mm | 89% | 4.2 m/s | 2.4 |
| 2016 | 7.0°C | 4.8°C | 2.7°C | 10.4°C | -0.9°C | 97 mm | 90% | 3.6 m/s | 2.5 |
| 2015 | 6.9°C | 4.5°C | 2.2°C | 10.5°C | -0.8°C | 158 mm | 89% | 5.4 m/s | 2.3 |
| 2014 | 7.4°C | 5.3°C | 3.2°C | 9.5°C | -0.3°C | 126 mm | 91% | 5.2 m/s | 2.2 |
| 2013 ❄️ | 3.8°C | 1.8°C | -0.2°C | 7.4°C | -2.7°C | 43 mm | 88% | 4.9 m/s | 2.1 |
| 2012 🔥 | 9.6°C | 7.1°C | 4.7°C | 15.1°C | 0.8°C | 55 mm | 90% | 3.9 m/s | 2.4 |
| 2011 | 7.3°C | 5.1°C | 2.8°C | 11.7°C | 0.1°C | 87 mm | 91% | 3.5 m/s | 2.2 |
| 2010 | 6.1°C | 3.9°C | 1.6°C | 8.9°C | -5.5°C | 100 mm | 91% | 4.1 m/s | 2.3 |
| 2009 | 7.4°C | 5.3°C | 3.2°C | 11.0°C | -0.4°C | 128 mm | 90% | 5.2 m/s | 2.4 |
| 2008 | 6.3°C | 4.1°C | 1.9°C | 9.0°C | -1.2°C | 151 mm | 88% | 5.4 m/s | 2.4 |
| 2007 | 7.9°C | 5.4°C | 2.8°C | 10.9°C | -1.3°C | 119 mm | 90% | 5.4 m/s | 2.4 |
| 2006 | 5.2°C | 3.1°C | 0.9°C | 11.1°C | -2.4°C | 156 mm | 90% | 4.3 m/s | 2.1 |
| 2005 | 8.1°C | 6.0°C | 3.8°C | 12.5°C | -1.0°C | 88 mm | 91% | 4.4 m/s | 2.1 |
| 2004 | 7.6°C | 5.2°C | 2.8°C | 11.0°C | -1.3°C | 92 mm | 91% | 4.7 m/s | 2.3 |
| 2003 | 8.8°C | 6.1°C | 3.4°C | 12.4°C | 0.1°C | 76 mm | 90% | 3.9 m/s | 2.7 |
| 2002 | 7.9°C | 5.5°C | 3.1°C | 11.3°C | -0.7°C | 98 mm | 90% | 5 m/s | 2.5 |
| 2001 | 5.4°C | 3.1°C | 0.7°C | 9.6°C | -3.8°C | 81 mm | 89% | 4.3 m/s | 2.5 |
| 2000 | 7.7°C | 5.5°C | 3.3°C | 10.4°C | -0.6°C | 99 mm | 91% | 4.6 m/s | 2.1 |
| 1999 | 7.1°C | 5.0°C | 2.9°C | 11.0°C | -1.3°C | 121 mm | 91% | 4.7 m/s | 2.3 |
| 1998 | 7.7°C | 5.7°C | 3.7°C | 10.8°C | -0.9°C | 121 mm | 91% | 4.5 m/s | 1.9 |
| 1997 | 8.2°C | 6.2°C | 4.2°C | 10.4°C | -0.4°C | 143 mm | 92% | 5.2 m/s | 2 |
| 1996 | 5.7°C | 3.3°C | 0.8°C | 9.6°C | -1.8°C | 71 mm | 89% | 4.4 m/s | 2.1 |
| 1995 | 5.0°C | 3.1°C | 1.2°C | 10.0°C | -2.9°C | 156 mm | 90% | 5.2 m/s | 2 |
| 1994 🌧️ | 6.2°C | 4.3°C | 2.4°C | 9.3°C | -1.3°C | 225 mm | 90% | 7 m/s | 1.7 |
| 1993 | 7.0°C | 4.9°C | 2.7°C | 10.6°C | -1.9°C | 131 mm | 91% | 5.3 m/s | 1.8 |
| 1992 | 7.3°C | 5.4°C | 3.5°C | 10.0°C | 0.0°C | 189 mm | 91% | 5.8 m/s | 2 |
| 1991 | 7.8°C | 5.6°C | 3.5°C | 10.2°C | 0.4°C | 130 mm | 93% | 3.9 m/s | 1.8 |
| 1990 | 7.9°C | 6.2°C | 4.4°C | 11.2°C | -0.8°C | 194 mm | 91% | 6.9 m/s | 1.7 |
| 1989 | 6.9°C | 4.8°C | 2.7°C | 10.2°C | -1.9°C | 198 mm | 91% | 5.7 m/s | 1.8 |
| 1988 | 6.2°C | 4.2°C | 2.2°C | 10.0°C | -1.2°C | 143 mm | 90% | 4.6 m/s | 1.9 |
| 1987 | 4.6°C | 2.6°C | 0.6°C | 8.2°C | -2.3°C | 143 mm | 90% | 5 m/s | 2.2 |
| 1986 | 5.6°C | 3.6°C | 1.7°C | 8.7°C | -5.2°C | 180 mm | 91% | 5.8 m/s | 2.1 |
| 1985 | 5.4°C | 3.2°C | 1.0°C | 9.5°C | -2.4°C | 87 mm | 89% | 4.4 m/s | 1.9 |
| 1984 | 5.7°C | 3.5°C | 1.3°C | 9.5°C | -1.7°C | 71 mm | 88% | 3.6 m/s | 1.9 |
| 1983 | 6.8°C | 5.1°C | 3.3°C | 10.0°C | -0.1°C | 134 mm | 92% | 5.4 m/s | — |
| 1982 | 6.6°C | 4.4°C | 2.3°C | 11.8°C | -0.4°C | 156 mm | 89% | 5.1 m/s | — |
| 1981 | 7.2°C | 4.9°C | 2.7°C | 11.3°C | -2.2°C | 154 mm | 89% | 4.6 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 7°C with lows near 2.6°C (mean 4.8°C), based on 45 years of NASA POWER data.
March averages 122 mm of rainfall in Greenock, about average for rainfall. The wettest on record was 225 mm in 1994.
The hottest March reached 15.1°C in 2012. The coldest dipped to -5.5°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.5°C. Daytime highs moved from 6.3°C to 8.2°C and overnight lows from 2.1°C to 3.1°C over the same span.
March is one of the cooler months of the year in Greenock and about average for rainfall, so plan for around 7°C daytime highs and 2.6°C at night.
Not quite — March is the 4th coolest month in Greenock, averaging 4.8°C.
For March in Greenock, pack warm layers and a jacket for chilly mornings, with typical highs of 7°C and lows of 2.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 90% — quite humid.
Average wind speed in March is 4.8 m/s. The windiest March on record averaged 7 m/s (1994).
The wettest March on record was 1994 with 225 mm. On average, March 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 Greenock behaves each March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
