March is one of the warmer months of the year in Greymouth, with average highs near 16.8°C and lows around 11.2°C (mean 14°C). It is one of the drier months, averaging 145 mm of rainfall and 84% relative humidity across the period.
March is one of the warmer months of the year in Greymouth. Across 45 years of records, the warmest Marchs in Greymouth were 2019 and 2022 — when the month averaged 16°C — while the coldest was 1992 at 11.6°C. Typical March days reach 16.8°C with nights near 11.2°C. The long-term March temperature trend is broadly flat.
March is one of the drier months in Greymouth, averaging 145 mm of rainfall. The wettest March on record was 1981 with 262 mm, while the driest was 1991 at 44 mm.
Relative humidity in Greymouth during March averages 84%. The most humid March was 2007 at 87%, and the least humid was 1985 at 79%.
March receives about 4 kWh/m²/day of solar energy in Greymouth. The sunniest March was 2022 at 4.7 kWh/m²/day, and the cloudiest were 2002, 2004 and 2018, among others at 3.7.
Average wind speed in Greymouth during March is 1.2 m/s. The windiest Marchs were 1994, 1995 and 1998, among others at 1.4 m/s, while the calmest was 1991 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.0°C | 13.6°C | 13.9°C | 14.3°C | 14.2°C | +0.2°C |
| Avg High | 16.8°C | 16.4°C | 16.7°C | 17.2°C | 17.0°C | +0.2°C |
| Avg Low | 11.1°C | 10.8°C | 11.1°C | 11.5°C | 11.4°C | +0.3°C |
| Avg Rain | 160 mm | 147 mm | 130 mm | 147 mm | 143 mm | -17 mm |
March temperatures in Greymouth have stayed relatively stable across the record.
March has ranged from a record low of 2.4°C (1983) to a record high of 22.5°C (2013).
Rainfall in March is one of the drier months, averaging 145 mm, with a wettest year of 262 mm.
One of the best times to visit Greymouth
March is one of the best times to visit Greymouth. Expect days averaging 16.8°C and nights around 11.2°C (mean 14°C) — warmer than Greymouth's yearly average — with higher rainfall (145 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 | 17.8°C | 14.9°C | 11.9°C | 20.6°C | 6.7°C | 77 mm | 84% | 1 m/s | 4.2 |
| 2024 | 15.1°C | 12.5°C | 9.8°C | 18.0°C | 5.1°C | 112 mm | 85% | 1.2 m/s | 3.9 |
| 2023 | 16.6°C | 14.0°C | 11.3°C | 20.4°C | 5.6°C | 250 mm | 85% | 1.3 m/s | 3.9 |
| 2022 | 19.2°C | 16.0°C | 12.9°C | 21.4°C | 10.2°C | 54 mm | 82% | 1 m/s | 4.7 |
| 2021 | 16.9°C | 14.3°C | 11.7°C | 18.9°C | 9.1°C | 217 mm | 86% | 1.2 m/s | 4 |
| 2020 | 16.5°C | 13.5°C | 10.6°C | 19.4°C | 6.9°C | 146 mm | 82% | 1.2 m/s | 4.2 |
| 2019 🔥 | 18.7°C | 16.0°C | 13.4°C | 20.7°C | 9.8°C | 234 mm | 86% | 1 m/s | 3.9 |
| 2018 | 17.5°C | 15.0°C | 12.5°C | 21.3°C | 7.9°C | 168 mm | 86% | 1.3 m/s | 3.7 |
| 2017 | 16.8°C | 13.9°C | 11.1°C | 20.2°C | 7.3°C | 161 mm | 86% | 1 m/s | 4 |
| 2016 | 17.3°C | 14.6°C | 11.9°C | 20.2°C | 6.8°C | 166 mm | 86% | 1.1 m/s | 3.8 |
| 2015 | 17.3°C | 14.7°C | 12.0°C | 19.8°C | 6.8°C | 252 mm | 85% | 1.1 m/s | 3.9 |
| 2014 | 16.8°C | 13.8°C | 10.7°C | 20.9°C | 6.3°C | 69 mm | 84% | 1 m/s | 4.3 |
| 2013 | 18.5°C | 15.4°C | 12.3°C | 22.5°C | 7.8°C | 64 mm | 83% | 1 m/s | 4.3 |
| 2012 | 15.9°C | 12.9°C | 9.9°C | 19.9°C | 6.8°C | 100 mm | 83% | 1.2 m/s | 4 |
| 2011 | 16.6°C | 13.6°C | 10.7°C | 19.1°C | 7.4°C | 142 mm | 83% | 1.2 m/s | 4.2 |
| 2010 | 16.1°C | 13.4°C | 10.7°C | 20.5°C | 7.1°C | 109 mm | 86% | 1.2 m/s | 3.8 |
| 2009 | 16.1°C | 13.4°C | 10.6°C | 19.7°C | 5.7°C | 106 mm | 84% | 1.3 m/s | 4.1 |
| 2008 | 17.6°C | 14.8°C | 12.0°C | 19.8°C | 8.6°C | 130 mm | 85% | 1.1 m/s | 4 |
| 2007 | 16.9°C | 14.3°C | 11.8°C | 19.3°C | 7.6°C | 176 mm | 87% | 1.3 m/s | 3.9 |
| 2006 | 15.2°C | 12.3°C | 9.5°C | 18.0°C | 6.4°C | 102 mm | 83% | 1.3 m/s | 4.1 |
| 2005 | 16.6°C | 14.0°C | 11.3°C | 20.0°C | 8.3°C | 149 mm | 86% | 1.2 m/s | 3.9 |
| 2004 | 15.1°C | 12.6°C | 10.1°C | 18.1°C | 5.7°C | 170 mm | 87% | 1.2 m/s | 3.7 |
| 2003 | 18.1°C | 15.0°C | 12.0°C | 21.3°C | 9.1°C | 99 mm | 85% | 1 m/s | 4.5 |
| 2002 | 16.5°C | 14.1°C | 11.7°C | 19.7°C | 6.9°C | 166 mm | 86% | 1.3 m/s | 3.7 |
| 2001 | 17.7°C | 14.6°C | 11.5°C | 21.3°C | 7.4°C | 123 mm | 81% | 1.1 m/s | 4.4 |
| 2000 | 16.7°C | 13.6°C | 10.4°C | 20.3°C | 6.5°C | 79 mm | 83% | 1.1 m/s | 4.3 |
| 1999 | 18.2°C | 15.5°C | 12.8°C | 21.0°C | 9.4°C | 113 mm | 84% | 1.2 m/s | 4 |
| 1998 | 16.7°C | 14.3°C | 11.8°C | 20.8°C | 8.6°C | 183 mm | 86% | 1.4 m/s | 3.7 |
| 1997 | 16.1°C | 13.3°C | 10.4°C | 19.4°C | 6.8°C | 102 mm | 82% | 1.3 m/s | 4.3 |
| 1996 | 16.2°C | 13.4°C | 10.6°C | 18.9°C | 7.1°C | 244 mm | 82% | 1.3 m/s | 3.9 |
| 1995 | 16.0°C | 13.4°C | 10.8°C | 20.0°C | 6.2°C | 201 mm | 84% | 1.4 m/s | 4 |
| 1994 | 16.3°C | 13.2°C | 10.1°C | 18.6°C | 5.1°C | 156 mm | 83% | 1.4 m/s | 4 |
| 1993 | 15.7°C | 12.8°C | 10.0°C | 20.0°C | 5.1°C | 209 mm | 82% | 1.3 m/s | 4 |
| 1992 ❄️ | 14.2°C | 11.6°C | 8.9°C | 19.2°C | 4.8°C | 137 mm | 84% | 1.4 m/s | 3.8 |
| 1991 | 17.0°C | 14.0°C | 11.0°C | 19.0°C | 7.7°C | 44 mm | 84% | 0.9 m/s | 4.2 |
| 1990 | 17.6°C | 14.7°C | 11.8°C | 20.1°C | 5.9°C | 86 mm | 84% | 1.1 m/s | 4.1 |
| 1989 | 17.0°C | 14.2°C | 11.4°C | 21.6°C | 6.4°C | 239 mm | 83% | 1.4 m/s | 3.7 |
| 1988 | 15.6°C | 12.8°C | 10.1°C | 21.3°C | 6.7°C | 150 mm | 83% | 1.3 m/s | 3.8 |
| 1987 | 16.1°C | 13.2°C | 10.3°C | 18.8°C | 5.2°C | 149 mm | 83% | 1.2 m/s | 4.1 |
| 1986 | 17.4°C | 14.3°C | 11.2°C | 20.0°C | 6.7°C | 133 mm | 83% | 1.1 m/s | 4.2 |
| 1985 | 17.4°C | 14.2°C | 10.9°C | 20.3°C | 6.9°C | 58 mm | 79% | 1.1 m/s | 4.4 |
| 1984 | 17.6°C | 14.9°C | 12.1°C | 20.3°C | 7.6°C | 257 mm | 86% | 1.2 m/s | 3.7 |
| 1983 | 15.2°C | 12.5°C | 9.8°C | 19.4°C | 2.4°C | 149 mm | 85% | 1.2 m/s | — |
| 1982 | 17.5°C | 14.6°C | 11.7°C | 19.2°C | 7.0°C | 44 mm | 82% | 1.1 m/s | — |
| 1981 🌧️ | 17.7°C | 15.1°C | 12.5°C | 22.1°C | 8.0°C | 262 mm | 85% | 1.1 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 16.8°C with lows near 11.2°C (mean 14°C), based on 45 years of NASA POWER data.
March averages 145 mm of rainfall in Greymouth, one of the drier months. The wettest on record was 262 mm in 1981.
The hottest March reached 22.5°C in 2013. The coldest dipped to 2.4°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have held steady by about 0°C. Daytime highs moved from 17.1°C to 17.1°C and overnight lows from 11.4°C to 11.5°C over the same span.
March is one of the warmer months of the year in Greymouth and one of the drier months, so plan for around 16.8°C daytime highs and 11.2°C at night.
Not quite — March is the 10th coolest month in Greymouth, averaging 14°C.
For March in Greymouth, pack light layers you can adjust through the day, with typical highs of 16.8°C and lows of 11.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 84% — quite humid.
Average wind speed in March is 1.2 m/s. The windiest March on record averaged 1.4 m/s (1989).
The wettest March on record was 1981 with 262 mm. On average, March sees 145 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 Greymouth 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.
