October is one of the cooler months of the year in Greymouth, with average highs near 12.9°C and lows around 7.6°C (mean 10.3°C). It is a relatively wet time of year, averaging 194 mm of rainfall and 84% relative humidity across the period.
October is one of the cooler months of the year in Greymouth. Across 45 years of records, the warmest October in Greymouth was 2001 — when the month averaged 11.8°C — while the coldest was 1982 at 8.7°C. Typical October days reach 12.9°C with nights near 7.6°C. The long-term October temperature trend is broadly flat.
October is a relatively wet time of year in Greymouth, averaging 194 mm of rainfall. The wettest October on record was 1996 with 344 mm, while the driest was 1985 at 82 mm.
Relative humidity in Greymouth during October averages 84%. The most humid October was 1988 at 90%, and the least humid was 1985 at 79%.
October receives about 4.3 kWh/m²/day of solar energy in Greymouth. The sunniest October was 1985 at 5.1 kWh/m²/day, and the cloudiest were 1988 and 2013 at 3.3.
Average wind speed in Greymouth during October is 1.4 m/s. The windiest October was 1988 at 1.8 m/s, while the calmest was 2018 at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.3°C | 10.2°C | 9.9°C | 10.3°C | 10.8°C | +0.5°C |
| Avg High | 13.1°C | 12.8°C | 12.7°C | 12.9°C | 13.3°C | +0.2°C |
| Avg Low | 7.6°C | 7.6°C | 7.2°C | 7.6°C | 8.1°C | +0.5°C |
| Avg Rain | 183 mm | 200 mm | 178 mm | 187 mm | 239 mm | +56 mm |
October temperatures in Greymouth have risen by about 0.6°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 1.5°C (1990) to a record high of 18.3°C (2012).
Rainfall in October is a relatively wet time of year, averaging 194 mm, with a wettest year of 344 mm.
A good time to visit Greymouth
October is a good time to visit Greymouth, with days averaging 12.9°C and nights around 7.6°C (mean 10.3°C, close to Greymouth's yearly average) and higher rainfall. February and January are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 12.5°C | 10.3°C | 8.1°C | 16.1°C | 3.2°C | 343 mm | 87% | 1.6 m/s | 3.8 |
| 2024 | 13.3°C | 10.8°C | 8.3°C | 16.0°C | 5.0°C | 294 mm | 87% | 1.2 m/s | 4 |
| 2023 | 13.3°C | 10.6°C | 7.9°C | 17.8°C | 3.2°C | 161 mm | 83% | 1.3 m/s | 4.8 |
| 2022 | 13.5°C | 10.6°C | 7.6°C | 16.5°C | 1.7°C | 186 mm | 83% | 1.3 m/s | 4.5 |
| 2021 | 14.0°C | 11.4°C | 8.8°C | 17.2°C | 3.9°C | 207 mm | 85% | 1.2 m/s | 4.4 |
| 2020 | 13.4°C | 10.8°C | 8.1°C | 16.1°C | 2.0°C | 243 mm | 86% | 1.3 m/s | 4.1 |
| 2019 | 12.6°C | 10.0°C | 7.5°C | 15.8°C | 3.3°C | 223 mm | 85% | 1.4 m/s | 4.2 |
| 2018 | 13.3°C | 10.7°C | 8.0°C | 17.7°C | 1.7°C | 132 mm | 85% | 1 m/s | 4.4 |
| 2017 | 13.7°C | 11.2°C | 8.8°C | 17.9°C | 6.5°C | 158 mm | 86% | 1.3 m/s | 4.2 |
| 2016 | 13.3°C | 10.6°C | 7.8°C | 15.7°C | 4.5°C | 199 mm | 84% | 1.3 m/s | 4.5 |
| 2015 | 12.5°C | 10.2°C | 7.9°C | 15.0°C | 5.0°C | 189 mm | 85% | 1.4 m/s | 4.4 |
| 2014 | 12.8°C | 10.0°C | 7.3°C | 15.9°C | 3.7°C | 155 mm | 85% | 1.4 m/s | 4.3 |
| 2013 | 12.3°C | 10.1°C | 7.8°C | 16.2°C | 3.1°C | 284 mm | 88% | 1.5 m/s | 3.3 |
| 2012 | 11.8°C | 9.3°C | 6.8°C | 18.3°C | 3.2°C | 274 mm | 85% | 1.6 m/s | 3.8 |
| 2011 | 13.3°C | 10.4°C | 7.5°C | 16.9°C | 3.9°C | 149 mm | 84% | 1.2 m/s | 4.2 |
| 2010 | 13.3°C | 10.2°C | 7.0°C | 16.9°C | 3.3°C | 103 mm | 82% | 1.2 m/s | 4.9 |
| 2009 | 12.0°C | 9.0°C | 6.0°C | 15.3°C | 2.2°C | 140 mm | 81% | 1.2 m/s | 4.7 |
| 2008 | 12.5°C | 9.7°C | 7.0°C | 15.6°C | 4.9°C | 135 mm | 84% | 1.3 m/s | 4.3 |
| 2007 | 11.7°C | 9.2°C | 6.7°C | 15.6°C | 2.0°C | 283 mm | 84% | 1.7 m/s | 3.8 |
| 2006 | 12.5°C | 9.6°C | 6.6°C | 15.3°C | 3.3°C | 196 mm | 82% | 1.5 m/s | 4 |
| 2005 | 13.5°C | 10.7°C | 7.9°C | 16.7°C | 4.1°C | 167 mm | 83% | 1.2 m/s | 4.9 |
| 2004 | 12.3°C | 9.9°C | 7.4°C | 14.4°C | 3.2°C | 165 mm | 85% | 1.3 m/s | 3.9 |
| 2003 | 12.8°C | 10.0°C | 7.2°C | 15.9°C | 2.0°C | 157 mm | 83% | 1.3 m/s | 4.2 |
| 2002 | 11.7°C | 8.9°C | 6.1°C | 14.8°C | 1.8°C | 221 mm | 83% | 1.4 m/s | 4.4 |
| 2001 🔥 | 14.5°C | 11.8°C | 9.0°C | 17.2°C | 4.4°C | 167 mm | 85% | 1.2 m/s | 4.4 |
| 2000 | 13.2°C | 10.5°C | 7.7°C | 17.5°C | 2.4°C | 151 mm | 85% | 1.6 m/s | 4.4 |
| 1999 | 14.0°C | 11.6°C | 9.2°C | 16.5°C | 3.7°C | 202 mm | 87% | 1.4 m/s | 4.3 |
| 1998 | 12.4°C | 10.3°C | 8.2°C | 16.7°C | 4.6°C | 260 mm | 88% | 1.7 m/s | 3.9 |
| 1997 | 12.4°C | 10.1°C | 7.8°C | 15.4°C | 3.8°C | 117 mm | 86% | 1.4 m/s | 4.5 |
| 1996 🌧️ | 12.8°C | 10.5°C | 8.2°C | 14.9°C | 4.1°C | 344 mm | 86% | 1.4 m/s | 4.1 |
| 1995 | 12.6°C | 9.8°C | 7.0°C | 16.1°C | 2.4°C | 214 mm | 83% | 1.3 m/s | 4.5 |
| 1994 | 12.2°C | 9.3°C | 6.5°C | 16.7°C | 2.2°C | 133 mm | 83% | 1.3 m/s | 4.6 |
| 1993 | 12.8°C | 10.2°C | 7.7°C | 18.1°C | 3.7°C | 227 mm | 85% | 1.5 m/s | 4.2 |
| 1992 | 12.8°C | 9.9°C | 7.1°C | 16.8°C | 3.5°C | 156 mm | 81% | 1.3 m/s | 4.2 |
| 1991 | 12.5°C | 9.7°C | 6.9°C | 17.7°C | 2.8°C | 133 mm | 83% | 1.3 m/s | 4.6 |
| 1990 | 13.4°C | 10.6°C | 7.7°C | 16.4°C | 1.5°C | 211 mm | 83% | 1.2 m/s | 4.8 |
| 1989 | 13.6°C | 11.1°C | 8.6°C | 17.1°C | 5.2°C | 193 mm | 85% | 1.5 m/s | 4.3 |
| 1988 | 12.0°C | 10.0°C | 8.0°C | 14.4°C | 5.8°C | 299 mm | 90% | 1.8 m/s | 3.3 |
| 1987 | 13.2°C | 10.4°C | 7.7°C | 17.1°C | 3.3°C | 207 mm | 85% | 1.3 m/s | 4.4 |
| 1986 | 13.7°C | 11.1°C | 8.4°C | 15.8°C | 5.6°C | 195 mm | 85% | 1.2 m/s | 4.1 |
| 1985 | 13.6°C | 10.0°C | 6.5°C | 16.6°C | 2.8°C | 82 mm | 79% | 1.2 m/s | 5.1 |
| 1984 | 12.7°C | 9.9°C | 7.0°C | 15.9°C | 2.7°C | 177 mm | 84% | 1.4 m/s | 4.1 |
| 1983 | 14.0°C | 11.1°C | 8.1°C | 18.0°C | 3.1°C | 159 mm | 83% | 1.2 m/s | — |
| 1982 ❄️ | 11.7°C | 8.7°C | 5.7°C | 14.4°C | 2.8°C | 145 mm | 82% | 1.4 m/s | — |
| 1981 | 13.6°C | 10.8°C | 8.0°C | 16.8°C | 4.5°C | 190 mm | 83% | 1.3 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 12.9°C with lows near 7.6°C (mean 10.3°C), based on 45 years of NASA POWER data.
October averages 194 mm of rainfall in Greymouth, a relatively wet time of year. The wettest on record was 344 mm in 1996.
The hottest October reached 18.3°C in 2012. The coldest dipped to 1.5°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.6°C. Daytime highs moved from 13.1°C to 13.3°C and overnight lows from 7.1°C to 8.1°C over the same span.
October is one of the cooler months of the year in Greymouth and a relatively wet time of year, so plan for around 12.9°C daytime highs and 7.6°C at night.
Not quite — October is the 6th coolest month in Greymouth, averaging 10.3°C.
For October in Greymouth, pack warm layers and a jacket for chilly mornings, with typical highs of 12.9°C and lows of 7.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 84% — quite humid.
Average wind speed in October is 1.4 m/s. The windiest October on record averaged 1.8 m/s (1988).
The wettest October on record was 1996 with 344 mm. On average, October sees 194 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 October, 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 October specifically, along with year-by-year records and how the month has changed over the decades.
