April is one of the warmer months of the year in Greymouth, with average highs near 14.6°C and lows around 9.5°C (mean 12.1°C). It is about average for rainfall, averaging 166 mm of rainfall and 86% relative humidity across the period.
April is one of the warmer months of the year in Greymouth. Across 45 years of records, the warmest April in Greymouth was 2022 — when the month averaged 13.7°C — while the coldest was 1992 at 10.2°C. Typical April days reach 14.6°C with nights near 9.5°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Greymouth, averaging 166 mm of rainfall. The wettest April on record was 1996 with 368 mm, while the driest was 2001 at 52 mm.
Relative humidity in Greymouth during April averages 86%. The most humid April was 2006 at 90%, and the least humid was 1982 at 77%.
April receives about 2.7 kWh/m²/day of solar energy in Greymouth. The sunniest April was 2019 at 3.2 kWh/m²/day, and the cloudiest was 2014 at 2.2.
Average wind speed in Greymouth during April is 1.2 m/s. The windiest April was 2018 at 1.5 m/s, while the calmest were 1992 and 2002 at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.0°C | 11.6°C | 11.9°C | 12.3°C | 12.8°C | +0.8°C |
| Avg High | 14.8°C | 14.2°C | 14.4°C | 14.8°C | 15.1°C | +0.3°C |
| Avg Low | 9.2°C | 9.1°C | 9.3°C | 9.8°C | 10.4°C | +1.2°C |
| Avg Rain | 142 mm | 176 mm | 132 mm | 190 mm | 199 mm | +57 mm |
April temperatures in Greymouth have risen by about 0.7°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 2.1°C (1990) to a record high of 19.9°C (1985).
Rainfall in April is about average for rainfall, averaging 166 mm, with a wettest year of 368 mm.
A good time to visit Greymouth
April is a good time to visit Greymouth, with days averaging 14.6°C and nights around 9.5°C (mean 12.1°C, close to Greymouth's yearly average) and higher rainfall. February and January are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 15.7°C | 13.4°C | 11.1°C | 19.6°C | 7.9°C | 292 mm | 88% | 1.3 m/s | 2.4 |
| 2024 | 14.6°C | 12.3°C | 10.1°C | 17.8°C | 6.3°C | 156 mm | 89% | 1.2 m/s | 2.7 |
| 2023 | 15.4°C | 12.8°C | 10.2°C | 17.3°C | 7.3°C | 264 mm | 87% | 1.3 m/s | 2.7 |
| 2022 🔥 | 16.1°C | 13.7°C | 11.3°C | 18.5°C | 7.4°C | 116 mm | 85% | 1.2 m/s | 3 |
| 2021 | 14.7°C | 12.5°C | 10.2°C | 18.0°C | 4.8°C | 182 mm | 88% | 1.3 m/s | 2.5 |
| 2020 | 14.1°C | 11.8°C | 9.5°C | 17.5°C | 6.6°C | 185 mm | 88% | 1.3 m/s | 2.8 |
| 2019 | 15.1°C | 12.1°C | 9.1°C | 17.9°C | 5.1°C | 194 mm | 83% | 1.2 m/s | 3.2 |
| 2018 | 13.8°C | 11.6°C | 9.3°C | 17.9°C | 4.0°C | 274 mm | 86% | 1.5 m/s | 2.3 |
| 2017 | 15.1°C | 12.5°C | 9.9°C | 17.3°C | 5.2°C | 227 mm | 87% | 1.2 m/s | 2.7 |
| 2016 | 15.5°C | 13.0°C | 10.4°C | 18.1°C | 7.5°C | 132 mm | 86% | 1.2 m/s | 2.9 |
| 2015 | 14.9°C | 12.5°C | 10.1°C | 19.0°C | 3.4°C | 263 mm | 87% | 1.3 m/s | 2.4 |
| 2014 | 14.8°C | 12.5°C | 10.2°C | 18.3°C | 4.9°C | 186 mm | 87% | 1.3 m/s | 2.2 |
| 2013 | 14.4°C | 12.2°C | 10.0°C | 17.4°C | 6.1°C | 187 mm | 85% | 1.3 m/s | 2.4 |
| 2012 | 15.3°C | 12.5°C | 9.7°C | 17.8°C | 6.3°C | 108 mm | 85% | 1.2 m/s | 2.9 |
| 2011 | 14.1°C | 11.5°C | 8.9°C | 18.1°C | 3.9°C | 181 mm | 84% | 1.2 m/s | 2.7 |
| 2010 | 14.7°C | 12.5°C | 10.2°C | 16.5°C | 5.3°C | 150 mm | 89% | 1.4 m/s | 2.4 |
| 2009 | 14.3°C | 12.0°C | 9.6°C | 16.9°C | 4.5°C | 193 mm | 87% | 1.2 m/s | 2.5 |
| 2008 | 15.3°C | 12.5°C | 9.7°C | 17.8°C | 2.9°C | 143 mm | 84% | 1.2 m/s | 2.9 |
| 2007 | 13.7°C | 11.4°C | 9.2°C | 15.8°C | 4.9°C | 84 mm | 87% | 1.1 m/s | 2.8 |
| 2006 | 14.9°C | 12.8°C | 10.7°C | 18.2°C | 7.4°C | 326 mm | 90% | 1.4 m/s | 2.3 |
| 2005 | 13.7°C | 11.1°C | 8.6°C | 17.0°C | 2.6°C | 79 mm | 86% | 1.2 m/s | 2.9 |
| 2004 | 13.6°C | 10.9°C | 8.3°C | 18.3°C | 3.7°C | 85 mm | 87% | 1.1 m/s | 2.6 |
| 2003 | 14.3°C | 11.4°C | 8.5°C | 16.9°C | 4.8°C | 59 mm | 83% | 1.2 m/s | 2.8 |
| 2002 | 14.8°C | 12.1°C | 9.5°C | 18.6°C | 4.4°C | 71 mm | 86% | 1 m/s | 2.8 |
| 2001 | 15.0°C | 12.3°C | 9.6°C | 18.4°C | 6.7°C | 52 mm | 85% | 1.2 m/s | 2.8 |
| 2000 | 14.6°C | 12.2°C | 9.7°C | 16.8°C | 6.1°C | 226 mm | 87% | 1.2 m/s | 2.5 |
| 1999 | 15.1°C | 12.5°C | 9.9°C | 18.3°C | 5.3°C | 140 mm | 84% | 1.4 m/s | 2.9 |
| 1998 | 14.2°C | 11.6°C | 9.1°C | 17.5°C | 6.0°C | 112 mm | 87% | 1.3 m/s | 2.7 |
| 1997 | 13.7°C | 11.2°C | 8.7°C | 18.7°C | 3.2°C | 142 mm | 86% | 1.4 m/s | 2.5 |
| 1996 🌧️ | 14.3°C | 12.1°C | 10.0°C | 16.9°C | 6.4°C | 368 mm | 88% | 1.3 m/s | 2.3 |
| 1995 | 15.3°C | 13.0°C | 10.6°C | 19.4°C | 4.2°C | 223 mm | 85% | 1.3 m/s | 2.8 |
| 1994 | 14.6°C | 12.2°C | 9.8°C | 17.3°C | 4.2°C | 124 mm | 87% | 1.3 m/s | 2.7 |
| 1993 | 13.2°C | 10.4°C | 7.6°C | 15.8°C | 3.5°C | 133 mm | 83% | 1.2 m/s | 2.9 |
| 1992 ❄️ | 13.1°C | 10.2°C | 7.3°C | 15.6°C | 3.1°C | 79 mm | 85% | 1 m/s | 2.8 |
| 1991 | 13.2°C | 10.6°C | 8.1°C | 17.6°C | 4.5°C | 196 mm | 86% | 1.3 m/s | 2.7 |
| 1990 | 14.8°C | 12.2°C | 9.7°C | 17.6°C | 2.1°C | 239 mm | 88% | 1.4 m/s | 2.5 |
| 1989 | 14.8°C | 12.1°C | 9.5°C | 18.1°C | 4.4°C | 126 mm | 85% | 1.4 m/s | 2.9 |
| 1988 | 14.1°C | 11.0°C | 7.9°C | 16.1°C | 3.9°C | 54 mm | 83% | 1.1 m/s | 3.1 |
| 1987 | 14.3°C | 11.4°C | 8.6°C | 17.1°C | 4.3°C | 179 mm | 86% | 1.3 m/s | 2.8 |
| 1986 | 15.2°C | 12.7°C | 10.2°C | 17.4°C | 6.5°C | 198 mm | 88% | 1.3 m/s | 3 |
| 1985 | 15.9°C | 12.8°C | 9.8°C | 19.9°C | 5.3°C | 119 mm | 81% | 1.2 m/s | 3 |
| 1984 | 14.8°C | 12.1°C | 9.5°C | 17.6°C | 5.9°C | 110 mm | 85% | 1.3 m/s | 2.8 |
| 1983 | 13.7°C | 11.1°C | 8.5°C | 16.2°C | 3.9°C | 211 mm | 87% | 1.2 m/s | — |
| 1982 | 14.9°C | 11.7°C | 8.5°C | 19.4°C | 5.4°C | 53 mm | 77% | 1.1 m/s | — |
| 1981 | 15.5°C | 13.1°C | 10.7°C | 19.2°C | 7.7°C | 230 mm | 88% | 1.2 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 14.6°C with lows near 9.5°C (mean 12.1°C), based on 45 years of NASA POWER data.
April averages 166 mm of rainfall in Greymouth, about average for rainfall. The wettest on record was 368 mm in 1996.
The hottest April reached 19.9°C in 1985. The coldest dipped to 2.1°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.7°C. Daytime highs moved from 15°C to 15.3°C and overnight lows from 9.4°C to 10.6°C over the same span.
April is one of the warmer months of the year in Greymouth and about average for rainfall, so plan for around 14.6°C daytime highs and 9.5°C at night.
Not quite — April is the 8th coolest month in Greymouth, averaging 12.1°C.
For April in Greymouth, pack light layers you can adjust through the day, with typical highs of 14.6°C and lows of 9.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 86% — quite humid.
Average wind speed in April is 1.2 m/s. The windiest April on record averaged 1.5 m/s (2018).
The wettest April on record was 1996 with 368 mm. On average, April sees 166 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 April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
