April is one of the warmer months of the year in New Plymouth, with average highs near 17.4°C and lows around 11.4°C (mean 14.4°C). It is about average for rainfall, averaging 104 mm of rainfall and 84% relative humidity across the period.
April is one of the warmer months of the year in New Plymouth. Across 45 years of records, the warmest April in New Plymouth was 2025 — when the month averaged 16.2°C — while the coldest was 1992 at 11.5°C. Typical April days reach 17.4°C with nights near 11.4°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in New Plymouth, averaging 104 mm of rainfall. The wettest April on record was 1991 with 285 mm, while the driest was 2005 at 38 mm.
Relative humidity in New Plymouth during April averages 84%. The most humid April was 1996 at 89%, and the least humid was 1982 at 79%.
April receives about 3.2 kWh/m²/day of solar energy in New Plymouth. The sunniest Aprils were 2016, 2020 and 2022, among others at 3.5 kWh/m²/day, and the cloudiest was 1996 at 2.6.
Average wind speed in New Plymouth during April is 3.8 m/s. The windiest April was 1991 at 4.5 m/s, while the calmest were 2002, 2007 and 2016 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.3°C | 14.0°C | 14.3°C | 14.8°C | 15.0°C | +0.7°C |
| Avg High | 17.5°C | 16.8°C | 17.3°C | 17.7°C | 17.9°C | +0.4°C |
| Avg Low | 10.9°C | 11.1°C | 11.3°C | 11.9°C | 12.0°C | +1.1°C |
| Avg Rain | 78 mm | 134 mm | 79 mm | 132 mm | 89 mm | +11 mm |
April temperatures in New Plymouth have risen by about 0.9°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 4°C (1992) to a record high of 22.7°C (1999).
Rainfall in April is about average for rainfall, averaging 104 mm, with a wettest year of 285 mm.
A good time to visit New Plymouth
April is a good time to visit New Plymouth, with days averaging 17.4°C and nights around 11.4°C (mean 14.4°C, warmer than New Plymouth'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 🔥 | 19.0°C | 16.2°C | 13.4°C | 22.0°C | 6.9°C | 121 mm | 85% | 4.1 m/s | 3 |
| 2024 | 17.3°C | 14.5°C | 11.6°C | 20.1°C | 7.0°C | 140 mm | 86% | 3.6 m/s | 3.2 |
| 2023 | 18.3°C | 15.2°C | 12.2°C | 20.9°C | 7.8°C | 88 mm | 87% | 3.9 m/s | 3.2 |
| 2022 | 18.5°C | 15.3°C | 12.0°C | 21.4°C | 8.2°C | 47 mm | 85% | 3.5 m/s | 3.5 |
| 2021 | 17.4°C | 14.6°C | 11.8°C | 20.8°C | 7.4°C | 70 mm | 86% | 3.6 m/s | 3.2 |
| 2020 | 17.1°C | 14.0°C | 10.9°C | 20.0°C | 8.3°C | 70 mm | 85% | 3.6 m/s | 3.5 |
| 2019 | 17.1°C | 14.0°C | 10.9°C | 20.6°C | 7.5°C | 213 mm | 85% | 4.1 m/s | 3.3 |
| 2018 | 17.4°C | 14.7°C | 12.0°C | 20.2°C | 6.8°C | 89 mm | 84% | 4.3 m/s | 3 |
| 2017 | 18.1°C | 15.1°C | 12.2°C | 21.6°C | 6.4°C | 230 mm | 87% | 3.3 m/s | 3 |
| 2016 | 18.2°C | 15.3°C | 12.3°C | 21.7°C | 6.9°C | 59 mm | 81% | 3.2 m/s | 3.5 |
| 2015 | 17.8°C | 15.0°C | 12.2°C | 20.7°C | 7.1°C | 197 mm | 84% | 3.9 m/s | 3 |
| 2014 | 18.3°C | 15.7°C | 13.1°C | 22.6°C | 8.8°C | 184 mm | 85% | 3.9 m/s | 2.9 |
| 2013 | 18.1°C | 15.5°C | 13.0°C | 20.6°C | 6.7°C | 119 mm | 83% | 4 m/s | 3.1 |
| 2012 | 17.7°C | 14.3°C | 11.0°C | 21.4°C | 7.4°C | 60 mm | 84% | 3.6 m/s | 3.5 |
| 2011 | 16.8°C | 13.9°C | 10.9°C | 19.5°C | 6.4°C | 125 mm | 84% | 4.2 m/s | 3.1 |
| 2010 | 17.4°C | 14.4°C | 11.5°C | 19.3°C | 7.5°C | 44 mm | 83% | 3.7 m/s | 3.3 |
| 2009 | 17.3°C | 14.0°C | 10.7°C | 19.5°C | 6.4°C | 55 mm | 82% | 3.9 m/s | 3.3 |
| 2008 | 17.9°C | 15.2°C | 12.4°C | 19.9°C | 5.9°C | 174 mm | 82% | 4.1 m/s | 3.1 |
| 2007 | 16.7°C | 13.7°C | 10.7°C | 19.4°C | 6.0°C | 59 mm | 84% | 3.2 m/s | 3.4 |
| 2006 | 18.1°C | 15.6°C | 13.2°C | 20.3°C | 9.6°C | 125 mm | 85% | 4.4 m/s | 3.1 |
| 2005 | 16.9°C | 13.5°C | 10.1°C | 19.7°C | 6.1°C | 38 mm | 84% | 3.7 m/s | 3.3 |
| 2004 | 15.9°C | 13.1°C | 10.4°C | 19.9°C | 6.6°C | 56 mm | 87% | 3.5 m/s | 2.9 |
| 2003 | 18.0°C | 14.5°C | 11.1°C | 21.6°C | 7.0°C | 53 mm | 81% | 3.3 m/s | 3.3 |
| 2002 | 17.5°C | 14.3°C | 11.1°C | 21.0°C | 6.7°C | 40 mm | 83% | 3.2 m/s | 3.1 |
| 2001 | 17.7°C | 14.4°C | 11.1°C | 20.2°C | 7.1°C | 72 mm | 82% | 3.6 m/s | 3.3 |
| 2000 | 17.4°C | 14.9°C | 12.3°C | 20.1°C | 7.8°C | 122 mm | 85% | 3.8 m/s | 2.8 |
| 1999 | 18.3°C | 14.9°C | 11.5°C | 22.7°C | 7.4°C | 47 mm | 81% | 3.8 m/s | 3.2 |
| 1998 | 18.3°C | 14.9°C | 11.6°C | 21.0°C | 7.9°C | 57 mm | 84% | 3.5 m/s | 3.1 |
| 1997 | 16.1°C | 13.2°C | 10.3°C | 19.8°C | 6.8°C | 95 mm | 85% | 4.1 m/s | 3.2 |
| 1996 | 17.2°C | 14.8°C | 12.5°C | 20.3°C | 6.4°C | 213 mm | 89% | 4 m/s | 2.6 |
| 1995 | 18.5°C | 16.0°C | 13.4°C | 22.4°C | 7.0°C | 226 mm | 87% | 3.6 m/s | 3.1 |
| 1994 | 16.9°C | 13.8°C | 10.7°C | 20.1°C | 4.8°C | 105 mm | 88% | 3.4 m/s | 3.2 |
| 1993 | 15.6°C | 12.9°C | 10.1°C | 19.2°C | 6.6°C | 107 mm | 85% | 3.8 m/s | 3.1 |
| 1992 ❄️ | 14.5°C | 11.5°C | 8.5°C | 16.9°C | 4.0°C | 82 mm | 87% | 3.5 m/s | 3.2 |
| 1991 🌧️ | 15.3°C | 12.9°C | 10.4°C | 20.4°C | 6.5°C | 285 mm | 85% | 4.5 m/s | 3.1 |
| 1990 | 17.6°C | 14.7°C | 11.7°C | 20.9°C | 6.4°C | 119 mm | 86% | 4.1 m/s | 3.1 |
| 1989 | 17.8°C | 14.7°C | 11.5°C | 20.8°C | 7.5°C | 56 mm | 82% | 3.9 m/s | 3.5 |
| 1988 | 17.2°C | 13.5°C | 9.7°C | 20.1°C | 6.1°C | 42 mm | 82% | 3.5 m/s | 3.5 |
| 1987 | 16.9°C | 13.6°C | 10.3°C | 19.9°C | 6.4°C | 106 mm | 84% | 4.2 m/s | 3.4 |
| 1986 | 17.8°C | 14.9°C | 11.9°C | 19.8°C | 8.5°C | 56 mm | 85% | 4 m/s | 3.5 |
| 1985 | 17.9°C | 14.3°C | 10.6°C | 21.1°C | 6.6°C | 75 mm | 80% | 3.7 m/s | 3.4 |
| 1984 | 17.5°C | 14.3°C | 11.0°C | 20.9°C | 7.4°C | 69 mm | 83% | 3.6 m/s | 3.3 |
| 1983 | 17.1°C | 14.0°C | 10.8°C | 20.4°C | 4.2°C | 134 mm | 84% | 4.1 m/s | — |
| 1982 | 17.0°C | 13.5°C | 9.9°C | 20.1°C | 7.2°C | 52 mm | 79% | 3.6 m/s | — |
| 1981 | 18.4°C | 15.6°C | 12.8°C | 21.5°C | 9.5°C | 116 mm | 85% | 4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 17.4°C with lows near 11.4°C (mean 14.4°C), based on 45 years of NASA POWER data.
April averages 104 mm of rainfall in New Plymouth, about average for rainfall. The wettest on record was 285 mm in 1991.
The hottest April reached 22.7°C in 1999. The coldest dipped to 4°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.9°C. Daytime highs moved from 17.6°C to 18.1°C and overnight lows from 11°C to 12.2°C over the same span.
April is one of the warmer months of the year in New Plymouth and about average for rainfall, so plan for around 17.4°C daytime highs and 11.4°C at night.
Not quite — April is the 8th coolest month in New Plymouth, averaging 14.4°C.
For April in New Plymouth, pack light layers you can adjust through the day, with typical highs of 17.4°C and lows of 11.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 84% — quite humid.
Average wind speed in April is 3.8 m/s. The windiest April on record averaged 4.5 m/s (1991).
The wettest April on record was 1991 with 285 mm. On average, April sees 104 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 New Plymouth 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.
