April is one of the warmer months of the year in Timaru, with average highs near 15.2°C and lows around 9.8°C (mean 12.5°C). It is about average for rainfall, averaging 55 mm of rainfall and 77% relative humidity across the period.
April is one of the warmer months of the year in Timaru. Across 45 years of records, the warmest April in Timaru was 2016 — when the month averaged 13.9°C — while the coldest were 1992 and 1993 at 10.8°C. Typical April days reach 15.2°C with nights near 9.8°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Timaru, averaging 55 mm of rainfall. The wettest April on record was 2017 with 117 mm, while the driest was 2001 at 10 mm.
Relative humidity in Timaru during April averages 77%. The most humid April was 2014 at 84%, and the least humid was 2001 at 72%.
April receives about 2.8 kWh/m²/day of solar energy in Timaru. The sunniest April was 1986 at 3.4 kWh/m²/day, and the cloudiest was 2014 at 2.1.
Average wind speed in Timaru during April is 3.5 m/s. The windiest April was 2018 at 4.4 m/s, while the calmest was 2012 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.5°C | 12.0°C | 12.4°C | 12.7°C | 13.3°C | +0.8°C |
| Avg High | 15.3°C | 14.7°C | 15.1°C | 15.4°C | 16.2°C | +0.9°C |
| Avg Low | 9.6°C | 9.4°C | 9.7°C | 10.0°C | 10.5°C | +0.9°C |
| Avg Rain | 51 mm | 57 mm | 49 mm | 71 mm | 44 mm | -7 mm |
April temperatures in Timaru have risen by about 1°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 4.2°C (1997) to a record high of 22.6°C (2025).
Rainfall in April is about average for rainfall, averaging 55 mm, with a wettest year of 117 mm.
A good time to visit Timaru
April is a good time to visit Timaru, with days averaging 15.2°C and nights around 9.8°C (mean 12.5°C, close to Timaru's yearly average) and moderate 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 | 16.0°C | 13.5°C | 11.0°C | 22.6°C | 7.8°C | 88 mm | 81% | 4 m/s | 2.6 |
| 2024 | 15.8°C | 12.9°C | 10.0°C | 19.8°C | 7.4°C | 39 mm | 77% | 3.1 m/s | 2.7 |
| 2023 | 15.8°C | 13.3°C | 10.8°C | 20.3°C | 8.6°C | 48 mm | 80% | 3.4 m/s | 2.8 |
| 2022 | 16.4°C | 13.5°C | 10.6°C | 21.0°C | 8.5°C | 28 mm | 76% | 3.2 m/s | 3 |
| 2021 | 17.1°C | 13.8°C | 10.6°C | 21.3°C | 6.2°C | 25 mm | 73% | 3.4 m/s | 2.8 |
| 2020 | 16.0°C | 12.9°C | 9.7°C | 19.2°C | 6.3°C | 34 mm | 74% | 3.6 m/s | 2.8 |
| 2019 | 14.9°C | 12.3°C | 9.7°C | 21.5°C | 7.1°C | 54 mm | 77% | 3.4 m/s | 2.9 |
| 2018 | 15.2°C | 12.5°C | 9.8°C | 20.5°C | 6.9°C | 104 mm | 75% | 4.4 m/s | 2.7 |
| 2017 🌧️ | 14.7°C | 12.4°C | 10.2°C | 20.7°C | 6.0°C | 117 mm | 84% | 3.3 m/s | 2.4 |
| 2016 🔥 | 17.2°C | 13.9°C | 10.7°C | 20.8°C | 8.2°C | 33 mm | 74% | 3.1 m/s | 2.8 |
| 2015 | 15.2°C | 12.5°C | 9.8°C | 21.5°C | 4.6°C | 91 mm | 79% | 4.2 m/s | 2.6 |
| 2014 | 14.3°C | 12.3°C | 10.3°C | 18.7°C | 6.0°C | 110 mm | 84% | 3.9 m/s | 2.1 |
| 2013 | 15.4°C | 12.8°C | 10.2°C | 20.7°C | 7.6°C | 47 mm | 75% | 3.3 m/s | 2.6 |
| 2012 | 15.9°C | 12.9°C | 9.9°C | 19.6°C | 6.5°C | 23 mm | 78% | 2.9 m/s | 3.1 |
| 2011 | 14.4°C | 11.7°C | 8.9°C | 19.3°C | 5.7°C | 79 mm | 77% | 3.7 m/s | 2.8 |
| 2010 | 16.7°C | 13.5°C | 10.4°C | 20.9°C | 6.6°C | 49 mm | 75% | 3.5 m/s | 2.7 |
| 2009 | 15.0°C | 12.4°C | 9.8°C | 20.3°C | 6.0°C | 75 mm | 79% | 3.3 m/s | 2.8 |
| 2008 | 15.1°C | 12.5°C | 9.9°C | 20.0°C | 5.8°C | 28 mm | 77% | 3.4 m/s | 2.9 |
| 2007 | 14.3°C | 11.9°C | 9.5°C | 19.8°C | 6.0°C | 32 mm | 79% | 3.2 m/s | 2.9 |
| 2006 | 15.9°C | 13.5°C | 11.0°C | 19.7°C | 7.8°C | 88 mm | 80% | 3.2 m/s | 2.8 |
| 2005 | 14.8°C | 11.8°C | 8.9°C | 21.4°C | 5.5°C | 37 mm | 76% | 3.7 m/s | 3 |
| 2004 | 14.3°C | 11.5°C | 8.7°C | 20.4°C | 5.4°C | 25 mm | 78% | 3.4 m/s | 2.8 |
| 2003 | 14.0°C | 11.6°C | 9.1°C | 19.7°C | 5.7°C | 36 mm | 79% | 3.4 m/s | 2.8 |
| 2002 | 14.9°C | 12.4°C | 9.8°C | 20.7°C | 7.4°C | 75 mm | 80% | 3.6 m/s | 2.4 |
| 2001 | 16.9°C | 13.6°C | 10.3°C | 20.1°C | 7.7°C | 10 mm | 72% | 3.5 m/s | 3.1 |
| 2000 | 15.5°C | 12.5°C | 9.5°C | 19.9°C | 7.4°C | 82 mm | 77% | 3.5 m/s | 2.5 |
| 1999 | 15.0°C | 12.5°C | 9.9°C | 20.2°C | 5.1°C | 34 mm | 77% | 3.6 m/s | 2.6 |
| 1998 | 15.3°C | 12.5°C | 9.7°C | 20.4°C | 6.3°C | 25 mm | 75% | 3.7 m/s | 2.6 |
| 1997 | 14.4°C | 11.6°C | 8.8°C | 20.4°C | 4.2°C | 65 mm | 75% | 4 m/s | 2.5 |
| 1996 | 14.9°C | 12.6°C | 10.3°C | 18.9°C | 8.2°C | 86 mm | 80% | 3.5 m/s | 2.5 |
| 1995 | 14.8°C | 12.6°C | 10.5°C | 19.1°C | 5.7°C | 42 mm | 82% | 3.5 m/s | 2.7 |
| 1994 | 15.9°C | 12.8°C | 9.7°C | 19.4°C | 5.4°C | 39 mm | 76% | 3.4 m/s | 2.9 |
| 1993 | 13.3°C | 10.8°C | 8.3°C | 17.7°C | 5.8°C | 59 mm | 80% | 3.7 m/s | 2.7 |
| 1992 ❄️ | 13.5°C | 10.8°C | 8.1°C | 18.0°C | 5.2°C | 52 mm | 78% | 3.3 m/s | 2.8 |
| 1991 | 13.9°C | 11.3°C | 8.7°C | 20.3°C | 4.5°C | 108 mm | 78% | 3.9 m/s | 2.6 |
| 1990 | 15.7°C | 12.8°C | 9.8°C | 21.1°C | 5.0°C | 65 mm | 76% | 4 m/s | 2.8 |
| 1989 | 15.9°C | 12.9°C | 9.8°C | 20.3°C | 7.0°C | 52 mm | 74% | 3.4 m/s | 3 |
| 1988 | 14.4°C | 11.4°C | 8.5°C | 18.8°C | 5.2°C | 33 mm | 75% | 3.1 m/s | 3 |
| 1987 | 14.9°C | 12.1°C | 9.3°C | 20.9°C | 6.6°C | 50 mm | 76% | 3.8 m/s | 2.8 |
| 1986 | 16.6°C | 13.6°C | 10.6°C | 19.8°C | 8.5°C | 50 mm | 77% | 3.6 m/s | 3.4 |
| 1985 | 16.0°C | 13.2°C | 10.5°C | 20.1°C | 6.5°C | 47 mm | 77% | 3.4 m/s | 3.2 |
| 1984 | 15.4°C | 12.5°C | 9.6°C | 19.4°C | 5.8°C | 30 mm | 78% | 3.3 m/s | 2.9 |
| 1983 | 13.8°C | 11.2°C | 8.5°C | 19.2°C | 6.0°C | 105 mm | 80% | 3.5 m/s | — |
| 1982 | 14.1°C | 11.7°C | 9.3°C | 19.7°C | 7.1°C | 18 mm | 79% | 3.4 m/s | — |
| 1981 | 16.4°C | 13.5°C | 10.7°C | 20.2°C | 6.9°C | 74 mm | 78% | 3.1 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 15.2°C with lows near 9.8°C (mean 12.5°C), based on 45 years of NASA POWER data.
April averages 55 mm of rainfall in Timaru, about average for rainfall. The wettest on record was 117 mm in 2017.
The hottest April reached 22.6°C in 2025. The coldest dipped to 4.2°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1°C. Daytime highs moved from 15.1°C to 16.2°C and overnight lows from 9.7°C to 10.6°C over the same span.
April is one of the warmer months of the year in Timaru and about average for rainfall, so plan for around 15.2°C daytime highs and 9.8°C at night.
Not quite — April is the 7th coolest month in Timaru, averaging 12.5°C.
For April in Timaru, pack light layers you can adjust through the day, with typical highs of 15.2°C and lows of 9.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 77% — quite humid.
Average wind speed in April is 3.5 m/s. The windiest April on record averaged 4.4 m/s (2018).
The wettest April on record was 2017 with 117 mm. On average, April sees 55 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 Timaru 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.
