April is one of the warmer months of the year in Grafton, with average highs near 23.9°C and lows around 17.8°C (mean 20.9°C). It is a relatively wet time of year, averaging 123 mm of rainfall and 75% relative humidity across the period.
April is one of the warmer months of the year in Grafton. Across 45 years of records, the warmest April in Grafton was 2016 — when the month averaged 22.8°C — while the coldest was 2021 at 19.1°C. Typical April days reach 23.9°C with nights near 17.8°C. The long-term trend is warming, about 0.2°C per decade.
April is a relatively wet time of year in Grafton, averaging 123 mm of rainfall. The wettest April on record was 1988 with 533 mm, while the driest was 1994 at 30 mm.
Relative humidity in Grafton during April averages 75%. The most humid April was 1988 at 85%, and the least humid was 1991 at 64%.
April receives about 4.2 kWh/m²/day of solar energy in Grafton. The sunniest Aprils were 1991, 1997 and 2006 at 4.8 kWh/m²/day, and the cloudiest was 1988 at 3.2.
Average wind speed in Grafton during April is 2.6 m/s. The windiest April was 2008 at 3.2 m/s, while the calmest were 2013 and 2020 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.5°C | 20.7°C | 21.0°C | 21.2°C | 20.8°C | +0.3°C |
| Avg High | 23.4°C | 24.0°C | 24.1°C | 24.3°C | 23.7°C | +0.3°C |
| Avg Low | 17.5°C | 17.5°C | 18.0°C | 18.1°C | 17.8°C | +0.3°C |
| Avg Rain | 218 mm | 108 mm | 97 mm | 94 mm | 101 mm | -116 mm |
April temperatures in Grafton have risen by about 0.8°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 9.3°C (1994) to a record high of 32.8°C (1986).
Rainfall in April is a relatively wet time of year, averaging 123 mm, with a wettest year of 533 mm.
One of the best times to visit Grafton
April is one of the best times to visit Grafton. Expect days averaging 23.9°C and nights around 17.8°C (mean 20.9°C) — close to Grafton's yearly average — with higher rainfall (123 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 | 23.8°C | 21.2°C | 18.6°C | 26.6°C | 15.8°C | 143 mm | 80% | 2.8 m/s | 4.1 |
| 2024 | 24.4°C | 21.6°C | 18.8°C | 28.8°C | 15.5°C | 168 mm | 78% | 2.4 m/s | 4.2 |
| 2023 | 24.7°C | 21.4°C | 18.1°C | 29.0°C | 14.2°C | 56 mm | 68% | 3.1 m/s | 4.2 |
| 2022 | 23.2°C | 20.8°C | 18.4°C | 25.7°C | 16.0°C | 87 mm | 81% | 2.6 m/s | 3.9 |
| 2021 ❄️ | 22.3°C | 19.1°C | 15.9°C | 27.2°C | 10.9°C | 92 mm | 78% | 2.4 m/s | 4.3 |
| 2020 | 24.0°C | 20.7°C | 17.3°C | 28.0°C | 14.4°C | 61 mm | 77% | 2.1 m/s | 4.5 |
| 2019 | 24.8°C | 21.9°C | 19.0°C | 30.2°C | 16.6°C | 75 mm | 73% | 2.7 m/s | 4.1 |
| 2018 | 25.4°C | 22.2°C | 19.0°C | 30.3°C | 16.1°C | 76 mm | 73% | 2.8 m/s | 4.5 |
| 2017 | 22.3°C | 19.5°C | 16.8°C | 23.9°C | 11.6°C | 44 mm | 78% | 2.8 m/s | 4.3 |
| 2016 🔥 | 26.1°C | 22.8°C | 19.6°C | 30.8°C | 17.4°C | 32 mm | 71% | 2.6 m/s | 4.3 |
| 2015 | 23.9°C | 20.5°C | 17.0°C | 26.7°C | 12.3°C | 113 mm | 74% | 2.3 m/s | 4.3 |
| 2014 | 25.0°C | 21.6°C | 18.3°C | 28.7°C | 14.3°C | 72 mm | 74% | 2.3 m/s | 4.3 |
| 2013 | 23.0°C | 20.1°C | 17.2°C | 25.2°C | 13.5°C | 130 mm | 78% | 2.1 m/s | 4.4 |
| 2012 | 23.1°C | 20.4°C | 17.7°C | 28.2°C | 12.0°C | 148 mm | 79% | 2.5 m/s | 4.2 |
| 2011 | 23.8°C | 20.9°C | 18.0°C | 27.2°C | 14.3°C | 187 mm | 74% | 2.8 m/s | 4 |
| 2010 | 25.3°C | 22.0°C | 18.7°C | 30.3°C | 15.9°C | 60 mm | 72% | 2.6 m/s | 4.3 |
| 2009 | 23.2°C | 20.6°C | 18.0°C | 25.9°C | 12.8°C | 184 mm | 80% | 3 m/s | 4.1 |
| 2008 | 22.1°C | 19.4°C | 16.6°C | 28.1°C | 9.5°C | 167 mm | 76% | 3.2 m/s | 4.3 |
| 2007 | 25.0°C | 21.5°C | 17.9°C | 28.6°C | 14.2°C | 67 mm | 70% | 2.8 m/s | 4.3 |
| 2006 | 24.6°C | 20.7°C | 16.8°C | 29.2°C | 13.4°C | 31 mm | 72% | 2.4 m/s | 4.8 |
| 2005 | 25.5°C | 22.2°C | 18.9°C | 29.8°C | 16.4°C | 57 mm | 71% | 2.5 m/s | 4.5 |
| 2004 | 25.1°C | 21.9°C | 18.7°C | 29.2°C | 14.2°C | 88 mm | 74% | 2.2 m/s | 4.5 |
| 2003 | 22.7°C | 20.1°C | 17.5°C | 26.7°C | 15.0°C | 125 mm | 79% | 3.1 m/s | 4 |
| 2002 | 25.0°C | 21.8°C | 18.7°C | 28.4°C | 17.2°C | 74 mm | 72% | 2.3 m/s | 4.4 |
| 2001 | 23.3°C | 20.5°C | 17.8°C | 24.9°C | 12.9°C | 76 mm | 79% | 2.4 m/s | 4.2 |
| 2000 | 24.5°C | 21.6°C | 18.7°C | 30.1°C | 15.2°C | 104 mm | 74% | 3.1 m/s | 4 |
| 1999 | 22.6°C | 19.8°C | 16.9°C | 25.6°C | 10.6°C | 158 mm | 77% | 3.1 m/s | 4.3 |
| 1998 | 25.4°C | 22.3°C | 19.2°C | 30.6°C | 13.9°C | 154 mm | 74% | 2.5 m/s | 3.9 |
| 1997 | 25.0°C | 21.2°C | 17.4°C | 29.9°C | 15.1°C | 35 mm | 68% | 2.5 m/s | 4.8 |
| 1996 | 25.3°C | 21.4°C | 17.4°C | 30.4°C | 12.4°C | 52 mm | 66% | 2.3 m/s | 4.4 |
| 1995 | 23.8°C | 20.2°C | 16.6°C | 28.3°C | 11.5°C | 68 mm | 70% | 2.4 m/s | 4.7 |
| 1994 | 22.9°C | 19.8°C | 16.8°C | 27.1°C | 9.3°C | 30 mm | 75% | 2.5 m/s | 4.5 |
| 1993 | 24.3°C | 21.0°C | 17.7°C | 31.4°C | 14.8°C | 89 mm | 71% | 2.7 m/s | 4.5 |
| 1992 | 22.3°C | 20.1°C | 17.9°C | 25.3°C | 14.3°C | 133 mm | 80% | 2.6 m/s | 3.8 |
| 1991 | 25.1°C | 21.1°C | 17.0°C | 30.9°C | 13.8°C | 45 mm | 64% | 2.7 m/s | 4.8 |
| 1990 | 22.8°C | 20.3°C | 17.9°C | 25.8°C | 11.2°C | 312 mm | 83% | 2.5 m/s | 3.5 |
| 1989 | 23.2°C | 21.2°C | 19.1°C | 25.5°C | 15.9°C | 398 mm | 83% | 3 m/s | 3.6 |
| 1988 🌧️ | 22.4°C | 20.3°C | 18.3°C | 25.9°C | 16.1°C | 533 mm | 85% | 3.1 m/s | 3.2 |
| 1987 | 23.6°C | 20.7°C | 17.7°C | 29.6°C | 14.9°C | 65 mm | 74% | 2.6 m/s | 4.1 |
| 1986 | 26.1°C | 22.0°C | 17.8°C | 32.8°C | 14.7°C | 41 mm | 66% | 2.4 m/s | 4.7 |
| 1985 | 23.2°C | 20.0°C | 16.7°C | 29.1°C | 12.4°C | 213 mm | 77% | 2.6 m/s | 4.2 |
| 1984 | 22.1°C | 19.3°C | 16.6°C | 24.8°C | 12.2°C | 191 mm | 78% | 2.6 m/s | 4.2 |
| 1983 | 22.8°C | 19.9°C | 17.0°C | 27.9°C | 12.2°C | 179 mm | 77% | 2.3 m/s | — |
| 1982 | 23.7°C | 20.6°C | 17.4°C | 28.2°C | 11.1°C | 90 mm | 73% | 2.4 m/s | — |
| 1981 | 23.2°C | 20.2°C | 17.1°C | 25.2°C | 13.8°C | 248 mm | 80% | 2.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 23.9°C with lows near 17.8°C (mean 20.9°C), based on 45 years of NASA POWER data.
April averages 123 mm of rainfall in Grafton, a relatively wet time of year. The wettest on record was 533 mm in 1988.
The hottest April reached 32.8°C in 1986. The coldest dipped to 9.3°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.8°C. Daytime highs moved from 23°C to 23.7°C and overnight lows from 17°C to 18°C over the same span.
April is one of the warmer months of the year in Grafton and a relatively wet time of year, so plan for around 23.9°C daytime highs and 17.8°C at night.
Not quite — April is the 7th coolest month in Grafton, averaging 20.9°C.
For April in Grafton, pack light layers you can adjust through the day, with typical highs of 23.9°C and lows of 17.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 75% — quite humid.
Average wind speed in April is 2.6 m/s. The windiest April on record averaged 3.2 m/s (2008).
The wettest April on record was 1988 with 533 mm. On average, April sees 123 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 Grafton 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.
