April is one of the warmer months of the year in Tumby Bay, with average highs near 19.9°C and lows around 16.5°C (mean 18.2°C). It is about average for rainfall, averaging 25 mm of rainfall and 72% relative humidity across the period.
April is one of the warmer months of the year in Tumby Bay. Across 45 years of records, the warmest April in Tumby Bay was 2018 — when the month averaged 20.3°C — while the coldest was 1995 at 16.3°C. Typical April days reach 19.9°C with nights near 16.5°C. The long-term trend is warming, about 0.3°C per decade.
April is about average for rainfall in Tumby Bay, averaging 25 mm of rainfall. The wettest April on record was 1983 with 139 mm, while the driest was 1993 at 2 mm.
Relative humidity in Tumby Bay during April averages 72%. The most humid April was 2003 at 75%, and the least humid was 2019 at 66%.
April receives about 3.9 kWh/m²/day of solar energy in Tumby Bay. The sunniest April was 2018 at 4.3 kWh/m²/day, and the cloudiest were 1998, 2004 and 2015, among others at 3.5.
Average wind speed in Tumby Bay during April is 4.8 m/s. The windiest April was 1986 at 6 m/s, while the calmest were 1992 and 1993 at 4.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.9°C | 17.7°C | 18.3°C | 18.7°C | 18.6°C | +0.7°C |
| Avg High | 19.6°C | 19.4°C | 20.1°C | 20.4°C | 20.2°C | +0.6°C |
| Avg Low | 16.1°C | 16.0°C | 16.6°C | 17.0°C | 16.9°C | +0.8°C |
| Avg Rain | 36 mm | 23 mm | 25 mm | 19 mm | 22 mm | -14 mm |
April temperatures in Tumby Bay have risen by about 0.9°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 12.3°C (2008) to a record high of 30.8°C (2025).
Rainfall in April is about average for rainfall, averaging 25 mm, with a wettest year of 139 mm.
A good time to visit Tumby Bay
April is a good time to visit Tumby Bay, with days averaging 19.9°C and nights around 16.5°C (mean 18.2°C, warmer than Tumby Bay's yearly average) and low 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 | 22.1°C | 20.2°C | 18.3°C | 30.8°C | 16.2°C | 7 mm | 70% | 4.4 m/s | 4 |
| 2024 | 18.2°C | 17.0°C | 15.7°C | 24.2°C | 14.2°C | 8 mm | 72% | 4.7 m/s | 3.7 |
| 2023 | 20.2°C | 18.4°C | 16.6°C | 26.1°C | 14.4°C | 29 mm | 72% | 5.3 m/s | 3.9 |
| 2022 | 20.6°C | 19.1°C | 17.6°C | 25.6°C | 15.6°C | 27 mm | 74% | 5 m/s | 3.7 |
| 2021 | 20.8°C | 19.0°C | 17.2°C | 28.2°C | 14.4°C | 5 mm | 69% | 4.3 m/s | 4.2 |
| 2020 | 19.4°C | 17.6°C | 15.8°C | 25.1°C | 13.5°C | 57 mm | 74% | 5 m/s | 3.7 |
| 2019 | 21.4°C | 19.2°C | 17.0°C | 28.4°C | 14.9°C | 7 mm | 66% | 4.9 m/s | 4 |
| 2018 🔥 | 22.3°C | 20.3°C | 18.3°C | 30.1°C | 16.2°C | 5 mm | 70% | 4.6 m/s | 4.3 |
| 2017 | 20.1°C | 18.6°C | 17.0°C | 25.5°C | 14.2°C | 15 mm | 73% | 4.4 m/s | 3.9 |
| 2016 | 20.4°C | 18.6°C | 16.8°C | 25.3°C | 15.6°C | 19 mm | 72% | 4.4 m/s | 3.8 |
| 2015 | 17.9°C | 16.8°C | 15.6°C | 23.2°C | 13.6°C | 27 mm | 72% | 5.2 m/s | 3.5 |
| 2014 | 19.9°C | 18.4°C | 16.9°C | 28.7°C | 14.8°C | 17 mm | 73% | 4.7 m/s | 3.7 |
| 2013 | 20.8°C | 19.1°C | 17.3°C | 26.1°C | 14.6°C | 23 mm | 71% | 4.6 m/s | 4 |
| 2012 | 20.9°C | 19.0°C | 17.0°C | 28.0°C | 14.5°C | 31 mm | 70% | 4.4 m/s | 4.1 |
| 2011 | 19.3°C | 17.7°C | 16.1°C | 25.5°C | 14.5°C | 29 mm | 75% | 4.7 m/s | 4.1 |
| 2010 | 20.7°C | 19.1°C | 17.5°C | 25.6°C | 14.9°C | 21 mm | 73% | 4.8 m/s | 3.8 |
| 2009 | 20.1°C | 18.4°C | 16.8°C | 27.3°C | 13.8°C | 33 mm | 72% | 5.2 m/s | 3.9 |
| 2008 | 20.0°C | 18.1°C | 16.3°C | 24.4°C | 12.3°C | 23 mm | 70% | 5 m/s | 3.9 |
| 2007 | 20.9°C | 19.1°C | 17.3°C | 27.0°C | 15.2°C | 41 mm | 73% | 4.9 m/s | 4.1 |
| 2006 | 18.8°C | 17.3°C | 15.8°C | 23.2°C | 14.7°C | 32 mm | 72% | 5.9 m/s | 3.6 |
| 2005 | 21.5°C | 19.3°C | 17.1°C | 29.4°C | 14.8°C | 8 mm | 68% | 4.9 m/s | 4.2 |
| 2004 | 19.8°C | 18.2°C | 16.6°C | 25.3°C | 14.1°C | 32 mm | 74% | 4.4 m/s | 3.5 |
| 2003 | 19.5°C | 17.9°C | 16.2°C | 22.6°C | 14.8°C | 16 mm | 75% | 4.9 m/s | 4.1 |
| 2002 | 20.8°C | 18.8°C | 16.8°C | 26.8°C | 14.7°C | 15 mm | 73% | 4.3 m/s | 4 |
| 2001 | 19.7°C | 17.9°C | 16.1°C | 26.0°C | 14.3°C | 9 mm | 68% | 4.8 m/s | 4.2 |
| 2000 | 20.0°C | 18.4°C | 16.7°C | 23.5°C | 14.7°C | 38 mm | 74% | 5.1 m/s | 4.2 |
| 1999 | 18.4°C | 17.0°C | 15.6°C | 21.7°C | 13.1°C | 7 mm | 73% | 4.5 m/s | 4.1 |
| 1998 | 18.9°C | 17.4°C | 15.8°C | 28.8°C | 13.8°C | 71 mm | 72% | 5.1 m/s | 3.5 |
| 1997 | 20.3°C | 18.5°C | 16.6°C | 25.6°C | 14.6°C | 3 mm | 72% | 4.3 m/s | 3.8 |
| 1996 | 18.2°C | 16.8°C | 15.4°C | 25.4°C | 14.2°C | 17 mm | 73% | 5.1 m/s | 3.5 |
| 1995 ❄️ | 17.9°C | 16.3°C | 14.6°C | 23.9°C | 13.0°C | 31 mm | 73% | 4.9 m/s | 3.9 |
| 1994 | 20.3°C | 18.3°C | 16.3°C | 26.0°C | 14.9°C | 4 mm | 69% | 4.3 m/s | 4.1 |
| 1993 | 21.1°C | 18.9°C | 16.7°C | 27.3°C | 14.6°C | 2 mm | 68% | 4.2 m/s | 4.1 |
| 1992 | 19.1°C | 17.6°C | 16.1°C | 27.7°C | 12.7°C | 61 mm | 74% | 4.2 m/s | 3.8 |
| 1991 | 19.9°C | 18.2°C | 16.4°C | 26.6°C | 13.7°C | 20 mm | 71% | 4.6 m/s | 4.1 |
| 1990 | 19.8°C | 18.3°C | 16.8°C | 26.4°C | 15.0°C | 14 mm | 72% | 5.8 m/s | 4.1 |
| 1989 | 19.5°C | 17.9°C | 16.3°C | 25.5°C | 14.6°C | 29 mm | 74% | 5 m/s | 3.8 |
| 1988 | 19.8°C | 18.2°C | 16.6°C | 23.2°C | 14.7°C | 9 mm | 74% | 5.1 m/s | 3.8 |
| 1987 | 19.6°C | 17.8°C | 15.9°C | 26.4°C | 14.0°C | 29 mm | 70% | 4.5 m/s | 3.9 |
| 1986 | 19.3°C | 17.6°C | 16.0°C | 29.5°C | 14.0°C | 30 mm | 69% | 6 m/s | 3.7 |
| 1985 | 19.8°C | 18.0°C | 16.1°C | 27.9°C | 14.4°C | 31 mm | 70% | 4.8 m/s | 4.2 |
| 1984 | 18.9°C | 17.3°C | 15.6°C | 23.7°C | 12.5°C | 23 mm | 74% | 4.7 m/s | 3.9 |
| 1983 🌧️ | 18.3°C | 16.7°C | 15.1°C | 22.3°C | 12.5°C | 139 mm | 74% | 5.7 m/s | — |
| 1982 | 19.9°C | 18.2°C | 16.4°C | 26.0°C | 13.4°C | 29 mm | 69% | 4.7 m/s | — |
| 1981 | 21.4°C | 19.0°C | 16.7°C | 28.0°C | 13.7°C | 5 mm | 71% | 4.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 19.9°C with lows near 16.5°C (mean 18.2°C), based on 45 years of NASA POWER data.
April averages 25 mm of rainfall in Tumby Bay, about average for rainfall. The wettest on record was 139 mm in 1983.
The hottest April reached 30.8°C in 2025. The coldest dipped to 12.3°C in 2008.
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 19.7°C to 20.4°C and overnight lows from 16°C to 17.1°C over the same span.
April is one of the warmer months of the year in Tumby Bay and about average for rainfall, so plan for around 19.9°C daytime highs and 16.5°C at night.
Not quite — April is the 8th coolest month in Tumby Bay, averaging 18.2°C.
For April in Tumby Bay, pack light layers you can adjust through the day, with typical highs of 19.9°C and lows of 16.5°C.
Relative humidity in April averages 72% — moderately humid.
Average wind speed in April is 4.8 m/s. The windiest April on record averaged 6 m/s (1986).
The wettest April on record was 1983 with 139 mm. On average, April sees 25 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 Tumby Bay 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.
