March is one of the warmer months of the year in Whyalla, with average highs near 27.7°C and lows around 17.6°C (mean 22.7°C). It is about average for rainfall, averaging 16 mm of rainfall and 54% relative humidity across the period.
March is one of the warmer months of the year in Whyalla. Across 45 years of records, the warmest Marchs in Whyalla were 2024 and 2025 — when the month averaged 25.8°C — while the coldest was 1987 at 20.1°C. Typical March days reach 27.7°C with nights near 17.6°C. The long-term trend is warming, about 0.5°C per decade.
March is about average for rainfall in Whyalla, averaging 16 mm of rainfall. The wettest March on record was 1989 with 82 mm, while the driest were 2017, 2018 and 2019, among others at 0 mm.
Relative humidity in Whyalla during March averages 54%. The most humid March was 2011 at 66%, and the least humid was 2008 at 41%.
March receives about 5.9 kWh/m²/day of solar energy in Whyalla. The sunniest March was 1994 at 6.5 kWh/m²/day, and the cloudiest were 1989 and 2011 at 5.1.
Average wind speed in Whyalla during March is 4 m/s. The windiest March was 1997 at 4.8 m/s, while the calmest were 2008 and 2016 at 3.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.2°C | 22.0°C | 22.5°C | 23.1°C | 23.8°C | +1.6°C |
| Avg High | 27.4°C | 27.2°C | 27.7°C | 28.1°C | 28.7°C | +1.3°C |
| Avg Low | 17.1°C | 16.9°C | 17.4°C | 18.2°C | 18.8°C | +1.7°C |
| Avg Rain | 25 mm | 10 mm | 15 mm | 15 mm | 14 mm | -11 mm |
March temperatures in Whyalla have risen by about 2°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 11.5°C (1987) to a record high of 39.6°C (2025).
Rainfall in March is about average for rainfall, averaging 16 mm, with a wettest year of 82 mm.
One of the best times to visit Whyalla
March is one of the best times to visit Whyalla. Expect days averaging 27.7°C and nights around 17.6°C (mean 22.7°C) — warmer than Whyalla's yearly average — with low rainfall (16 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 | 31.1°C | 25.8°C | 20.6°C | 39.6°C | 15.4°C | 16 mm | 51% | 4.1 m/s | 6 |
| 2024 🔥 | 30.8°C | 25.8°C | 20.8°C | 38.6°C | 14.7°C | 16 mm | 48% | 3.7 m/s | 5.9 |
| 2023 | 28.2°C | 23.2°C | 18.1°C | 35.9°C | 15.2°C | 4 mm | 56% | 3.8 m/s | 5.6 |
| 2022 | 28.3°C | 23.5°C | 18.8°C | 34.6°C | 15.0°C | 10 mm | 55% | 4 m/s | 6 |
| 2021 | 26.8°C | 22.2°C | 17.5°C | 34.4°C | 13.8°C | 17 mm | 56% | 3.5 m/s | 5.8 |
| 2020 | 26.8°C | 22.0°C | 17.3°C | 34.3°C | 13.1°C | 23 mm | 54% | 3.9 m/s | 5.6 |
| 2019 | 29.2°C | 24.1°C | 19.0°C | 39.5°C | 14.0°C | 0 mm | 51% | 3.9 m/s | 5.7 |
| 2018 | 28.5°C | 23.4°C | 18.2°C | 36.2°C | 14.9°C | 0 mm | 52% | 4.4 m/s | 6.1 |
| 2017 | 30.4°C | 25.0°C | 19.6°C | 37.9°C | 14.5°C | 0 mm | 51% | 4.1 m/s | 6.1 |
| 2016 | 29.8°C | 24.9°C | 19.9°C | 38.2°C | 14.6°C | 12 mm | 52% | 3.4 m/s | 5.5 |
| 2015 | 26.4°C | 21.7°C | 16.9°C | 32.6°C | 13.1°C | 3 mm | 54% | 4.1 m/s | 5.8 |
| 2014 | 27.6°C | 22.6°C | 17.6°C | 35.2°C | 14.4°C | 4 mm | 58% | 3.8 m/s | 5.9 |
| 2013 | 28.2°C | 23.4°C | 18.5°C | 36.6°C | 14.8°C | 15 mm | 54% | 3.9 m/s | 5.7 |
| 2012 | 26.5°C | 21.6°C | 16.8°C | 32.0°C | 13.7°C | 26 mm | 60% | 4 m/s | 5.9 |
| 2011 | 25.6°C | 21.3°C | 17.0°C | 32.8°C | 13.1°C | 65 mm | 66% | 4.4 m/s | 5.1 |
| 2010 | 28.3°C | 23.3°C | 18.3°C | 33.7°C | 14.0°C | 28 mm | 52% | 3.8 m/s | 5.7 |
| 2009 | 27.4°C | 22.6°C | 17.7°C | 34.6°C | 14.8°C | 15 mm | 54% | 3.8 m/s | 5.5 |
| 2008 | 30.5°C | 24.8°C | 19.2°C | 38.5°C | 12.9°C | 7 mm | 41% | 3.4 m/s | 6 |
| 2007 | 27.6°C | 22.7°C | 17.9°C | 38.6°C | 12.5°C | 53 mm | 55% | 4.4 m/s | 5.5 |
| 2006 | 28.6°C | 23.5°C | 18.3°C | 37.1°C | 15.2°C | 26 mm | 54% | 4.1 m/s | 5.9 |
| 2005 | 27.5°C | 22.0°C | 16.6°C | 36.3°C | 12.9°C | 5 mm | 52% | 4.1 m/s | 6 |
| 2004 | 28.2°C | 22.5°C | 16.7°C | 37.1°C | 13.0°C | 5 mm | 49% | 4.3 m/s | 6.2 |
| 2003 | 25.1°C | 20.3°C | 15.5°C | 32.9°C | 13.2°C | 3 mm | 57% | 3.9 m/s | 6.1 |
| 2002 | 27.2°C | 21.9°C | 16.6°C | 34.6°C | 13.3°C | 4 mm | 53% | 4.4 m/s | 6.3 |
| 2001 | 27.4°C | 22.1°C | 16.7°C | 35.9°C | 11.9°C | 14 mm | 51% | 4.3 m/s | 6 |
| 2000 | 27.8°C | 23.1°C | 18.5°C | 39.4°C | 13.0°C | 17 mm | 55% | 4.1 m/s | 5.4 |
| 1999 | 27.6°C | 22.9°C | 18.3°C | 37.4°C | 11.7°C | 25 mm | 56% | 4.3 m/s | 5.4 |
| 1998 | 27.8°C | 22.8°C | 17.7°C | 37.2°C | 14.2°C | 10 mm | 53% | 4 m/s | 5.9 |
| 1997 | 24.8°C | 20.2°C | 15.7°C | 31.1°C | 12.7°C | 2 mm | 58% | 4.8 m/s | 6 |
| 1996 | 28.6°C | 23.1°C | 17.7°C | 36.0°C | 13.7°C | 6 mm | 49% | 3.8 m/s | 5.9 |
| 1995 | 25.4°C | 20.5°C | 15.7°C | 33.9°C | 12.4°C | 21 mm | 60% | 4.4 m/s | 6 |
| 1994 | 27.4°C | 21.9°C | 16.3°C | 32.9°C | 12.4°C | 0 mm | 49% | 3.6 m/s | 6.5 |
| 1993 | 26.9°C | 21.9°C | 16.8°C | 35.8°C | 12.2°C | 6 mm | 56% | 3.6 m/s | 5.7 |
| 1992 | 27.1°C | 21.9°C | 16.7°C | 34.8°C | 12.5°C | 16 mm | 63% | 3.8 m/s | 5.7 |
| 1991 | 27.0°C | 21.6°C | 16.1°C | 38.1°C | 13.3°C | 10 mm | 52% | 4.1 m/s | 5.9 |
| 1990 | 29.0°C | 23.6°C | 18.2°C | 36.8°C | 13.7°C | 5 mm | 50% | 4.3 m/s | 6.3 |
| 1989 🌧️ | 27.0°C | 22.3°C | 17.6°C | 37.9°C | 12.9°C | 82 mm | 59% | 4 m/s | 5.1 |
| 1988 | 28.4°C | 23.2°C | 17.9°C | 36.7°C | 13.9°C | 18 mm | 50% | 4.1 m/s | 5.9 |
| 1987 ❄️ | 25.2°C | 20.1°C | 15.1°C | 34.2°C | 11.5°C | 4 mm | 55% | 4.3 m/s | 5.9 |
| 1986 | 29.9°C | 23.9°C | 17.9°C | 39.0°C | 14.5°C | 0 mm | 48% | 4.3 m/s | 6.4 |
| 1985 | 28.6°C | 23.1°C | 17.6°C | 35.0°C | 14.0°C | 25 mm | 53% | 4.2 m/s | 6 |
| 1984 | 27.0°C | 21.5°C | 16.1°C | 36.2°C | 11.8°C | 4 mm | 50% | 4.3 m/s | 5.8 |
| 1983 | 27.4°C | 22.7°C | 18.0°C | 36.5°C | 14.2°C | 40 mm | 60% | 4.1 m/s | — |
| 1982 | 27.8°C | 22.6°C | 17.5°C | 37.3°C | 13.0°C | 41 mm | 53% | 4.2 m/s | — |
| 1981 | 25.0°C | 20.4°C | 15.9°C | 32.6°C | 13.4°C | 12 mm | 56% | 4 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 27.7°C with lows near 17.6°C (mean 22.7°C), based on 45 years of NASA POWER data.
March averages 16 mm of rainfall in Whyalla, about average for rainfall. The wettest on record was 82 mm in 1989.
The hottest March reached 39.6°C in 2025. The coldest dipped to 11.5°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2°C. Daytime highs moved from 27.2°C to 29°C and overnight lows from 17°C to 19.2°C over the same span.
March is one of the warmer months of the year in Whyalla and about average for rainfall, so plan for around 27.7°C daytime highs and 17.6°C at night.
Not quite — March is the 9th coolest month in Whyalla, averaging 22.7°C.
For March in Whyalla, pack light layers you can adjust through the day, with typical highs of 27.7°C and lows of 17.6°C.
Relative humidity in March averages 54% — relatively dry.
Average wind speed in March is 4 m/s. The windiest March on record averaged 4.8 m/s (1997).
The wettest March on record was 1989 with 82 mm. On average, March sees 16 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 Whyalla behaves each March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
