October is close to Whyalla's year-round average, with average highs near 23.5°C and lows around 12.4°C (mean 18°C). It is about average for rainfall, averaging 23 mm of rainfall and 57% relative humidity across the period.
October is close to Whyalla's year-round average. Across 45 years of records, the warmest October in Whyalla was 2015 — when the month averaged 21.2°C — while the coldest were 1986 and 2001 at 15.5°C. Typical October days reach 23.5°C with nights near 12.4°C. The long-term trend is warming, about 0.5°C per decade.
October is about average for rainfall in Whyalla, averaging 23 mm of rainfall. The wettest October on record was 1992 with 85 mm, while the driest were 2016, 2017 and 2019 at 0 mm.
Relative humidity in Whyalla during October averages 57%. The most humid October was 1992 at 68%, and the least humid was 2019 at 47%.
October receives about 6.5 kWh/m²/day of solar energy in Whyalla. The sunniest Octobers were 1987, 1996 and 2023 at 7 kWh/m²/day, and the cloudiest were 2020 and 2022 at 5.5.
Average wind speed in Whyalla during October is 4.2 m/s. The windiest October was 2016 at 5 m/s, while the calmest was 1992 at 3.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.2°C | 17.6°C | 17.7°C | 18.8°C | 18.7°C | +1.5°C |
| Avg High | 22.8°C | 23.0°C | 23.3°C | 24.5°C | 24.0°C | +1.2°C |
| Avg Low | 11.6°C | 12.2°C | 12.1°C | 13.1°C | 13.4°C | +1.8°C |
| Avg Rain | 24 mm | 35 mm | 18 mm | 14 mm | 27 mm | +3 mm |
October temperatures in Whyalla have risen by about 1.5°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 6.5°C (2003) to a record high of 35.9°C (1987).
Rainfall in October is about average for rainfall, averaging 23 mm, with a wettest year of 85 mm.
A good time to visit Whyalla
October is a good time to visit Whyalla, with days averaging 23.5°C and nights around 12.4°C (mean 18°C, close to Whyalla's yearly average) and low rainfall. March and December are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.3°C | 19.8°C | 14.3°C | 35.5°C | 10.6°C | 12 mm | 55% | 4 m/s | 6.1 |
| 2024 | 26.2°C | 20.4°C | 14.7°C | 34.0°C | 11.1°C | 13 mm | 53% | 3.8 m/s | 6.5 |
| 2023 | 23.9°C | 18.5°C | 13.1°C | 33.1°C | 9.5°C | 11 mm | 53% | 4.3 m/s | 7 |
| 2022 | 22.1°C | 17.7°C | 13.2°C | 29.6°C | 9.6°C | 74 mm | 65% | 4 m/s | 5.5 |
| 2021 | 23.0°C | 17.6°C | 12.2°C | 32.5°C | 8.6°C | 13 mm | 55% | 4.5 m/s | 6.7 |
| 2020 | 23.5°C | 18.3°C | 13.2°C | 31.7°C | 9.5°C | 40 mm | 58% | 4.2 m/s | 5.5 |
| 2019 | 26.3°C | 20.1°C | 14.0°C | 35.9°C | 9.8°C | 0 mm | 47% | 3.9 m/s | 6.8 |
| 2018 | 25.2°C | 19.6°C | 14.0°C | 35.6°C | 9.0°C | 2 mm | 50% | 4.1 m/s | 6.1 |
| 2017 | 24.9°C | 19.2°C | 13.5°C | 33.3°C | 8.7°C | 0 mm | 54% | 4.5 m/s | 6.6 |
| 2016 | 22.3°C | 16.6°C | 10.8°C | 30.0°C | 6.6°C | 0 mm | 56% | 5 m/s | 6.5 |
| 2015 🔥 | 27.3°C | 21.2°C | 15.1°C | 34.3°C | 11.1°C | 3 mm | 51% | 3.7 m/s | 6.5 |
| 2014 | 26.8°C | 20.4°C | 14.0°C | 34.9°C | 9.3°C | 3 mm | 52% | 3.9 m/s | 6.8 |
| 2013 | 23.5°C | 18.0°C | 12.5°C | 34.0°C | 9.4°C | 7 mm | 55% | 4.8 m/s | 6.7 |
| 2012 | 24.3°C | 18.4°C | 12.4°C | 33.0°C | 8.4°C | 13 mm | 53% | 4.1 m/s | 6.8 |
| 2011 | 22.5°C | 17.8°C | 13.0°C | 31.2°C | 8.1°C | 46 mm | 64% | 3.8 m/s | 5.8 |
| 2010 | 21.7°C | 16.8°C | 11.9°C | 29.7°C | 9.0°C | 61 mm | 64% | 4.1 m/s | 6.2 |
| 2009 | 22.7°C | 17.4°C | 12.0°C | 34.1°C | 7.7°C | 31 mm | 61% | 4.1 m/s | 6.6 |
| 2008 | 25.1°C | 19.2°C | 13.3°C | 33.7°C | 9.3°C | 3 mm | 51% | 4.2 m/s | 6.7 |
| 2007 | 24.6°C | 18.7°C | 12.8°C | 33.2°C | 10.0°C | 18 mm | 53% | 4.6 m/s | 6.4 |
| 2006 | 25.1°C | 18.8°C | 12.5°C | 34.5°C | 9.0°C | 1 mm | 48% | 4.5 m/s | 6.9 |
| 2005 | 23.9°C | 18.2°C | 12.6°C | 29.7°C | 8.7°C | 42 mm | 61% | 4.2 m/s | 6 |
| 2004 | 24.9°C | 19.1°C | 13.2°C | 35.2°C | 9.8°C | 2 mm | 53% | 3.9 m/s | 6.7 |
| 2003 | 20.6°C | 15.6°C | 10.5°C | 29.8°C | 6.5°C | 21 mm | 62% | 4.4 m/s | 6.3 |
| 2002 | 23.3°C | 17.4°C | 11.6°C | 31.0°C | 8.5°C | 6 mm | 53% | 4.7 m/s | 6.4 |
| 2001 | 20.4°C | 15.5°C | 10.6°C | 29.1°C | 8.3°C | 30 mm | 64% | 4.4 m/s | 6.2 |
| 2000 | 22.3°C | 17.2°C | 12.2°C | 31.7°C | 9.2°C | 27 mm | 60% | 4.1 m/s | 6.3 |
| 1999 | 23.8°C | 18.4°C | 13.0°C | 32.5°C | 9.4°C | 45 mm | 58% | 4.2 m/s | 6.4 |
| 1998 | 22.6°C | 17.6°C | 12.5°C | 35.6°C | 9.7°C | 24 mm | 59% | 4.3 m/s | 6.1 |
| 1997 | 23.0°C | 17.8°C | 12.6°C | 31.4°C | 9.2°C | 63 mm | 60% | 3.9 m/s | 6.3 |
| 1996 | 23.0°C | 17.0°C | 11.1°C | 32.1°C | 7.9°C | 19 mm | 59% | 4.3 m/s | 7 |
| 1995 | 23.1°C | 17.6°C | 12.2°C | 33.5°C | 7.6°C | 33 mm | 59% | 4.7 m/s | 6.3 |
| 1994 | 23.7°C | 18.1°C | 12.5°C | 33.8°C | 8.0°C | 12 mm | 55% | 4.3 m/s | 6.7 |
| 1993 | 22.0°C | 16.8°C | 11.6°C | 30.2°C | 8.1°C | 54 mm | 59% | 4.3 m/s | 6.7 |
| 1992 🌧️ | 21.4°C | 16.5°C | 11.6°C | 29.0°C | 7.3°C | 85 mm | 68% | 3.6 m/s | 5.8 |
| 1991 | 24.1°C | 18.4°C | 12.6°C | 31.6°C | 9.5°C | 4 mm | 55% | 4.3 m/s | 6.8 |
| 1990 | 23.7°C | 17.9°C | 12.2°C | 33.2°C | 8.6°C | 15 mm | 55% | 4.4 m/s | 6.7 |
| 1989 | 22.0°C | 16.5°C | 11.1°C | 27.6°C | 7.9°C | 9 mm | 59% | 4.4 m/s | 6.5 |
| 1988 | 25.3°C | 19.0°C | 12.6°C | 35.1°C | 9.5°C | 12 mm | 52% | 4.2 m/s | 6.8 |
| 1987 | 22.8°C | 17.1°C | 11.4°C | 35.9°C | 7.3°C | 12 mm | 58% | 4.3 m/s | 7 |
| 1986 ❄️ | 20.6°C | 15.5°C | 10.5°C | 28.2°C | 7.9°C | 47 mm | 60% | 4.6 m/s | 6.2 |
| 1985 | 22.0°C | 16.8°C | 11.6°C | 28.9°C | 8.3°C | 43 mm | 61% | 4.5 m/s | 6.4 |
| 1984 | 22.9°C | 17.4°C | 11.9°C | 28.6°C | 9.0°C | 36 mm | 58% | 4 m/s | 6.6 |
| 1983 | 22.9°C | 17.6°C | 12.3°C | 34.0°C | 8.3°C | 30 mm | 60% | 4.1 m/s | — |
| 1982 | 23.0°C | 17.3°C | 11.7°C | 31.9°C | 8.3°C | 7 mm | 52% | 4.3 m/s | — |
| 1981 | 23.4°C | 17.4°C | 11.5°C | 30.7°C | 8.7°C | 18 mm | 55% | 4.5 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 23.5°C with lows near 12.4°C (mean 18°C), based on 45 years of NASA POWER data.
October averages 23 mm of rainfall in Whyalla, about average for rainfall. The wettest on record was 85 mm in 1992.
The hottest October reached 35.9°C in 1987. The coldest dipped to 6.5°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.5°C. Daytime highs moved from 22.8°C to 24.1°C and overnight lows from 11.8°C to 13.5°C over the same span.
October is close to Whyalla's year-round average and about average for rainfall, so plan for around 23.5°C daytime highs and 12.4°C at night.
Not quite — October is the 6th coolest month in Whyalla, averaging 18°C.
For October in Whyalla, pack light layers you can adjust through the day, with typical highs of 23.5°C and lows of 12.4°C.
Relative humidity in October averages 57% — moderately humid.
Average wind speed in October is 4.2 m/s. The windiest October on record averaged 5 m/s (2016).
The wettest October on record was 1992 with 85 mm. On average, October sees 23 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 October, 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 October specifically, along with year-by-year records and how the month has changed over the decades.
