June is one of the cooler months of the year in Whyalla, with average highs near 16.5°C and lows around 8.8°C (mean 12.7°C). It is about average for rainfall, averaging 33 mm of rainfall and 73% relative humidity across the period.
June is one of the cooler months of the year in Whyalla. Across 45 years of records, the warmest June in Whyalla was 1991 — when the month averaged 14.5°C — while the coldest was 2006 at 11°C. Typical June days reach 16.5°C with nights near 8.8°C. The long-term June temperature trend is broadly flat.
June is about average for rainfall in Whyalla, averaging 33 mm of rainfall. The wettest June on record was 1991 with 92 mm, while the driest was 2017 at 4 mm.
Relative humidity in Whyalla during June averages 73%. The most humid June was 2013 at 79%, and the least humid was 2018 at 66%.
June receives about 2.6 kWh/m²/day of solar energy in Whyalla. The sunniest June was 2017 at 2.9 kWh/m²/day, and the cloudiest was 2024 at 2.3.
Average wind speed in Whyalla during June is 3.6 m/s. The windiest June was 1981 at 5.2 m/s, while the calmest was 2017 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.2°C | 12.9°C | 12.7°C | 12.7°C | 13.0°C | +0.8°C |
| Avg High | 16.2°C | 16.7°C | 16.6°C | 16.5°C | 16.9°C | +0.7°C |
| Avg Low | 8.3°C | 9.2°C | 8.8°C | 8.9°C | 9.1°C | +0.8°C |
| Avg Rain | 34 mm | 41 mm | 34 mm | 31 mm | 18 mm | -15 mm |
June temperatures in Whyalla have risen by about 1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 3.2°C (2002) to a record high of 24.7°C (2023).
Rainfall in June is about average for rainfall, averaging 33 mm, with a wettest year of 92 mm.
A quieter season to visit Whyalla
If your dates are flexible, the more temperate months of March and December tend to be the most comfortable for visiting Whyalla. That said, June — with days averaging 16.5°C and nights around 8.8°C (mean 12.7°C) and moderate rainfall (33 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 16.7°C | 12.8°C | 8.9°C | 21.1°C | 6.6°C | 16 mm | 70% | 3.8 m/s | 2.4 |
| 2024 | 16.6°C | 13.0°C | 9.4°C | 21.6°C | 6.5°C | 19 mm | 72% | 3.5 m/s | 2.3 |
| 2023 | 17.8°C | 13.9°C | 9.9°C | 24.7°C | 7.1°C | 26 mm | 69% | 4.4 m/s | 2.4 |
| 2022 | 16.5°C | 12.8°C | 9.1°C | 19.9°C | 4.7°C | 12 mm | 75% | 3.5 m/s | 2.5 |
| 2021 | 16.8°C | 13.1°C | 9.3°C | 21.8°C | 5.4°C | 30 mm | 73% | 4 m/s | 2.5 |
| 2020 | 16.7°C | 12.2°C | 7.8°C | 20.0°C | 4.0°C | 7 mm | 70% | 3.4 m/s | 2.8 |
| 2019 | 16.6°C | 12.3°C | 8.1°C | 22.0°C | 4.5°C | 11 mm | 68% | 3.4 m/s | 2.6 |
| 2018 | 16.8°C | 12.8°C | 8.9°C | 21.3°C | 4.5°C | 13 mm | 66% | 3.3 m/s | 2.7 |
| 2017 | 17.2°C | 12.9°C | 8.6°C | 19.5°C | 5.4°C | 4 mm | 69% | 2.2 m/s | 2.9 |
| 2016 | 16.4°C | 13.0°C | 9.7°C | 20.0°C | 5.4°C | 50 mm | 74% | 3.9 m/s | 2.5 |
| 2015 | 16.3°C | 12.4°C | 8.5°C | 20.0°C | 5.1°C | 35 mm | 76% | 3.1 m/s | 2.6 |
| 2014 | 16.7°C | 13.2°C | 9.7°C | 19.2°C | 6.8°C | 36 mm | 79% | 4 m/s | 2.6 |
| 2013 | 16.0°C | 13.0°C | 10.0°C | 19.7°C | 7.8°C | 75 mm | 79% | 3.3 m/s | 2.5 |
| 2012 | 15.7°C | 11.9°C | 8.0°C | 19.7°C | 4.6°C | 41 mm | 75% | 3.7 m/s | 2.6 |
| 2011 | 16.8°C | 12.6°C | 8.5°C | 20.6°C | 5.3°C | 23 mm | 75% | 3.5 m/s | 2.7 |
| 2010 | 16.1°C | 12.5°C | 8.8°C | 19.5°C | 4.7°C | 23 mm | 75% | 2.8 m/s | 2.6 |
| 2009 | 16.6°C | 13.0°C | 9.4°C | 19.6°C | 6.4°C | 60 mm | 75% | 4 m/s | 2.4 |
| 2008 | 17.3°C | 13.4°C | 9.5°C | 20.5°C | 6.6°C | 25 mm | 72% | 3.6 m/s | 2.5 |
| 2007 | 14.4°C | 11.3°C | 8.1°C | 18.3°C | 3.7°C | 18 mm | 76% | 3.4 m/s | 2.6 |
| 2006 ❄️ | 15.2°C | 11.0°C | 6.8°C | 17.5°C | 3.2°C | 10 mm | 71% | 3.1 m/s | 2.8 |
| 2005 | 17.5°C | 13.7°C | 9.9°C | 24.4°C | 5.9°C | 42 mm | 68% | 4.4 m/s | 2.6 |
| 2004 | 17.1°C | 13.2°C | 9.3°C | 21.9°C | 5.3°C | 41 mm | 74% | 4.4 m/s | 2.6 |
| 2003 | 16.8°C | 13.0°C | 9.2°C | 22.1°C | 6.1°C | 25 mm | 72% | 3.8 m/s | 2.4 |
| 2002 | 17.1°C | 12.9°C | 8.7°C | 20.9°C | 3.2°C | 21 mm | 69% | 4.1 m/s | 2.5 |
| 2001 | 17.3°C | 13.1°C | 9.0°C | 22.1°C | 4.8°C | 68 mm | 74% | 3.1 m/s | 2.6 |
| 2000 | 16.2°C | 12.4°C | 8.5°C | 19.1°C | 5.2°C | 24 mm | 74% | 3.5 m/s | 2.5 |
| 1999 | 17.1°C | 12.8°C | 8.5°C | 20.7°C | 5.4°C | 31 mm | 72% | 3.6 m/s | 2.8 |
| 1998 | 16.4°C | 12.8°C | 9.1°C | 23.3°C | 4.2°C | 37 mm | 69% | 4 m/s | 2.4 |
| 1997 | 15.9°C | 12.2°C | 8.4°C | 20.9°C | 6.0°C | 7 mm | 73% | 3.7 m/s | 2.5 |
| 1996 | 17.7°C | 13.7°C | 9.7°C | 24.4°C | 6.6°C | 33 mm | 71% | 3.8 m/s | 2.4 |
| 1995 | 16.6°C | 13.1°C | 9.7°C | 23.2°C | 6.3°C | 52 mm | 73% | 4.4 m/s | 2.4 |
| 1994 | 16.9°C | 13.2°C | 9.4°C | 23.0°C | 5.9°C | 70 mm | 72% | 3.4 m/s | 2.5 |
| 1993 | 16.0°C | 12.3°C | 8.6°C | 20.0°C | 5.5°C | 23 mm | 75% | 3.4 m/s | 2.6 |
| 1992 | 16.0°C | 12.2°C | 8.5°C | 21.1°C | 6.2°C | 20 mm | 74% | 3.2 m/s | 2.7 |
| 1991 🔥 🌧️ | 18.1°C | 14.5°C | 10.9°C | 23.3°C | 8.7°C | 92 mm | 77% | 3.5 m/s | 2.4 |
| 1990 | 16.4°C | 12.6°C | 8.8°C | 20.9°C | 5.3°C | 50 mm | 74% | 4.2 m/s | 2.7 |
| 1989 | 14.3°C | 11.1°C | 7.9°C | 18.0°C | 3.9°C | 59 mm | 76% | 4.2 m/s | 2.4 |
| 1988 | 17.2°C | 13.2°C | 9.3°C | 21.6°C | 5.4°C | 47 mm | 73% | 4.1 m/s | 2.6 |
| 1987 | 16.8°C | 12.9°C | 9.0°C | 20.8°C | 5.9°C | 22 mm | 74% | 3.5 m/s | 2.5 |
| 1986 | 16.2°C | 12.4°C | 8.7°C | 20.0°C | 5.4°C | 39 mm | 72% | 3.1 m/s | 2.7 |
| 1985 | 16.6°C | 12.4°C | 8.2°C | 19.7°C | 5.3°C | 17 mm | 69% | 3.6 m/s | 2.7 |
| 1984 | 16.5°C | 12.0°C | 7.6°C | 20.8°C | 4.0°C | 21 mm | 70% | 3.1 m/s | 2.7 |
| 1983 | 16.7°C | 12.5°C | 8.2°C | 19.7°C | 5.3°C | 16 mm | 73% | 3.1 m/s | — |
| 1982 | 15.8°C | 11.4°C | 6.9°C | 18.3°C | 3.9°C | 27 mm | 70% | 3.6 m/s | — |
| 1981 | 16.0°C | 12.3°C | 8.6°C | 19.4°C | 5.2°C | 56 mm | 74% | 5.2 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 16.5°C with lows near 8.8°C (mean 12.7°C), based on 45 years of NASA POWER data.
June averages 33 mm of rainfall in Whyalla, about average for rainfall. The wettest on record was 92 mm in 1991.
The hottest June reached 24.7°C in 2023. The coldest dipped to 3.2°C in 2002.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1°C. Daytime highs moved from 16.3°C to 16.9°C and overnight lows from 7.9°C to 9.3°C over the same span.
June is one of the cooler months of the year in Whyalla and about average for rainfall, so plan for around 16.5°C daytime highs and 8.8°C at night.
Not quite — June is the 2nd coolest month in Whyalla, averaging 12.7°C.
For June in Whyalla, pack light layers you can adjust through the day, with typical highs of 16.5°C and lows of 8.8°C.
Relative humidity in June averages 73% — moderately humid.
Average wind speed in June is 3.6 m/s. The windiest June on record averaged 5.2 m/s (1981).
The wettest June on record was 1991 with 92 mm. On average, June sees 33 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 June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
