August is one of the cooler months of the year in Port Lincoln, with average highs near 15.8°C and lows around 9.7°C (mean 12.8°C). It is a relatively wet time of year, averaging 53 mm of rainfall and 74% relative humidity across the period.
August is one of the cooler months of the year in Port Lincoln. Across 45 years of records, the warmest August in Port Lincoln was 2024 — when the month averaged 14.9°C — while the coldest was 1989 at 10.9°C. Typical August days reach 15.8°C with nights near 9.7°C. The long-term trend is warming, about 0.3°C per decade.
August is a relatively wet time of year in Port Lincoln, averaging 53 mm of rainfall. The wettest August on record was 1985 with 127 mm, while the driest was 2014 at 12 mm.
Relative humidity in Port Lincoln during August averages 74%. The most humid August was 1989 at 79%, and the least humid were 2018 and 2019 at 68%.
August receives about 3.4 kWh/m²/day of solar energy in Port Lincoln. The sunniest Augusts were 1995, 2006 and 2024 at 3.7 kWh/m²/day, and the cloudiest were 2003 and 2010 at 3.
Average wind speed in Port Lincoln during August is 5.5 m/s. The windiest August was 1991 at 7.1 m/s, while the calmest was 2014 at 3.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.3°C | 12.5°C | 12.8°C | 12.9°C | 13.4°C | +1.1°C |
| Avg High | 15.3°C | 15.6°C | 15.9°C | 15.9°C | 16.6°C | +1.3°C |
| Avg Low | 9.3°C | 9.5°C | 9.6°C | 9.9°C | 10.3°C | +1°C |
| Avg Rain | 69 mm | 60 mm | 54 mm | 43 mm | 34 mm | -36 mm |
August temperatures in Port Lincoln have risen by about 1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4.9°C (1989) to a record high of 26.7°C (2007).
Rainfall in August is a relatively wet time of year, averaging 53 mm, with a wettest year of 127 mm.
A quieter season to visit Port Lincoln
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Port Lincoln. That said, August — with days averaging 15.8°C and nights around 9.7°C (mean 12.8°C) and moderate rainfall (53 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 | 16.3°C | 13.2°C | 10.1°C | 21.4°C | 6.8°C | 29 mm | 70% | 5.9 m/s | 3.4 |
| 2024 🔥 | 18.4°C | 14.9°C | 11.3°C | 25.5°C | 7.9°C | 18 mm | 71% | 5.7 m/s | 3.7 |
| 2023 | 17.5°C | 14.0°C | 10.6°C | 24.0°C | 6.5°C | 13 mm | 71% | 4.4 m/s | 3.3 |
| 2022 | 15.6°C | 12.8°C | 10.1°C | 22.2°C | 6.6°C | 70 mm | 74% | 6 m/s | 3.1 |
| 2021 | 16.2°C | 13.0°C | 9.8°C | 21.9°C | 7.1°C | 21 mm | 74% | 5 m/s | 3.6 |
| 2020 | 15.5°C | 12.7°C | 10.0°C | 24.0°C | 7.4°C | 51 mm | 73% | 5.7 m/s | 3.5 |
| 2019 | 15.9°C | 12.6°C | 9.4°C | 22.5°C | 6.4°C | 23 mm | 68% | 5.3 m/s | 3.3 |
| 2018 | 16.4°C | 13.4°C | 10.4°C | 24.1°C | 6.6°C | 46 mm | 68% | 6.4 m/s | 3.3 |
| 2017 | 15.9°C | 13.2°C | 10.5°C | 22.7°C | 7.3°C | 31 mm | 69% | 6 m/s | 3.1 |
| 2016 | 16.8°C | 13.2°C | 9.6°C | 23.2°C | 6.8°C | 19 mm | 69% | 5.1 m/s | 3.5 |
| 2015 | 15.3°C | 12.6°C | 9.8°C | 20.9°C | 7.1°C | 34 mm | 75% | 4.9 m/s | 3.1 |
| 2014 | 16.0°C | 12.5°C | 9.0°C | 22.1°C | 5.0°C | 12 mm | 74% | 3.7 m/s | 3.6 |
| 2013 | 16.3°C | 13.4°C | 10.5°C | 22.4°C | 6.9°C | 70 mm | 78% | 6.2 m/s | 3.4 |
| 2012 | 15.1°C | 12.3°C | 9.5°C | 20.1°C | 6.3°C | 53 mm | 74% | 5.6 m/s | 3.2 |
| 2011 | 16.8°C | 13.7°C | 10.7°C | 21.7°C | 8.6°C | 54 mm | 77% | 4.6 m/s | 3.6 |
| 2010 | 14.4°C | 12.0°C | 9.6°C | 19.2°C | 6.5°C | 84 mm | 75% | 5.9 m/s | 3 |
| 2009 | 16.7°C | 13.5°C | 10.4°C | 22.5°C | 6.2°C | 36 mm | 76% | 5.8 m/s | 3.6 |
| 2008 | 14.0°C | 11.6°C | 9.1°C | 18.1°C | 6.9°C | 67 mm | 74% | 5.4 m/s | 3.3 |
| 2007 | 16.8°C | 13.4°C | 9.9°C | 26.7°C | 6.1°C | 19 mm | 74% | 5.3 m/s | 3.6 |
| 2006 | 17.4°C | 13.5°C | 9.6°C | 23.0°C | 6.9°C | 19 mm | 73% | 4.3 m/s | 3.7 |
| 2005 | 16.2°C | 13.0°C | 9.9°C | 22.7°C | 7.5°C | 65 mm | 74% | 5.8 m/s | 3.2 |
| 2004 | 15.7°C | 12.7°C | 9.6°C | 23.2°C | 7.4°C | 74 mm | 77% | 5.5 m/s | 3.6 |
| 2003 | 14.7°C | 11.9°C | 9.1°C | 18.1°C | 5.0°C | 93 mm | 75% | 6.2 m/s | 3 |
| 2002 | 16.0°C | 12.6°C | 9.2°C | 22.5°C | 6.8°C | 40 mm | 70% | 5.2 m/s | 3.4 |
| 2001 | 16.3°C | 13.2°C | 10.0°C | 23.5°C | 5.7°C | 61 mm | 72% | 5.9 m/s | 3.1 |
| 2000 | 15.2°C | 12.3°C | 9.5°C | 19.3°C | 7.2°C | 69 mm | 77% | 5 m/s | 3.4 |
| 1999 | 16.8°C | 13.2°C | 9.5°C | 23.2°C | 5.1°C | 38 mm | 71% | 5 m/s | 3.5 |
| 1998 | 16.3°C | 13.0°C | 9.7°C | 22.6°C | 7.0°C | 47 mm | 77% | 5 m/s | 3.5 |
| 1997 | 15.0°C | 12.2°C | 9.3°C | 20.6°C | 6.7°C | 73 mm | 72% | 5.2 m/s | 3.2 |
| 1996 | 14.7°C | 12.2°C | 9.7°C | 19.1°C | 6.9°C | 76 mm | 78% | 5.4 m/s | 3.2 |
| 1995 | 16.4°C | 12.7°C | 9.1°C | 23.3°C | 6.1°C | 25 mm | 76% | 5 m/s | 3.7 |
| 1994 | 15.3°C | 12.0°C | 8.8°C | 22.2°C | 6.2°C | 21 mm | 71% | 4.7 m/s | 3.6 |
| 1993 | 17.0°C | 13.4°C | 9.8°C | 23.5°C | 6.1°C | 63 mm | 72% | 5.3 m/s | 3.4 |
| 1992 | 14.5°C | 11.8°C | 9.1°C | 18.4°C | 5.9°C | 113 mm | 75% | 6.5 m/s | 3.1 |
| 1991 | 15.2°C | 12.5°C | 9.8°C | 19.2°C | 6.7°C | 66 mm | 72% | 7.1 m/s | 3.3 |
| 1990 | 14.3°C | 12.0°C | 9.7°C | 18.7°C | 6.8°C | 73 mm | 77% | 6.3 m/s | 3.2 |
| 1989 ❄️ | 13.4°C | 10.9°C | 8.4°C | 19.2°C | 4.9°C | 68 mm | 79% | 5.7 m/s | 3.4 |
| 1988 | 15.3°C | 12.3°C | 9.3°C | 19.8°C | 5.3°C | 33 mm | 72% | 5.4 m/s | 3.3 |
| 1987 | 14.8°C | 12.0°C | 9.2°C | 21.3°C | 6.8°C | 42 mm | 76% | 4.7 m/s | 3.2 |
| 1986 | 15.0°C | 12.3°C | 9.6°C | 20.8°C | 6.7°C | 82 mm | 76% | 5.4 m/s | 3.2 |
| 1985 🌧️ | 15.0°C | 12.2°C | 9.4°C | 23.2°C | 6.4°C | 127 mm | 78% | 5.7 m/s | 3.3 |
| 1984 | 14.9°C | 12.2°C | 9.4°C | 19.9°C | 6.0°C | 106 mm | 75% | 6.8 m/s | 3.2 |
| 1983 | 15.9°C | 12.4°C | 9.0°C | 21.2°C | 5.1°C | 52 mm | 78% | 4.9 m/s | — |
| 1982 | 18.2°C | 13.9°C | 9.6°C | 24.4°C | 6.8°C | 25 mm | 71% | 4.2 m/s | — |
| 1981 | 14.9°C | 12.3°C | 9.6°C | 19.3°C | 5.9°C | 90 mm | 77% | 6.6 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 15.8°C with lows near 9.7°C (mean 12.8°C), based on 45 years of NASA POWER data.
August averages 53 mm of rainfall in Port Lincoln, a relatively wet time of year. The wettest on record was 127 mm in 1985.
The hottest August reached 26.7°C in 2007. The coldest dipped to 4.9°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1°C. Daytime highs moved from 15.8°C to 16.8°C and overnight lows from 9.4°C to 10.4°C over the same span.
August is one of the cooler months of the year in Port Lincoln and a relatively wet time of year, so plan for around 15.8°C daytime highs and 9.7°C at night.
Not quite — August is the 2nd coolest month in Port Lincoln, averaging 12.8°C.
For August in Port Lincoln, pack light layers you can adjust through the day, with typical highs of 15.8°C and lows of 9.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 74% — moderately humid.
Average wind speed in August is 5.5 m/s. The windiest August on record averaged 7.1 m/s (1991).
The wettest August on record was 1985 with 127 mm. On average, August sees 53 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 Port Lincoln behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
