January is one of the warmer months of the year in Port Augusta, with average highs near 34.3°C and lows around 18.7°C (mean 26.5°C). It is about average for rainfall, averaging 17 mm of rainfall and 40% relative humidity across the period.
January is one of the warmer months of the year in Port Augusta. Across 45 years of records, the warmest January in Port Augusta was 2001 — when the month averaged 31°C — while the coldest was 1992 at 22.5°C. Typical January days reach 34.3°C with nights near 18.7°C. The long-term trend is warming, about 0.5°C per decade.
January is about average for rainfall in Port Augusta, averaging 17 mm of rainfall. The wettest January on record was 2007 with 94 mm, while the driest were 2017, 2018 and 2019 at 0 mm.
Relative humidity in Port Augusta during January averages 40%. The most humid January was 1993 at 55%, and the least humid was 2003 at 32%.
January receives about 8.1 kWh/m²/day of solar energy in Port Augusta. The sunniest January was 2009 at 9 kWh/m²/day, and the cloudiest was 2022 at 7.3.
Average wind speed in Port Augusta during January is 4.2 m/s. The windiest January was 1989 at 4.7 m/s, while the calmest were 1993 and 2011 at 3.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.7°C | 25.6°C | 26.9°C | 27.6°C | 26.9°C | +1.2°C |
| Avg High | 33.8°C | 33.3°C | 34.8°C | 35.3°C | 34.3°C | +0.5°C |
| Avg Low | 17.7°C | 17.8°C | 18.9°C | 19.9°C | 19.5°C | +1.8°C |
| Avg Rain | 13 mm | 22 mm | 17 mm | 14 mm | 21 mm | +8 mm |
January temperatures in Port Augusta have risen by about 0.6°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 10.8°C (1983) to a record high of 47.7°C (2019).
Rainfall in January is about average for rainfall, averaging 17 mm, with a wettest year of 94 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.7°C per decade, narrowing the gap between day and night.
A good time to visit Port Augusta
January is a good time to visit Port Augusta, with days averaging 34.3°C and nights around 18.7°C (mean 26.5°C, warmer than Port Augusta's yearly average) and low rainfall. November and March are marginally more temperate, but January still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 35.8°C | 27.7°C | 19.6°C | 42.7°C | 16.3°C | 2 mm | 35% | 4.2 m/s | 8.4 |
| 2024 | 35.1°C | 27.9°C | 20.6°C | 45.5°C | 14.2°C | 26 mm | 42% | 3.8 m/s | 7.6 |
| 2023 | 34.8°C | 27.2°C | 19.6°C | 43.2°C | 13.9°C | 22 mm | 42% | 4 m/s | 7.6 |
| 2022 | 33.3°C | 26.8°C | 20.3°C | 41.4°C | 15.4°C | 28 mm | 50% | 4.1 m/s | 7.3 |
| 2021 | 32.7°C | 25.5°C | 18.2°C | 42.7°C | 13.6°C | 40 mm | 44% | 4.3 m/s | 8 |
| 2020 | 33.8°C | 26.3°C | 18.8°C | 44.9°C | 13.2°C | 7 mm | 40% | 4.5 m/s | 8 |
| 2019 | 37.9°C | 29.7°C | 21.5°C | 47.7°C | 16.3°C | 0 mm | 34% | 4.2 m/s | 8.1 |
| 2018 | 36.4°C | 28.7°C | 21.0°C | 45.2°C | 15.2°C | 0 mm | 35% | 4.3 m/s | 7.5 |
| 2017 | 35.8°C | 28.0°C | 20.3°C | 43.5°C | 15.2°C | 0 mm | 39% | 4 m/s | 7.6 |
| 2016 | 34.2°C | 27.0°C | 19.8°C | 42.6°C | 14.3°C | 29 mm | 42% | 4.1 m/s | 7.7 |
| 2015 | 32.6°C | 25.6°C | 18.5°C | 43.6°C | 13.6°C | 49 mm | 49% | 4.1 m/s | 7.7 |
| 2014 | 36.5°C | 28.4°C | 20.3°C | 44.5°C | 13.2°C | 18 mm | 36% | 4.1 m/s | 8 |
| 2013 | 35.0°C | 26.8°C | 18.7°C | 46.1°C | 13.5°C | 2 mm | 36% | 4.6 m/s | 8.5 |
| 2012 | 33.5°C | 26.4°C | 19.4°C | 42.5°C | 13.1°C | 29 mm | 43% | 4.1 m/s | 7.6 |
| 2011 | 35.6°C | 27.9°C | 20.3°C | 46.5°C | 15.2°C | 6 mm | 41% | 3.7 m/s | 8 |
| 2010 | 35.2°C | 27.3°C | 19.4°C | 43.2°C | 13.3°C | 10 mm | 35% | 4 m/s | 8.5 |
| 2009 | 36.0°C | 27.4°C | 18.8°C | 45.1°C | 11.9°C | 11 mm | 35% | 3.9 m/s | 9 |
| 2008 | 35.4°C | 27.2°C | 19.0°C | 42.9°C | 15.1°C | 3 mm | 39% | 4.3 m/s | 8.7 |
| 2007 🌧️ | 33.2°C | 25.9°C | 18.6°C | 42.4°C | 13.1°C | 94 mm | 48% | 4.1 m/s | 7.8 |
| 2006 | 37.1°C | 29.4°C | 21.7°C | 45.2°C | 16.7°C | 8 mm | 40% | 4.4 m/s | 7.6 |
| 2005 | 33.9°C | 25.9°C | 17.9°C | 43.2°C | 12.4°C | 18 mm | 41% | 4.3 m/s | 7.9 |
| 2004 | 31.4°C | 24.0°C | 16.5°C | 44.2°C | 12.6°C | 5 mm | 46% | 4.5 m/s | 8.2 |
| 2003 | 35.7°C | 27.3°C | 18.9°C | 46.0°C | 13.1°C | 8 mm | 32% | 4.4 m/s | 8.2 |
| 2002 | 32.3°C | 24.5°C | 16.7°C | 42.3°C | 11.9°C | 8 mm | 41% | 3.9 m/s | 8 |
| 2001 🔥 | 39.3°C | 31.0°C | 22.7°C | 46.5°C | 17.1°C | 13 mm | 33% | 4.1 m/s | 8.4 |
| 2000 | 33.4°C | 25.9°C | 18.5°C | 44.1°C | 11.2°C | 1 mm | 35% | 4.1 m/s | 8 |
| 1999 | 36.6°C | 28.5°C | 20.4°C | 43.9°C | 14.5°C | 20 mm | 39% | 4.3 m/s | 8.3 |
| 1998 | 33.1°C | 25.7°C | 18.4°C | 44.2°C | 13.7°C | 13 mm | 45% | 4.2 m/s | 7.9 |
| 1997 | 34.2°C | 26.2°C | 18.2°C | 39.8°C | 13.6°C | 41 mm | 39% | 4.2 m/s | 8.1 |
| 1996 | 32.4°C | 24.2°C | 15.9°C | 44.7°C | 10.8°C | 2 mm | 42% | 4.6 m/s | 8.5 |
| 1995 | 34.0°C | 26.3°C | 18.6°C | 41.3°C | 12.3°C | 45 mm | 42% | 3.9 m/s | 7.9 |
| 1994 | 32.0°C | 24.0°C | 15.9°C | 43.1°C | 12.2°C | 5 mm | 43% | 4.5 m/s | 8.6 |
| 1993 | 32.3°C | 24.9°C | 17.4°C | 40.5°C | 12.3°C | 64 mm | 55% | 3.7 m/s | 7.9 |
| 1992 ❄️ | 29.6°C | 22.5°C | 15.5°C | 40.5°C | 11.3°C | 4 mm | 46% | 4.6 m/s | 8.2 |
| 1991 | 35.5°C | 27.4°C | 19.3°C | 44.2°C | 14.1°C | 12 mm | 39% | 4 m/s | 8.4 |
| 1990 | 33.6°C | 25.9°C | 18.2°C | 46.2°C | 13.3°C | 19 mm | 43% | 4.4 m/s | 7.7 |
| 1989 | 32.4°C | 24.8°C | 17.2°C | 39.6°C | 12.0°C | 1 mm | 38% | 4.7 m/s | 8.3 |
| 1988 | 35.4°C | 26.9°C | 18.4°C | 45.5°C | 13.4°C | 4 mm | 34% | 4.3 m/s | 8.2 |
| 1987 | 32.0°C | 23.9°C | 15.8°C | 40.9°C | 12.4°C | 38 mm | 42% | 4.1 m/s | 8.1 |
| 1986 | 32.9°C | 24.3°C | 15.7°C | 43.4°C | 11.2°C | 0 mm | 36% | 4.3 m/s | 8.8 |
| 1985 | 33.8°C | 25.7°C | 17.6°C | 43.3°C | 13.3°C | 5 mm | 36% | 4.2 m/s | 7.6 |
| 1984 | 31.9°C | 24.6°C | 17.2°C | 42.1°C | 12.5°C | 14 mm | 43% | 4.4 m/s | 8 |
| 1983 | 33.2°C | 25.0°C | 16.7°C | 43.7°C | 10.8°C | 1 mm | 35% | 4.1 m/s | — |
| 1982 | 35.6°C | 27.5°C | 19.4°C | 45.8°C | 14.3°C | 7 mm | 35% | 4.2 m/s | — |
| 1981 | 36.9°C | 29.0°C | 21.0°C | 43.6°C | 15.9°C | 44 mm | 36% | 4.1 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 34.3°C with lows near 18.7°C (mean 26.5°C), based on 45 years of NASA POWER data.
January averages 17 mm of rainfall in Port Augusta, about average for rainfall. The wettest on record was 94 mm in 2007.
The hottest January reached 47.7°C in 2019. The coldest dipped to 10.8°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.6°C. Daytime highs moved from 34.3°C to 34.3°C and overnight lows from 18.4°C to 19.7°C over the same span.
January is one of the warmer months of the year in Port Augusta and about average for rainfall, so plan for around 34.3°C daytime highs and 18.7°C at night.
Not quite — January is the 12th coolest month in Port Augusta, averaging 26.5°C.
For January in Port Augusta, pack light, breathable clothing and sun protection, with typical highs of 34.3°C and lows of 18.7°C.
Relative humidity in January averages 40% — relatively dry.
Average wind speed in January is 4.2 m/s. The windiest January on record averaged 4.7 m/s (1989).
The wettest January on record was 2007 with 94 mm. On average, January sees 17 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 Augusta behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
