January is one of the warmer months of the year in Port Lincoln, with average highs near 25.7°C and lows around 16.8°C (mean 21.3°C). It is one of the drier months, averaging 14 mm of rainfall and 60% relative humidity across the period.
January is one of the warmer months of the year in Port Lincoln. Across 45 years of records, the warmest January in Port Lincoln was 2001 — when the month averaged 23.7°C — while the coldest was 2004 at 18.7°C. Typical January days reach 25.7°C with nights near 16.8°C. The long-term trend is warming, about 0.3°C per decade.
January is one of the drier months in Port Lincoln, averaging 14 mm of rainfall. The wettest January on record was 1995 with 59 mm, while the driest were 2018 and 2019 at 1 mm.
Relative humidity in Port Lincoln during January averages 60%. The most humid January was 2022 at 67%, and the least humid was 1982 at 55%.
January receives about 7.5 kWh/m²/day of solar energy in Port Lincoln. The sunniest January was 2009 at 8.4 kWh/m²/day, and the cloudiest was 2022 at 6.7.
Average wind speed in Port Lincoln during January is 5.6 m/s. The windiest January was 1994 at 6.3 m/s, while the calmest was 1993 at 4.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.9°C | 20.6°C | 21.2°C | 22.1°C | 21.4°C | +0.5°C |
| Avg High | 25.6°C | 25.0°C | 25.7°C | 26.5°C | 25.7°C | +0.1°C |
| Avg Low | 16.2°C | 16.2°C | 16.8°C | 17.6°C | 17.1°C | +0.9°C |
| Avg Rain | 8 mm | 17 mm | 14 mm | 13 mm | 20 mm | +12 mm |
January temperatures in Port Lincoln have stayed relatively stable across the record.
January has ranged from a record low of 12.1°C (1987) to a record high of 40.9°C (2019).
Rainfall in January is one of the drier months, averaging 14 mm, with a wettest year of 59 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Port Lincoln
January is one of the best times to visit Port Lincoln. Expect days averaging 25.7°C and nights around 16.8°C (mean 21.3°C) — warmer than Port Lincoln's yearly average — with low rainfall (14 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 | 27.2°C | 22.7°C | 18.1°C | 35.6°C | 15.5°C | 2 mm | 58% | 5.3 m/s | 7.9 |
| 2024 | 25.2°C | 21.0°C | 16.8°C | 34.0°C | 14.7°C | 47 mm | 66% | 5.2 m/s | 7.3 |
| 2023 | 25.5°C | 21.1°C | 16.7°C | 36.7°C | 15.0°C | 18 mm | 63% | 5.5 m/s | 7.5 |
| 2022 | 25.4°C | 21.6°C | 17.7°C | 32.1°C | 15.2°C | 21 mm | 67% | 5.3 m/s | 6.7 |
| 2021 | 24.6°C | 20.5°C | 16.5°C | 37.9°C | 14.2°C | 26 mm | 61% | 5.6 m/s | 7.3 |
| 2020 | 26.1°C | 21.5°C | 16.9°C | 40.8°C | 13.9°C | 7 mm | 58% | 5.5 m/s | 7.5 |
| 2019 | 28.1°C | 23.1°C | 18.2°C | 40.9°C | 15.6°C | 1 mm | 57% | 5.2 m/s | 7.8 |
| 2018 | 27.3°C | 22.9°C | 18.5°C | 38.5°C | 16.1°C | 1 mm | 56% | 5.7 m/s | 7.4 |
| 2017 | 26.9°C | 22.0°C | 17.1°C | 37.9°C | 15.2°C | 3 mm | 59% | 5.3 m/s | 7.5 |
| 2016 | 26.0°C | 21.9°C | 17.7°C | 34.7°C | 15.1°C | 19 mm | 61% | 5.8 m/s | 7.7 |
| 2015 | 24.2°C | 20.5°C | 16.7°C | 36.8°C | 14.3°C | 33 mm | 63% | 6 m/s | 7.1 |
| 2014 | 27.0°C | 22.5°C | 17.9°C | 39.4°C | 14.7°C | 13 mm | 57% | 5.8 m/s | 7.6 |
| 2013 | 26.3°C | 21.7°C | 17.2°C | 37.3°C | 15.4°C | 10 mm | 56% | 5.6 m/s | 7.6 |
| 2012 | 26.4°C | 22.0°C | 17.7°C | 39.5°C | 15.2°C | 9 mm | 59% | 6.1 m/s | 7.5 |
| 2011 | 26.1°C | 21.7°C | 17.3°C | 37.8°C | 14.6°C | 9 mm | 62% | 5.2 m/s | 7.6 |
| 2010 | 26.8°C | 22.2°C | 17.6°C | 38.8°C | 14.9°C | 33 mm | 56% | 5 m/s | 7.8 |
| 2009 | 27.1°C | 22.0°C | 16.8°C | 39.9°C | 13.9°C | 3 mm | 57% | 5.3 m/s | 8.4 |
| 2008 | 25.4°C | 21.1°C | 16.7°C | 36.5°C | 15.2°C | 7 mm | 64% | 5.9 m/s | 8 |
| 2007 | 26.4°C | 21.9°C | 17.5°C | 35.8°C | 15.0°C | 25 mm | 62% | 5.5 m/s | 7.5 |
| 2006 | 26.0°C | 21.8°C | 17.5°C | 39.9°C | 14.0°C | 38 mm | 65% | 5.9 m/s | 6.9 |
| 2005 | 25.0°C | 20.6°C | 16.2°C | 35.6°C | 14.1°C | 5 mm | 61% | 5.4 m/s | 7.4 |
| 2004 ❄️ | 22.2°C | 18.7°C | 15.3°C | 33.5°C | 13.3°C | 9 mm | 64% | 5.4 m/s | 7.3 |
| 2003 | 26.3°C | 21.4°C | 16.4°C | 38.0°C | 13.4°C | 29 mm | 58% | 5.8 m/s | 7.6 |
| 2002 | 24.1°C | 19.7°C | 15.4°C | 36.7°C | 12.9°C | 8 mm | 62% | 5.5 m/s | 7.4 |
| 2001 🔥 | 28.8°C | 23.7°C | 18.6°C | 37.3°C | 15.9°C | 4 mm | 58% | 5.5 m/s | 7.4 |
| 2000 | 25.5°C | 21.3°C | 17.2°C | 38.0°C | 13.2°C | 9 mm | 58% | 5.8 m/s | 6.9 |
| 1999 | 26.9°C | 22.1°C | 17.3°C | 37.7°C | 15.0°C | 17 mm | 62% | 6.1 m/s | 7.6 |
| 1998 | 25.1°C | 20.8°C | 16.5°C | 35.1°C | 13.9°C | 7 mm | 62% | 5.7 m/s | 7.8 |
| 1997 | 26.2°C | 21.4°C | 16.7°C | 36.2°C | 13.8°C | 16 mm | 59% | 5.8 m/s | 7.4 |
| 1996 | 23.8°C | 19.4°C | 15.0°C | 36.7°C | 12.9°C | 6 mm | 62% | 6.1 m/s | 7.7 |
| 1995 🌧️ | 25.1°C | 20.6°C | 16.1°C | 34.2°C | 13.1°C | 59 mm | 66% | 5.6 m/s | 7.3 |
| 1994 | 23.6°C | 19.4°C | 15.3°C | 38.1°C | 13.6°C | 13 mm | 62% | 6.3 m/s | 7.4 |
| 1993 | 25.7°C | 21.2°C | 16.7°C | 37.0°C | 12.8°C | 28 mm | 67% | 4.7 m/s | 7 |
| 1992 | 23.0°C | 18.9°C | 14.9°C | 33.9°C | 12.6°C | 3 mm | 62% | 5.5 m/s | 7.3 |
| 1991 | 25.7°C | 21.3°C | 16.9°C | 38.2°C | 14.0°C | 8 mm | 63% | 5.8 m/s | 7.6 |
| 1990 | 25.0°C | 20.7°C | 16.4°C | 37.3°C | 14.0°C | 14 mm | 60% | 5.6 m/s | 7.2 |
| 1989 | 25.2°C | 20.7°C | 16.2°C | 35.6°C | 12.8°C | 3 mm | 59% | 6.1 m/s | 7.4 |
| 1988 | 26.7°C | 21.7°C | 16.7°C | 35.6°C | 14.1°C | 23 mm | 57% | 5.5 m/s | 7.3 |
| 1987 | 23.2°C | 18.8°C | 14.5°C | 36.4°C | 12.1°C | 11 mm | 60% | 5.5 m/s | 7.3 |
| 1986 | 24.6°C | 20.0°C | 15.4°C | 32.9°C | 12.8°C | 4 mm | 58% | 5.5 m/s | 7.9 |
| 1985 | 25.6°C | 20.9°C | 16.1°C | 37.8°C | 12.9°C | 3 mm | 57% | 5.3 m/s | 7 |
| 1984 | 24.1°C | 20.0°C | 15.9°C | 33.0°C | 14.1°C | 3 mm | 60% | 5.6 m/s | 7.4 |
| 1983 | 25.5°C | 20.7°C | 15.8°C | 38.2°C | 12.3°C | 4 mm | 56% | 5.3 m/s | — |
| 1982 | 27.6°C | 22.5°C | 17.4°C | 40.6°C | 15.0°C | 8 mm | 55% | 5.5 m/s | — |
| 1981 | 27.9°C | 22.8°C | 17.8°C | 37.8°C | 15.0°C | 12 mm | 58% | 6 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 25.7°C with lows near 16.8°C (mean 21.3°C), based on 45 years of NASA POWER data.
January averages 14 mm of rainfall in Port Lincoln, one of the drier months. The wettest on record was 59 mm in 1995.
The hottest January reached 40.9°C in 2019. The coldest dipped to 12.1°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have held steady by about 0°C — but days and nights have moved in opposite directions. Overnight lows rose from 16.6°C to 17.2°C while daytime highs eased from 26.1°C to 25.6°C, narrowing the gap between day and night.
January is one of the warmer months of the year in Port Lincoln and one of the drier months, so plan for around 25.7°C daytime highs and 16.8°C at night.
Not quite — January is the 11th coolest month in Port Lincoln, averaging 21.3°C.
For January in Port Lincoln, pack light layers you can adjust through the day, with typical highs of 25.7°C and lows of 16.8°C.
Relative humidity in January averages 60% — moderately humid.
Average wind speed in January is 5.6 m/s. The windiest January on record averaged 6.3 m/s (1994).
The wettest January on record was 1995 with 59 mm. On average, January sees 14 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 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.
