January is one of the warmer months of the year in Wallaroo, with average highs near 27.2°C and lows around 18.5°C (mean 22.9°C). It is one of the drier months, averaging 14 mm of rainfall and 56% relative humidity across the period.
January is one of the warmer months of the year in Wallaroo. Across 45 years of records, the warmest January in Wallaroo was 2001 — when the month averaged 26.1°C — while the coldest were 1987 and 1992 at 19.8°C. Typical January days reach 27.2°C with nights near 18.5°C. The long-term trend is warming, about 0.5°C per decade.
January is one of the drier months in Wallaroo, averaging 14 mm of rainfall. The wettest January on record was 2015 with 62 mm, while the driest were 2017, 2018 and 2019 at 0 mm.
Relative humidity in Wallaroo during January averages 56%. The most humid January was 1993 at 66%, and the least humid was 2001 at 49%.
January receives about 7.9 kWh/m²/day of solar energy in Wallaroo. The sunniest January was 2009 at 8.8 kWh/m²/day, and the cloudiest were 2018 and 2022 at 7.3.
Average wind speed in Wallaroo during January is 5.4 m/s. The windiest January was 1996 at 6.1 m/s, while the calmest was 1993 at 4.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.2°C | 22.1°C | 23.1°C | 23.9°C | 23.3°C | +1.1°C |
| Avg High | 26.8°C | 26.4°C | 27.5°C | 28.2°C | 27.5°C | +0.7°C |
| Avg Low | 17.6°C | 17.7°C | 18.6°C | 19.6°C | 19.2°C | +1.6°C |
| Avg Rain | 10 mm | 19 mm | 13 mm | 15 mm | 14 mm | +4 mm |
January temperatures in Wallaroo have risen by about 0.6°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 13.2°C (1983) to a record high of 41.7°C (2019).
Rainfall in January is one of the drier months, averaging 14 mm, with a wettest year of 62 mm.
One of the best times to visit Wallaroo
January is one of the best times to visit Wallaroo. Expect days averaging 27.2°C and nights around 18.5°C (mean 22.9°C) — warmer than Wallaroo'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 | 28.6°C | 24.2°C | 19.7°C | 35.7°C | 16.6°C | 1 mm | 53% | 5.3 m/s | 8.2 |
| 2024 | 27.9°C | 23.7°C | 19.5°C | 38.4°C | 16.3°C | 23 mm | 59% | 5 m/s | 7.5 |
| 2023 | 27.6°C | 23.3°C | 18.9°C | 35.0°C | 15.9°C | 18 mm | 58% | 5.5 m/s | 7.7 |
| 2022 | 27.0°C | 23.5°C | 20.0°C | 33.2°C | 16.3°C | 22 mm | 64% | 5.3 m/s | 7.3 |
| 2021 | 26.7°C | 22.5°C | 18.3°C | 37.5°C | 15.8°C | 20 mm | 57% | 5.5 m/s | 7.8 |
| 2020 | 27.0°C | 22.9°C | 18.8°C | 38.5°C | 16.1°C | 2 mm | 55% | 5.4 m/s | 7.8 |
| 2019 | 29.8°C | 25.2°C | 20.5°C | 41.7°C | 17.4°C | 0 mm | 51% | 5.1 m/s | 7.9 |
| 2018 | 29.0°C | 24.7°C | 20.4°C | 36.7°C | 17.0°C | 0 mm | 52% | 5.6 m/s | 7.3 |
| 2017 | 28.5°C | 24.0°C | 19.5°C | 37.5°C | 16.1°C | 0 mm | 55% | 5.2 m/s | 7.6 |
| 2016 | 27.7°C | 23.8°C | 19.9°C | 34.7°C | 16.2°C | 18 mm | 57% | 5.6 m/s | 7.7 |
| 2015 🌧️ | 26.1°C | 22.4°C | 18.8°C | 36.6°C | 15.4°C | 62 mm | 61% | 5.6 m/s | 7.4 |
| 2014 | 29.2°C | 24.5°C | 19.9°C | 39.3°C | 15.3°C | 8 mm | 53% | 5.6 m/s | 8 |
| 2013 | 27.6°C | 23.2°C | 18.7°C | 40.9°C | 15.1°C | 8 mm | 53% | 5.6 m/s | 8.2 |
| 2012 | 27.8°C | 23.7°C | 19.5°C | 36.0°C | 15.8°C | 17 mm | 56% | 5.7 m/s | 7.8 |
| 2011 | 27.8°C | 23.6°C | 19.5°C | 38.7°C | 16.0°C | 17 mm | 58% | 4.9 m/s | 7.9 |
| 2010 | 28.1°C | 23.7°C | 19.3°C | 36.6°C | 15.6°C | 16 mm | 52% | 5.1 m/s | 8.4 |
| 2009 | 28.6°C | 23.9°C | 19.1°C | 39.3°C | 14.7°C | 6 mm | 51% | 5.1 m/s | 8.8 |
| 2008 | 27.8°C | 23.1°C | 18.4°C | 36.9°C | 15.8°C | 9 mm | 58% | 5.8 m/s | 8.6 |
| 2007 | 27.2°C | 23.2°C | 19.2°C | 36.3°C | 16.2°C | 43 mm | 60% | 5.3 m/s | 7.6 |
| 2006 | 28.7°C | 24.2°C | 19.8°C | 39.7°C | 16.2°C | 14 mm | 59% | 5.7 m/s | 7.5 |
| 2005 | 26.8°C | 22.5°C | 18.1°C | 36.6°C | 14.5°C | 10 mm | 57% | 5.4 m/s | 7.6 |
| 2004 | 23.9°C | 20.4°C | 16.9°C | 34.2°C | 14.4°C | 7 mm | 61% | 5.6 m/s | 8 |
| 2003 | 28.7°C | 23.6°C | 18.5°C | 39.6°C | 15.0°C | 13 mm | 51% | 5.8 m/s | 7.9 |
| 2002 | 25.4°C | 21.1°C | 16.7°C | 35.2°C | 14.1°C | 16 mm | 59% | 5.4 m/s | 7.7 |
| 2001 🔥 | 31.0°C | 26.1°C | 21.2°C | 40.1°C | 17.3°C | 8 mm | 49% | 5.2 m/s | 8.3 |
| 2000 | 26.7°C | 22.6°C | 18.5°C | 36.6°C | 13.6°C | 4 mm | 54% | 5.6 m/s | 7.7 |
| 1999 | 29.1°C | 24.4°C | 19.7°C | 37.0°C | 16.0°C | 13 mm | 56% | 5.5 m/s | 8 |
| 1998 | 26.9°C | 22.5°C | 18.1°C | 34.1°C | 15.4°C | 10 mm | 59% | 5.6 m/s | 8.1 |
| 1997 | 27.4°C | 22.9°C | 18.4°C | 34.1°C | 14.9°C | 34 mm | 56% | 5.4 m/s | 7.9 |
| 1996 | 25.4°C | 21.0°C | 16.5°C | 37.1°C | 14.4°C | 7 mm | 59% | 6.1 m/s | 8.1 |
| 1995 | 26.7°C | 22.2°C | 17.8°C | 33.3°C | 13.7°C | 34 mm | 58% | 5.2 m/s | 7.8 |
| 1994 | 24.7°C | 20.6°C | 16.5°C | 35.5°C | 13.6°C | 8 mm | 60% | 6 m/s | 8.4 |
| 1993 | 26.2°C | 22.0°C | 17.8°C | 35.3°C | 13.9°C | 60 mm | 66% | 4.6 m/s | 7.5 |
| 1992 | 23.6°C | 19.8°C | 15.9°C | 33.5°C | 13.2°C | 5 mm | 61% | 5.7 m/s | 8 |
| 1991 | 27.2°C | 22.9°C | 18.6°C | 36.4°C | 15.1°C | 12 mm | 57% | 5.5 m/s | 8.3 |
| 1990 | 26.8°C | 22.3°C | 17.8°C | 34.6°C | 14.1°C | 7 mm | 55% | 5.6 m/s | 7.8 |
| 1989 | 26.2°C | 21.9°C | 17.7°C | 34.1°C | 13.9°C | 1 mm | 54% | 5.9 m/s | 8.3 |
| 1988 | 27.9°C | 23.1°C | 18.2°C | 37.3°C | 15.2°C | 7 mm | 52% | 5.3 m/s | 7.9 |
| 1987 ❄️ | 24.0°C | 19.8°C | 15.6°C | 33.0°C | 13.3°C | 30 mm | 58% | 5.1 m/s | 8 |
| 1986 | 25.6°C | 20.9°C | 16.2°C | 36.4°C | 14.2°C | 3 mm | 55% | 5.5 m/s | 8.7 |
| 1985 | 26.9°C | 22.2°C | 17.4°C | 36.2°C | 14.4°C | 4 mm | 53% | 5.3 m/s | 8.2 |
| 1984 | 25.7°C | 21.6°C | 17.4°C | 34.3°C | 15.1°C | 7 mm | 57% | 5.7 m/s | 7.8 |
| 1983 | 26.3°C | 21.7°C | 17.2°C | 36.8°C | 13.2°C | 6 mm | 52% | 5.4 m/s | — |
| 1982 | 28.4°C | 23.6°C | 18.9°C | 38.7°C | 15.7°C | 12 mm | 52% | 5.2 m/s | — |
| 1981 | 30.0°C | 24.9°C | 19.8°C | 38.1°C | 16.7°C | 25 mm | 53% | 5.5 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 27.2°C with lows near 18.5°C (mean 22.9°C), based on 45 years of NASA POWER data.
January averages 14 mm of rainfall in Wallaroo, one of the drier months. The wettest on record was 62 mm in 2015.
The hottest January reached 41.7°C in 2019. The coldest dipped to 13.2°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 27.5°C to 27.6°C and overnight lows from 18.1°C to 19.3°C over the same span.
January is one of the warmer months of the year in Wallaroo and one of the drier months, so plan for around 27.2°C daytime highs and 18.5°C at night.
Not quite — January is the 11th coolest month in Wallaroo, averaging 22.9°C.
For January in Wallaroo, pack light layers you can adjust through the day, with typical highs of 27.2°C and lows of 18.5°C.
Relative humidity in January averages 56% — moderately humid.
Average wind speed in January is 5.4 m/s. The windiest January on record averaged 6.1 m/s (1996).
The wettest January on record was 2015 with 62 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 Wallaroo 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.
