January is one of the warmer months of the year in Kalgoorlie, with average highs near 36.2°C and lows around 18.3°C (mean 27.3°C). It is about average for rainfall, averaging 33 mm of rainfall and 35% relative humidity across the period.
January is one of the warmer months of the year in Kalgoorlie. Across 45 years of records, the warmest Januarys in Kalgoorlie were 2001 and 2025 — when the month averaged 30.3°C — while the coldest was 2000 at 24.8°C. Typical January days reach 36.2°C with nights near 18.3°C. The long-term trend is warming, about 0.2°C per decade.
January is about average for rainfall in Kalgoorlie, averaging 33 mm of rainfall. The wettest January on record was 2014 with 169 mm, while the driest were 1996 and 1998 at 0 mm.
Relative humidity in Kalgoorlie during January averages 35%. The most humid January was 2014 at 49%, and the least humid was 1998 at 26%.
January receives about 8.1 kWh/m²/day of solar energy in Kalgoorlie. The sunniest January was 1994 at 9.2 kWh/m²/day, and the cloudiest were 1990, 2006 and 2018 at 6.9.
Average wind speed in Kalgoorlie during January is 4.1 m/s. The windiest January was 1999 at 4.6 m/s, while the calmest were 2013, 2016 and 2017, among others at 3.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.8°C | 27.3°C | 27.2°C | 27.3°C | 27.8°C | +1°C |
| Avg High | 35.8°C | 36.4°C | 36.2°C | 36.0°C | 36.7°C | +0.9°C |
| Avg Low | 17.7°C | 18.2°C | 18.2°C | 18.5°C | 18.8°C | +1.1°C |
| Avg Rain | 22 mm | 16 mm | 48 mm | 60 mm | 10 mm | -12 mm |
January temperatures in Kalgoorlie have risen by about 0.8°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 8.4°C (1990) to a record high of 47.4°C (2019).
Rainfall in January is about average for rainfall, averaging 33 mm, with a wettest year of 169 mm.
A good time to visit Kalgoorlie
January is a good time to visit Kalgoorlie, with days averaging 36.2°C and nights around 18.3°C (mean 27.3°C, warmer than Kalgoorlie's yearly average) and moderate 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 | 39.4°C | 30.3°C | 21.3°C | 47.4°C | 14.4°C | 7 mm | 30% | 4.2 m/s | 8.1 |
| 2024 | 37.4°C | 28.5°C | 19.5°C | 45.0°C | 12.9°C | 21 mm | 38% | 4.2 m/s | 7.4 |
| 2023 | 36.0°C | 26.7°C | 17.5°C | 43.1°C | 13.3°C | 3 mm | 35% | 4.3 m/s | 8 |
| 2022 | 37.2°C | 27.7°C | 18.2°C | 42.9°C | 12.7°C | 3 mm | 33% | 4.2 m/s | 8.9 |
| 2021 | 34.2°C | 25.8°C | 17.4°C | 41.8°C | 12.2°C | 9 mm | 36% | 4.5 m/s | 7.9 |
| 2020 | 36.1°C | 27.5°C | 18.9°C | 45.6°C | 11.4°C | 21 mm | 34% | 4 m/s | 8.2 |
| 2019 | 38.2°C | 28.5°C | 18.8°C | 47.4°C | 14.3°C | 6 mm | 32% | 4.1 m/s | 8.7 |
| 2018 | 35.6°C | 27.5°C | 19.3°C | 45.0°C | 12.7°C | 49 mm | 40% | 4.3 m/s | 6.9 |
| 2017 | 35.2°C | 26.3°C | 17.4°C | 41.8°C | 11.6°C | 90 mm | 38% | 3.8 m/s | 8 |
| 2016 | 34.0°C | 26.4°C | 18.7°C | 41.6°C | 13.5°C | 113 mm | 44% | 3.8 m/s | 7 |
| 2015 | 37.1°C | 27.7°C | 18.3°C | 47.2°C | 12.0°C | 1 mm | 30% | 4.4 m/s | 8.4 |
| 2014 🌧️ | 34.7°C | 26.1°C | 17.6°C | 44.5°C | 13.5°C | 169 mm | 49% | 4.3 m/s | 7.5 |
| 2013 | 36.9°C | 28.0°C | 19.2°C | 46.7°C | 12.2°C | 60 mm | 37% | 3.8 m/s | 7.7 |
| 2012 | 33.1°C | 25.4°C | 17.7°C | 40.6°C | 12.0°C | 47 mm | 48% | 4 m/s | 7.3 |
| 2011 | 36.7°C | 28.2°C | 19.6°C | 45.5°C | 12.8°C | 60 mm | 42% | 3.8 m/s | 7.5 |
| 2010 | 38.7°C | 28.8°C | 18.8°C | 45.9°C | 14.5°C | 8 mm | 28% | 4.1 m/s | 8.9 |
| 2009 | 38.2°C | 29.0°C | 19.8°C | 45.9°C | 16.1°C | 59 mm | 37% | 4.3 m/s | 8 |
| 2008 | 38.5°C | 29.1°C | 19.6°C | 45.1°C | 14.8°C | 11 mm | 33% | 4.3 m/s | 8.3 |
| 2007 | 34.4°C | 25.3°C | 16.2°C | 44.5°C | 9.9°C | 52 mm | 38% | 3.9 m/s | 7.9 |
| 2006 | 34.6°C | 26.4°C | 18.1°C | 44.5°C | 11.0°C | 66 mm | 48% | 4.4 m/s | 6.9 |
| 2005 | 36.7°C | 26.7°C | 16.8°C | 43.3°C | 11.8°C | 6 mm | 30% | 3.9 m/s | 8.6 |
| 2004 | 37.2°C | 27.8°C | 18.4°C | 44.1°C | 12.8°C | 37 mm | 39% | 4 m/s | 8 |
| 2003 | 35.5°C | 26.3°C | 17.1°C | 43.0°C | 10.8°C | 28 mm | 34% | 4.3 m/s | 7.9 |
| 2002 | 35.2°C | 26.2°C | 17.1°C | 41.9°C | 11.1°C | 21 mm | 34% | 3.8 m/s | 7.9 |
| 2001 🔥 | 38.9°C | 30.3°C | 21.6°C | 46.7°C | 12.6°C | 37 mm | 33% | 3.8 m/s | 7.6 |
| 2000 ❄️ | 32.6°C | 24.8°C | 17.1°C | 38.6°C | 12.1°C | 164 mm | 48% | 3.8 m/s | 7.2 |
| 1999 | 38.0°C | 28.8°C | 19.7°C | 44.2°C | 13.2°C | 19 mm | 38% | 4.6 m/s | 7.8 |
| 1998 | 38.3°C | 28.5°C | 18.8°C | 44.7°C | 13.3°C | 0 mm | 26% | 4 m/s | 9 |
| 1997 | 35.1°C | 26.1°C | 17.0°C | 43.1°C | 11.0°C | 18 mm | 35% | 4.2 m/s | 8.2 |
| 1996 | 35.7°C | 26.0°C | 16.3°C | 42.3°C | 10.5°C | 0 mm | 31% | 4.3 m/s | 8.7 |
| 1995 | 36.3°C | 27.6°C | 19.0°C | 42.3°C | 13.4°C | 29 mm | 39% | 4.4 m/s | 8 |
| 1994 | 36.9°C | 27.0°C | 17.1°C | 46.3°C | 12.9°C | 3 mm | 30% | 4.2 m/s | 9.2 |
| 1993 | 38.0°C | 28.8°C | 19.5°C | 44.8°C | 12.9°C | 8 mm | 29% | 3.8 m/s | 8.6 |
| 1992 | 33.9°C | 25.6°C | 17.2°C | 41.4°C | 12.6°C | 3 mm | 35% | 3.8 m/s | 8.2 |
| 1991 | 37.5°C | 28.1°C | 18.7°C | 45.9°C | 12.0°C | 7 mm | 30% | 4.2 m/s | 8.5 |
| 1990 | 34.6°C | 26.6°C | 18.6°C | 45.8°C | 8.4°C | 69 mm | 43% | 4.3 m/s | 6.9 |
| 1989 | 33.6°C | 24.9°C | 16.1°C | 44.3°C | 10.2°C | 5 mm | 36% | 4.2 m/s | 8.3 |
| 1988 | 35.8°C | 26.7°C | 17.7°C | 41.9°C | 9.4°C | 5 mm | 29% | 3.8 m/s | 8.5 |
| 1987 | 35.4°C | 26.2°C | 17.1°C | 42.8°C | 12.2°C | 117 mm | 37% | 4 m/s | 8.4 |
| 1986 | 37.1°C | 27.9°C | 18.7°C | 43.6°C | 12.8°C | 7 mm | 26% | 4 m/s | 8.3 |
| 1985 | 37.8°C | 28.1°C | 18.4°C | 44.7°C | 13.1°C | 2 mm | 28% | 4.2 m/s | 8.6 |
| 1984 | 35.5°C | 26.4°C | 17.4°C | 41.8°C | 12.3°C | 2 mm | 32% | 4 m/s | 8.8 |
| 1983 | 36.4°C | 27.6°C | 18.8°C | 42.8°C | 11.5°C | 7 mm | 28% | 3.8 m/s | — |
| 1982 | 35.3°C | 26.7°C | 18.1°C | 43.1°C | 12.0°C | 26 mm | 35% | 3.9 m/s | — |
| 1981 | 35.5°C | 26.3°C | 17.1°C | 42.9°C | 10.9°C | 28 mm | 37% | 4.5 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 36.2°C with lows near 18.3°C (mean 27.3°C), based on 45 years of NASA POWER data.
January averages 33 mm of rainfall in Kalgoorlie, about average for rainfall. The wettest on record was 169 mm in 2014.
The hottest January reached 47.4°C in 2019. The coldest dipped to 8.4°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.8°C. Daytime highs moved from 36.1°C to 36.8°C and overnight lows from 18°C to 18.8°C over the same span.
January is one of the warmer months of the year in Kalgoorlie and about average for rainfall, so plan for around 36.2°C daytime highs and 18.3°C at night.
Not quite — January is the 12th coolest month in Kalgoorlie, averaging 27.3°C.
For January in Kalgoorlie, pack light, breathable clothing and sun protection, with typical highs of 36.2°C and lows of 18.3°C.
Relative humidity in January averages 35% — relatively dry.
Average wind speed in January is 4.1 m/s. The windiest January on record averaged 4.6 m/s (1999).
The wettest January on record was 2014 with 169 mm. On average, January 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 Kalgoorlie 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.
