January is one of the warmer months of the year in Colac, with average highs near 23.2°C and lows around 13.7°C (mean 18.5°C). It is one of the drier months, averaging 49 mm of rainfall and 68% relative humidity across the period.
January is one of the warmer months of the year in Colac. Across 45 years of records, the warmest January in Colac was 2019 — when the month averaged 20.7°C — while the coldest was 1992 at 15.7°C. Typical January days reach 23.2°C with nights near 13.7°C. The long-term trend is warming, about 0.4°C per decade.
January is one of the drier months in Colac, averaging 49 mm of rainfall. The wettest January on record was 2011 with 147 mm, while the driest was 2019 at 4 mm.
Relative humidity in Colac during January averages 68%. The most humid January was 2011 at 75%, and the least humid was 1982 at 62%.
January receives about 6.8 kWh/m²/day of solar energy in Colac. The sunniest January was 2009 at 7.8 kWh/m²/day, and the cloudiest was 2002 at 6.2.
Average wind speed in Colac during January is 2.5 m/s. The windiest Januarys were 1994, 1996 and 2012, among others at 2.7 m/s, while the calmest were 1993 and 2011 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.0°C | 18.0°C | 18.5°C | 19.1°C | 19.1°C | +1.1°C |
| Avg High | 22.8°C | 22.6°C | 23.2°C | 23.9°C | 23.6°C | +0.8°C |
| Avg Low | 13.2°C | 13.4°C | 13.7°C | 14.2°C | 14.5°C | +1.3°C |
| Avg Rain | 46 mm | 55 mm | 37 mm | 49 mm | 68 mm | +23 mm |
January temperatures in Colac have risen by about 0.7°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 8.1°C (1983) to a record high of 39°C (1982).
Rainfall in January is one of the drier months, averaging 49 mm, with a wettest year of 147 mm.
One of the best times to visit Colac
January is one of the best times to visit Colac. Expect days averaging 23.2°C and nights around 13.7°C (mean 18.5°C) — warmer than Colac's yearly average — with moderate rainfall (49 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 | 24.3°C | 19.6°C | 14.9°C | 35.3°C | 11.0°C | 23 mm | 67% | 2.4 m/s | 7 |
| 2024 | 22.8°C | 18.7°C | 14.6°C | 28.7°C | 12.9°C | 73 mm | 75% | 2.4 m/s | 6.6 |
| 2023 | 23.8°C | 19.1°C | 14.4°C | 34.4°C | 11.4°C | 26 mm | 69% | 2.2 m/s | 7.2 |
| 2022 | 24.8°C | 20.4°C | 15.9°C | 32.0°C | 12.2°C | 118 mm | 74% | 2.5 m/s | 6.6 |
| 2021 | 22.1°C | 17.8°C | 13.5°C | 31.7°C | 10.6°C | 113 mm | 72% | 2.6 m/s | 6.7 |
| 2020 | 24.0°C | 18.8°C | 13.6°C | 36.3°C | 11.7°C | 56 mm | 67% | 2.4 m/s | 6.3 |
| 2019 🔥 | 26.2°C | 20.7°C | 15.2°C | 34.1°C | 12.7°C | 4 mm | 63% | 2.2 m/s | 7.5 |
| 2018 | 25.3°C | 20.0°C | 14.8°C | 36.9°C | 12.0°C | 31 mm | 65% | 2.3 m/s | 7.3 |
| 2017 | 24.0°C | 19.1°C | 14.1°C | 33.6°C | 11.9°C | 42 mm | 66% | 2.3 m/s | 7 |
| 2016 | 23.4°C | 19.1°C | 14.7°C | 36.4°C | 12.0°C | 49 mm | 69% | 2.3 m/s | 6.7 |
| 2015 | 22.2°C | 17.9°C | 13.6°C | 34.6°C | 10.4°C | 97 mm | 71% | 2.6 m/s | 6.4 |
| 2014 | 24.5°C | 19.4°C | 14.2°C | 38.3°C | 10.9°C | 28 mm | 64% | 2.6 m/s | 7.2 |
| 2013 | 23.7°C | 18.6°C | 13.5°C | 36.5°C | 11.0°C | 26 mm | 63% | 2.4 m/s | 7.3 |
| 2012 | 24.0°C | 19.3°C | 14.6°C | 37.5°C | 11.3°C | 39 mm | 66% | 2.7 m/s | 7 |
| 2011 🌧️ | 22.4°C | 18.4°C | 14.3°C | 31.0°C | 11.6°C | 147 mm | 75% | 2.1 m/s | 6.4 |
| 2010 | 23.3°C | 18.2°C | 13.2°C | 37.8°C | 10.5°C | 24 mm | 66% | 2.3 m/s | 7 |
| 2009 | 24.2°C | 18.6°C | 13.1°C | 38.6°C | 9.1°C | 8 mm | 62% | 2.2 m/s | 7.8 |
| 2008 | 23.9°C | 19.1°C | 14.3°C | 35.8°C | 11.6°C | 21 mm | 67% | 2.3 m/s | 7.3 |
| 2007 | 23.7°C | 19.0°C | 14.4°C | 35.2°C | 10.9°C | 81 mm | 69% | 2.4 m/s | 6.4 |
| 2006 | 24.1°C | 19.2°C | 14.3°C | 37.2°C | 11.0°C | 42 mm | 68% | 2.3 m/s | 7.1 |
| 2005 | 22.8°C | 18.1°C | 13.3°C | 33.8°C | 10.5°C | 48 mm | 69% | 2.4 m/s | 7.2 |
| 2004 | 20.9°C | 16.7°C | 12.5°C | 27.1°C | 9.9°C | 47 mm | 68% | 2.4 m/s | 6.7 |
| 2003 | 23.6°C | 18.5°C | 13.4°C | 38.0°C | 10.6°C | 35 mm | 66% | 2.5 m/s | 6.8 |
| 2002 | 21.2°C | 17.0°C | 12.8°C | 31.7°C | 9.6°C | 33 mm | 73% | 2.5 m/s | 6.2 |
| 2001 | 25.4°C | 20.3°C | 15.1°C | 34.7°C | 12.4°C | 21 mm | 66% | 2.4 m/s | 6.3 |
| 2000 | 22.2°C | 18.0°C | 13.8°C | 33.7°C | 10.2°C | 35 mm | 70% | 2.6 m/s | 6.4 |
| 1999 | 23.2°C | 18.8°C | 14.4°C | 31.7°C | 12.0°C | 32 mm | 73% | 2.5 m/s | 6.8 |
| 1998 | 23.3°C | 18.8°C | 14.2°C | 36.2°C | 11.7°C | 48 mm | 70% | 2.4 m/s | 6.6 |
| 1997 | 24.2°C | 19.0°C | 13.9°C | 37.0°C | 10.1°C | 63 mm | 65% | 2.6 m/s | 7 |
| 1996 | 21.6°C | 17.2°C | 12.7°C | 32.4°C | 9.8°C | 39 mm | 72% | 2.7 m/s | 6.5 |
| 1995 | 23.6°C | 19.0°C | 14.3°C | 33.3°C | 10.3°C | 52 mm | 71% | 2.4 m/s | 6.7 |
| 1994 | 21.1°C | 16.3°C | 11.5°C | 32.1°C | 9.3°C | 48 mm | 69% | 2.7 m/s | 7.1 |
| 1993 | 23.2°C | 18.4°C | 13.7°C | 34.8°C | 11.1°C | 84 mm | 72% | 2.1 m/s | 6.6 |
| 1992 ❄️ | 19.7°C | 15.7°C | 11.8°C | 29.9°C | 9.4°C | 28 mm | 72% | 2.7 m/s | 6.6 |
| 1991 | 22.7°C | 18.2°C | 13.7°C | 36.5°C | 10.9°C | 135 mm | 70% | 2.5 m/s | 6.7 |
| 1990 | 23.2°C | 18.3°C | 13.4°C | 34.1°C | 9.2°C | 18 mm | 64% | 2.6 m/s | 7.3 |
| 1989 | 22.7°C | 18.0°C | 13.3°C | 35.0°C | 10.6°C | 51 mm | 68% | 2.5 m/s | 6.8 |
| 1988 | 24.5°C | 19.4°C | 14.3°C | 34.9°C | 10.9°C | 59 mm | 66% | 2.2 m/s | 7 |
| 1987 | 20.4°C | 16.0°C | 11.6°C | 31.0°C | 8.3°C | 74 mm | 70% | 2.7 m/s | 6.6 |
| 1986 | 20.4°C | 16.4°C | 12.3°C | 32.3°C | 10.9°C | 30 mm | 70% | 2.7 m/s | 7.2 |
| 1985 | 22.5°C | 17.6°C | 12.7°C | 35.8°C | 10.4°C | 15 mm | 64% | 2.7 m/s | 6.8 |
| 1984 | 21.7°C | 17.4°C | 13.1°C | 29.1°C | 9.7°C | 52 mm | 67% | 2.7 m/s | 6.6 |
| 1983 | 22.2°C | 17.0°C | 11.7°C | 33.7°C | 8.1°C | 35 mm | 63% | 2.6 m/s | — |
| 1982 | 25.2°C | 19.8°C | 14.5°C | 39.0°C | 10.5°C | 34 mm | 62% | 2.5 m/s | — |
| 1981 | 25.7°C | 20.4°C | 15.1°C | 37.4°C | 11.7°C | 61 mm | 65% | 2.4 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 23.2°C with lows near 13.7°C (mean 18.5°C), based on 45 years of NASA POWER data.
January averages 49 mm of rainfall in Colac, one of the drier months. The wettest on record was 147 mm in 2011.
The hottest January reached 39°C in 1982. The coldest dipped to 8.1°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.7°C. Daytime highs moved from 23.5°C to 23.6°C and overnight lows from 13.4°C to 14.7°C over the same span.
January is one of the warmer months of the year in Colac and one of the drier months, so plan for around 23.2°C daytime highs and 13.7°C at night.
Not quite — January is the 11th coolest month in Colac, averaging 18.5°C.
For January in Colac, pack light layers you can adjust through the day, with typical highs of 23.2°C and lows of 13.7°C.
Relative humidity in January averages 68% — moderately humid.
Average wind speed in January is 2.5 m/s. The windiest January on record averaged 2.7 m/s (1984).
The wettest January on record was 2011 with 147 mm. On average, January sees 49 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 Colac 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.
