January is one of the warmer months of the year in Swan Hill, with average highs near 33.5°C and lows around 16.9°C (mean 25.2°C). It is about average for rainfall, averaging 31 mm of rainfall and 40% relative humidity across the period.
January is one of the warmer months of the year in Swan Hill. Across 45 years of records, the warmest January in Swan Hill was 2019 — when the month averaged 29.1°C — while the coldest was 1992 at 21.8°C. Typical January days reach 33.5°C with nights near 16.9°C. The long-term trend is warming, about 0.4°C per decade.
January is about average for rainfall in Swan Hill, averaging 31 mm of rainfall. The wettest January on record was 2011 with 155 mm, while the driest was 2009 at 0 mm.
Relative humidity in Swan Hill during January averages 40%. The most humid January was 2011 at 61%, and the least humid was 2009 at 30%.
January receives about 7.9 kWh/m²/day of solar energy in Swan Hill. The sunniest January was 2009 at 8.7 kWh/m²/day, and the cloudiest was 2016 at 7.2.
Average wind speed in Swan Hill during January is 3.7 m/s. The windiest January was 1990 at 4.2 m/s, while the calmest were 2011 and 2024 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.4°C | 24.7°C | 25.3°C | 26.0°C | 25.4°C | +1°C |
| Avg High | 32.9°C | 32.8°C | 33.8°C | 34.3°C | 33.5°C | +0.6°C |
| Avg Low | 15.8°C | 16.6°C | 16.8°C | 17.8°C | 17.3°C | +1.5°C |
| Avg Rain | 28 mm | 28 mm | 19 mm | 44 mm | 42 mm | +14 mm |
January temperatures in Swan Hill have risen by about 0.5°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 8.1°C (2009) to a record high of 47.9°C (2019).
Rainfall in January is about average for rainfall, averaging 31 mm, with a wettest year of 155 mm.
A good time to visit Swan Hill
January is a good time to visit Swan Hill, with days averaging 33.5°C and nights around 16.9°C (mean 25.2°C, warmer than Swan Hill's yearly average) and moderate rainfall. March and December 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 | 34.8°C | 26.3°C | 17.8°C | 43.8°C | 11.9°C | 9 mm | 37% | 3.6 m/s | 7.8 |
| 2024 | 31.1°C | 23.9°C | 16.7°C | 36.6°C | 10.8°C | 100 mm | 60% | 3.1 m/s | 7.4 |
| 2023 | 33.5°C | 25.2°C | 16.9°C | 41.0°C | 10.9°C | 33 mm | 44% | 3.2 m/s | 7.9 |
| 2022 | 35.1°C | 27.4°C | 19.7°C | 40.5°C | 14.4°C | 59 mm | 45% | 3.4 m/s | 7.8 |
| 2021 | 32.6°C | 24.6°C | 16.7°C | 40.7°C | 11.0°C | 24 mm | 42% | 3.9 m/s | 7.8 |
| 2020 | 33.9°C | 25.1°C | 16.3°C | 45.2°C | 10.5°C | 28 mm | 39% | 3.5 m/s | 7.7 |
| 2019 🔥 | 38.2°C | 29.1°C | 20.1°C | 47.9°C | 13.1°C | 3 mm | 30% | 3.5 m/s | 8.1 |
| 2018 | 36.2°C | 27.6°C | 19.1°C | 45.0°C | 10.3°C | 20 mm | 35% | 3.5 m/s | 7.9 |
| 2017 | 33.9°C | 25.5°C | 17.2°C | 42.8°C | 11.0°C | 105 mm | 42% | 3.4 m/s | 7.8 |
| 2016 | 33.3°C | 26.1°C | 18.8°C | 45.9°C | 12.0°C | 48 mm | 41% | 3.3 m/s | 7.2 |
| 2015 | 32.2°C | 24.7°C | 17.3°C | 42.7°C | 11.2°C | 40 mm | 46% | 3.9 m/s | 7.4 |
| 2014 | 35.7°C | 27.1°C | 18.6°C | 45.6°C | 9.8°C | 7 mm | 34% | 4 m/s | 8 |
| 2013 | 35.0°C | 25.8°C | 16.6°C | 45.6°C | 11.0°C | 5 mm | 31% | 3.8 m/s | 8.5 |
| 2012 | 33.3°C | 25.4°C | 17.5°C | 41.5°C | 9.1°C | 35 mm | 41% | 4.1 m/s | 8 |
| 2011 🌧️ | 30.7°C | 23.5°C | 16.2°C | 39.0°C | 10.2°C | 155 mm | 61% | 3.1 m/s | 7.7 |
| 2010 | 34.3°C | 25.3°C | 16.3°C | 44.7°C | 9.7°C | 24 mm | 36% | 3.7 m/s | 8.4 |
| 2009 | 35.5°C | 26.2°C | 16.9°C | 45.5°C | 8.1°C | 0 mm | 30% | 3.3 m/s | 8.7 |
| 2008 | 34.8°C | 26.2°C | 17.5°C | 42.2°C | 12.4°C | 31 mm | 41% | 3.6 m/s | 7.9 |
| 2007 | 32.5°C | 24.7°C | 17.0°C | 40.8°C | 10.6°C | 49 mm | 46% | 3.8 m/s | 7.5 |
| 2006 | 36.5°C | 27.9°C | 19.2°C | 43.5°C | 12.8°C | 24 mm | 37% | 3.8 m/s | 7.8 |
| 2005 | 32.6°C | 24.6°C | 16.6°C | 41.3°C | 9.0°C | 26 mm | 42% | 3.5 m/s | 7.7 |
| 2004 | 31.2°C | 22.9°C | 14.6°C | 41.3°C | 9.4°C | 5 mm | 38% | 3.7 m/s | 8.2 |
| 2003 | 34.5°C | 25.3°C | 16.2°C | 44.7°C | 9.5°C | 4 mm | 35% | 4.1 m/s | 8.2 |
| 2002 | 32.3°C | 23.6°C | 14.9°C | 41.5°C | 9.9°C | 13 mm | 37% | 3.8 m/s | 7.8 |
| 2001 | 37.2°C | 28.6°C | 19.9°C | 46.8°C | 13.4°C | 22 mm | 35% | 3.7 m/s | 7.8 |
| 2000 | 31.3°C | 23.3°C | 15.4°C | 41.3°C | 8.8°C | 11 mm | 42% | 4 m/s | 7.9 |
| 1999 | 36.8°C | 28.2°C | 19.6°C | 44.5°C | 13.0°C | 21 mm | 36% | 3.2 m/s | 7.9 |
| 1998 | 32.8°C | 25.1°C | 17.4°C | 42.8°C | 11.9°C | 32 mm | 41% | 3.5 m/s | 7.9 |
| 1997 | 33.5°C | 25.2°C | 16.9°C | 41.2°C | 11.0°C | 26 mm | 38% | 3.9 m/s | 7.8 |
| 1996 | 32.0°C | 23.9°C | 15.7°C | 42.4°C | 10.9°C | 19 mm | 41% | 3.5 m/s | 7.9 |
| 1995 | 32.8°C | 25.4°C | 18.0°C | 40.0°C | 9.5°C | 49 mm | 45% | 3.5 m/s | 7.5 |
| 1994 | 31.6°C | 23.0°C | 14.4°C | 42.7°C | 9.1°C | 11 mm | 39% | 4.1 m/s | 7.9 |
| 1993 | 31.6°C | 23.8°C | 15.9°C | 39.9°C | 9.3°C | 43 mm | 56% | 3.2 m/s | 7.9 |
| 1992 ❄️ | 29.8°C | 21.8°C | 13.7°C | 40.0°C | 8.7°C | 12 mm | 42% | 3.8 m/s | 8.1 |
| 1991 | 33.3°C | 25.2°C | 17.0°C | 41.9°C | 11.9°C | 58 mm | 43% | 3.7 m/s | 7.8 |
| 1990 | 34.2°C | 25.7°C | 17.2°C | 47.3°C | 9.8°C | 11 mm | 35% | 4.2 m/s | 8.1 |
| 1989 | 31.5°C | 23.4°C | 15.3°C | 38.0°C | 10.0°C | 18 mm | 41% | 4 m/s | 8.3 |
| 1988 | 35.0°C | 26.3°C | 17.7°C | 43.6°C | 10.6°C | 48 mm | 36% | 3.7 m/s | 8.2 |
| 1987 | 30.5°C | 22.1°C | 13.8°C | 41.5°C | 8.6°C | 26 mm | 40% | 3.6 m/s | 8 |
| 1986 | 31.2°C | 22.5°C | 13.7°C | 39.8°C | 10.4°C | 1 mm | 38% | 4 m/s | 8.5 |
| 1985 | 33.1°C | 24.2°C | 15.4°C | 44.2°C | 9.8°C | 11 mm | 34% | 3.9 m/s | 8 |
| 1984 | 29.9°C | 22.0°C | 14.1°C | 36.6°C | 8.8°C | 84 mm | 51% | 3.8 m/s | 7.5 |
| 1983 | 32.3°C | 23.3°C | 14.3°C | 44.0°C | 8.3°C | 1 mm | 31% | 3.7 m/s | — |
| 1982 | 35.0°C | 26.7°C | 18.4°C | 46.5°C | 11.0°C | 27 mm | 35% | 4 m/s | — |
| 1981 | 37.5°C | 28.7°C | 19.8°C | 44.6°C | 13.6°C | 36 mm | 33% | 3.7 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 33.5°C with lows near 16.9°C (mean 25.2°C), based on 45 years of NASA POWER data.
January averages 31 mm of rainfall in Swan Hill, about average for rainfall. The wettest on record was 155 mm in 2011.
The hottest January reached 47.9°C in 2019. The coldest dipped to 8.1°C in 2009.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.5°C — but days and nights have moved in opposite directions. Overnight lows rose from 16.4°C to 17.6°C while daytime highs eased from 33.6°C to 33.4°C, narrowing the gap between day and night.
January is one of the warmer months of the year in Swan Hill and about average for rainfall, so plan for around 33.5°C daytime highs and 16.9°C at night.
Not quite — January is the 12th coolest month in Swan Hill, averaging 25.2°C.
For January in Swan Hill, pack light, breathable clothing and sun protection, with typical highs of 33.5°C and lows of 16.9°C.
Relative humidity in January averages 40% — relatively dry.
Average wind speed in January is 3.7 m/s. The windiest January on record averaged 4.2 m/s (1990).
The wettest January on record was 2011 with 155 mm. On average, January sees 31 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 Swan Hill 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.
