January is one of the warmer months of the year in Yanchep, with average highs near 30.2°C and lows around 19.2°C (mean 24.7°C). It is one of the drier months, averaging 18 mm of rainfall and 56% relative humidity across the period.
January is one of the warmer months of the year in Yanchep. Across 45 years of records, the warmest Januarys in Yanchep were 2012 and 2025 — when the month averaged 26.5°C — while the coldest were 1982 and 1990 at 22.7°C. Typical January days reach 30.2°C with nights near 19.2°C. The long-term trend is warming, about 0.2°C per decade.
January is one of the drier months in Yanchep, averaging 18 mm of rainfall. The wettest January on record was 1990 with 94 mm, while the driest was 2005 at 0 mm.
Relative humidity in Yanchep during January averages 56%. The most humid January was 2001 at 65%, and the least humid was 1981 at 48%.
January receives about 8.3 kWh/m²/day of solar energy in Yanchep. The sunniest January was 2022 at 8.8 kWh/m²/day, and the cloudiest was 2016 at 7.4.
Average wind speed in Yanchep during January is 4.9 m/s. The windiest January was 2018 at 5.5 m/s, while the calmest was 2016 at 4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.4°C | 24.6°C | 24.2°C | 24.9°C | 25.6°C | +1.2°C |
| Avg High | 30.0°C | 30.2°C | 29.6°C | 30.4°C | 31.0°C | +1°C |
| Avg Low | 18.8°C | 19.0°C | 18.8°C | 19.5°C | 20.1°C | +1.3°C |
| Avg Rain | 13 mm | 15 mm | 19 mm | 30 mm | 5 mm | -8 mm |
January temperatures in Yanchep have risen by about 1.6°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 12.4°C (1990) to a record high of 42.7°C (1991).
Rainfall in January is one of the drier months, averaging 18 mm, with a wettest year of 94 mm.
A good time to visit Yanchep
January is a good time to visit Yanchep, with days averaging 30.2°C and nights around 19.2°C (mean 24.7°C, warmer than Yanchep's yearly average) and low rainfall. December and April 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 | 31.7°C | 26.5°C | 21.3°C | 40.7°C | 17.6°C | 3 mm | 57% | 4.5 m/s | 8.1 |
| 2024 | 31.0°C | 25.5°C | 20.1°C | 40.8°C | 17.5°C | 12 mm | 59% | 4.7 m/s | 8.6 |
| 2023 | 30.9°C | 25.2°C | 19.4°C | 37.0°C | 15.7°C | 9 mm | 54% | 5 m/s | 8.7 |
| 2022 | 32.3°C | 26.4°C | 20.5°C | 39.2°C | 17.1°C | 4 mm | 53% | 5 m/s | 8.8 |
| 2021 | 31.1°C | 25.7°C | 20.3°C | 39.3°C | 16.3°C | 1 mm | 50% | 5.3 m/s | 8.3 |
| 2020 | 28.9°C | 24.0°C | 19.1°C | 39.6°C | 14.2°C | 2 mm | 59% | 5 m/s | 8.5 |
| 2019 | 28.2°C | 23.2°C | 18.2°C | 37.5°C | 14.1°C | 7 mm | 61% | 4.9 m/s | 8.7 |
| 2018 | 28.8°C | 23.8°C | 18.8°C | 36.3°C | 15.1°C | 92 mm | 62% | 5.5 m/s | 8.3 |
| 2017 | 29.5°C | 24.0°C | 18.5°C | 39.3°C | 15.2°C | 84 mm | 58% | 5 m/s | 8.2 |
| 2016 | 30.2°C | 25.0°C | 19.9°C | 37.6°C | 15.7°C | 67 mm | 60% | 4 m/s | 7.4 |
| 2015 | 31.3°C | 25.3°C | 19.3°C | 39.9°C | 15.4°C | 2 mm | 54% | 4.7 m/s | 8.2 |
| 2014 | 30.5°C | 25.2°C | 19.9°C | 41.6°C | 16.6°C | 3 mm | 56% | 5.1 m/s | 8.6 |
| 2013 | 30.2°C | 25.0°C | 19.8°C | 38.2°C | 16.0°C | 19 mm | 58% | 5 m/s | 8 |
| 2012 🔥 | 32.0°C | 26.5°C | 21.1°C | 39.6°C | 15.4°C | 12 mm | 55% | 4.8 m/s | 7.9 |
| 2011 | 30.9°C | 25.7°C | 20.4°C | 38.2°C | 17.4°C | 17 mm | 57% | 4.7 m/s | 7.9 |
| 2010 | 31.9°C | 25.7°C | 19.5°C | 41.1°C | 16.1°C | 0 mm | 53% | 5.1 m/s | 8.6 |
| 2009 | 30.7°C | 25.3°C | 20.0°C | 37.4°C | 17.4°C | 7 mm | 60% | 4.9 m/s | 8.2 |
| 2008 | 31.5°C | 25.7°C | 19.8°C | 38.3°C | 15.7°C | 0 mm | 54% | 5.1 m/s | 8.1 |
| 2007 | 28.2°C | 23.1°C | 18.1°C | 38.4°C | 14.9°C | 20 mm | 61% | 4.7 m/s | 8.1 |
| 2006 | 28.6°C | 23.3°C | 18.0°C | 37.4°C | 12.5°C | 67 mm | 62% | 5.2 m/s | 7.5 |
| 2005 | 29.5°C | 23.8°C | 18.1°C | 39.2°C | 14.8°C | 0 mm | 58% | 5.4 m/s | 8.7 |
| 2004 | 30.3°C | 24.7°C | 19.0°C | 38.8°C | 16.1°C | 3 mm | 60% | 4.7 m/s | 8.4 |
| 2003 | 29.9°C | 24.2°C | 18.5°C | 38.3°C | 14.5°C | 1 mm | 54% | 4.9 m/s | 8.5 |
| 2002 | 29.5°C | 24.1°C | 18.6°C | 36.5°C | 14.2°C | 8 mm | 56% | 4.7 m/s | 8.2 |
| 2001 | 28.4°C | 23.7°C | 18.9°C | 37.3°C | 14.9°C | 6 mm | 65% | 4.8 m/s | 7.9 |
| 2000 | 29.4°C | 24.4°C | 19.4°C | 36.1°C | 16.0°C | 82 mm | 60% | 4.7 m/s | 7.5 |
| 1999 | 29.5°C | 24.3°C | 19.0°C | 38.8°C | 14.3°C | 42 mm | 61% | 5.1 m/s | 8.1 |
| 1998 | 30.8°C | 25.0°C | 19.2°C | 39.6°C | 15.0°C | 1 mm | 56% | 4.6 m/s | 8.6 |
| 1997 | 31.7°C | 25.8°C | 19.9°C | 40.1°C | 15.2°C | 0 mm | 51% | 4.9 m/s | 8.5 |
| 1996 | 29.7°C | 24.1°C | 18.5°C | 38.3°C | 14.0°C | 2 mm | 54% | 5.3 m/s | 8.6 |
| 1995 | 31.0°C | 25.4°C | 19.8°C | 37.9°C | 15.8°C | 3 mm | 57% | 5.2 m/s | 8.6 |
| 1994 | 29.3°C | 23.7°C | 18.1°C | 41.4°C | 15.1°C | 1 mm | 56% | 5.3 m/s | 8.7 |
| 1993 | 30.0°C | 24.4°C | 18.9°C | 38.6°C | 15.6°C | 1 mm | 59% | 4.6 m/s | 8.5 |
| 1992 | 31.5°C | 25.9°C | 20.3°C | 36.8°C | 15.9°C | 4 mm | 52% | 4.4 m/s | 7.9 |
| 1991 | 30.8°C | 25.0°C | 19.2°C | 42.7°C | 14.1°C | 2 mm | 53% | 4.9 m/s | 8.5 |
| 1990 🌧️ | 27.8°C | 22.7°C | 17.6°C | 34.4°C | 12.4°C | 94 mm | 59% | 5.3 m/s | 7.7 |
| 1989 | 30.6°C | 25.2°C | 19.9°C | 39.6°C | 14.8°C | 17 mm | 51% | 4.9 m/s | 7.6 |
| 1988 | 28.6°C | 23.4°C | 18.2°C | 40.5°C | 13.1°C | 3 mm | 57% | 4.8 m/s | 8.2 |
| 1987 | 28.5°C | 23.2°C | 18.0°C | 35.1°C | 15.0°C | 1 mm | 57% | 5 m/s | 8.4 |
| 1986 | 31.9°C | 25.9°C | 19.9°C | 40.3°C | 15.5°C | 4 mm | 50% | 4.9 m/s | 8.6 |
| 1985 | 29.2°C | 23.7°C | 18.1°C | 39.6°C | 14.7°C | 6 mm | 57% | 4.9 m/s | 8.7 |
| 1984 | 30.6°C | 24.9°C | 19.1°C | 39.1°C | 15.2°C | 1 mm | 52% | 5 m/s | 8.3 |
| 1983 | 30.7°C | 25.0°C | 19.4°C | 39.2°C | 15.5°C | 1 mm | 52% | 4.9 m/s | — |
| 1982 ❄️ | 27.9°C | 22.7°C | 17.6°C | 36.4°C | 14.7°C | 84 mm | 62% | 5 m/s | — |
| 1981 | 31.8°C | 25.4°C | 19.0°C | 41.6°C | 15.2°C | 1 mm | 48% | 5.4 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 30.2°C with lows near 19.2°C (mean 24.7°C), based on 45 years of NASA POWER data.
January averages 18 mm of rainfall in Yanchep, one of the drier months. The wettest on record was 94 mm in 1990.
The hottest January reached 42.7°C in 1991. The coldest dipped to 12.4°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.6°C. Daytime highs moved from 30°C to 31.4°C and overnight lows from 18.6°C to 20.3°C over the same span.
January is one of the warmer months of the year in Yanchep and one of the drier months, so plan for around 30.2°C daytime highs and 19.2°C at night.
Not quite — January is the 11th coolest month in Yanchep, averaging 24.7°C.
For January in Yanchep, pack light, breathable clothing and sun protection, with typical highs of 30.2°C and lows of 19.2°C.
Relative humidity in January averages 56% — moderately humid.
Average wind speed in January is 4.9 m/s. The windiest January on record averaged 5.5 m/s (2018).
The wettest January on record was 1990 with 94 mm. On average, January sees 18 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 Yanchep 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.
