Perth Weather in January
Average highs run from 3°C on January 1 to 4°C on January 31, and lows from -1°C to -1°C. Normal precipitation for the month is 99 mm over about 19 wet days.
January day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
January at a glance
- Average high
- 4°C
- Average low
- 0°C
- Precipitation
- 99 mm
- Reanalysis high
- 11°CJan 7, 2020
- Reanalysis low
- -10°CJan 7, 2018
- Daylight
- 6 h 59 min to 8 h 31 min
- Cloud cover
- 77%
- Humidity
- 96%
- Dew point
- 1°C
- Wind
- 21.2 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 3°C | -1°C | 10°C 2015 | -8°C 1997 | 58% |
| Jan 2 | 3°C | -1°C | 10°C 1992 | -8°C 2010 | 59% |
| Jan 3 | 3°C | -1°C | 9°C 1992 | -9°C 2010 | 59% |
| Jan 4 | 3°C | -1°C | 8°C 2005 | -7°C 1997 | 61% |
| Jan 5 | 3°C | -1°C | 8°C 2013 | -8°C 1997 | 62% |
| Jan 6 | 4°C | -1°C | 9°C 2005 | -8°C 2018 | 64% |
| Jan 7 | 4°C | 0°C | 11°C 2020 | -10°C 2018 | 65% |
| Jan 8 | 4°C | 0°C | 9°C 2013 | -7°C 2018 | 66% |
| Jan 9 | 4°C | 0°C | 10°C 2005 | -7°C 2010 | 66% |
| Jan 10 | 4°C | 0°C | 10°C 2005 | -8°C 2010 | 64% |
| Jan 11 | 4°C | 0°C | 9°C 2009 | -8°C 2011 | 64% |
| Jan 12 | 4°C | 0°C | 10°C 2007 | -5°C 1991 | 63% |
| Jan 13 | 4°C | 0°C | 9°C 1997 | -6°C 1991 | 62% |
| Jan 14 | 4°C | 0°C | 9°C 2002 | -5°C 1991 | 62% |
| Jan 15 | 4°C | 0°C | 10°C 2005 | -6°C 2001 | 62% |
| Jan 16 | 4°C | 0°C | 10°C 1993 | -6°C 1991 | 62% |
| Jan 17 | 4°C | 0°C | 9°C 1993 | -5°C 2016 | 62% |
| Jan 18 | 4°C | 0°C | 9°C 2008 | -3°C 2013 | 61% |
| Jan 19 | 4°C | 0°C | 10°C 2004 | -6°C 2016 | 60% |
| Jan 20 | 4°C | 0°C | 8°C 2002 | -6°C 2016 | 58% |
| Jan 21 | 4°C | 0°C | 9°C 2002 | -6°C 2018 | 57% |
| Jan 22 | 4°C | 0°C | 9°C 2020 | -3°C 1992 | 56% |
| Jan 23 | 4°C | 0°C | 9°C 2008 | -6°C 2019 | 54% |
| Jan 24 | 4°C | 0°C | 10°C 2016 | -5°C 2013 | 54% |
| Jan 25 | 4°C | 0°C | 10°C 2016 | -5°C 2002 | 54% |
| Jan 26 | 4°C | -1°C | 10°C 2003 | -5°C 1995 | 52% |
| Jan 27 | 4°C | -1°C | 9°C 2003 | -6°C 1995 | 53% |
| Jan 28 | 4°C | -1°C | 9°C 2018 | -3°C 1996 | 53% |
| Jan 29 | 4°C | 0°C | 8°C 2000 | -7°C 1995 | 54% |
| Jan 30 | 4°C | 0°C | 9°C 2000 | -10°C 1995 | 53% |
| Jan 31 | 4°C | -1°C | 10°C 2007 | -5°C 2019 | 53% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT).
- January 1
- sunrise 8:48 AM, sunset 3:47 PM
- January 31
- sunrise 8:12 AM, sunset 4:43 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.