Climate averages 1991–2020
Blue Mountains weather
in January.
A warm, wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Blue Mountains: daytime highs average 23.6°C and nights cool to about 12.8°C. By daytime temperature it is the warmest month of the year.
Expect about 126 mm of rain on roughly 16 days, which makes January a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 07 min on an average January day.
The nearest other city in this atlas is Sydney (83 km away). In January its highs average 25.6°C, 2.0°C warmer than Blue Mountains, with 73 mm of rain.
Among the 32 cities listed in Australia, Blue Mountains ranks 30th of 32 for the warmest January highs and 26th of 32 for the driest January (rainfall, lowest first). The mean January high of those 32 cities is 27.2°C; Blue Mountains is 3.6°C cooler than that mean.
From January to February, average highs fall by 1.4°C to 22.2°C, and monthly rainfall rises from 126 mm to 148 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Blue Mountains climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 23.6°C12.8°C | 12.8°C | 126 | 15.5 | 14.114 h |
| February | 22.2°C12.6°C | 12.6°C | 148 | 15.4 | 13.313 h |
| March | 19.9°C10.8°C | 10.8°C | 115 | 15.1 | 12.312 h |
| April | 16.8°C7.7°C | 7.7°C | 56 | 9.1 | 11.311 h |
| May | 13.3°C4.6°C | 4.6°C | 48 | 6.6 | 10.410 h |
| June | 10.4°C2.7°C | 2.7°C | 62 | 7.7 | 10.010 h |
| July | 9.9°C1.5°C | 1.5°C | 37 | 6.3 | 10.110 h |
| August | 11.5°C1.8°C | 1.8°C | 46 | 6.7 | 10.911 h |
| September | 15.0°C4.3°C | 4.3°C | 53 | 8.3 | 11.912 h |
| October | 18.0°C6.6°C | 6.6°C | 75 | 10.5 | 12.913 h |
| November | 20.1°C8.9°C | 8.9°C | 109 | 13.7 | 13.814 h |
| December | 22.1°C11.0°C | 11.0°C | 121 | 13.5 | 14.314 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Sydney in JanuaryAustralia · 83 kmHigh 25.6°C · Low 19.5°C · 73 mm rain
- Wollongong in JanuaryAustralia · 95 kmHigh 24.8°C · Low 19.2°C · 84 mm rain
- Central Coast in JanuaryAustralia · 101 kmHigh 25.7°C · Low 20.1°C · 78 mm rain
- Maitland in JanuaryAustralia · 158 kmHigh 29.0°C · Low 19.3°C · 66 mm rain
- Newcastle, Australia in JanuaryAustralia · 160 kmHigh 26.1°C · Low 20.2°C · 76 mm rain
- Canberra in JanuaryAustralia · 206 kmHigh 26.7°C · Low 14.3°C · 48 mm rain
- Tuggeranong in JanuaryAustralia · 222 kmHigh 26.7°C · Low 14.3°C · 72 mm rain
- Coffs Harbour in JanuaryAustralia · 462 kmHigh 26.5°C · Low 20.8°C · 160 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Blue Mountains) is explained once on the Blue Mountains year overview and on the Sources, method and limits page.