Climate almanac
Blue Mountains
New South Wales, Australia · -33.71°, 150.33°
What is the weather like in Blue Mountains in December?
In December, Blue Mountains is typically 77°F (25°C) during the day and 55°F (13°C) at night. The month brings about 4.5 in (115 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low55°F (13°C)
- Precipitation4.5 in (115 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)