Hornsby Weather & Climate: Best Time to Visit

In Hornsby, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures reach a comfortable 28°C (82°F) in January. In July, the coolest month of the year, temperatures drop to a pleasant 18°C (64°F).

At night, temperatures range from around 19°C (66°F) in January to 8°C (46°F) in July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Hornsby receives mid-range precipitation levels, with 811 mm (32 in) annually. Hornsby can be quite wet during February, receiving approximately 106 mm (4.2 in) of precipitation over 12 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 46 mm (1.8 in) of precipitation spread across 8 rainy days. For more details, please visit our Hornsby Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Hornsby experiences moderate variation in sunshine hours across the seasons. With 8.6 hours daily sunshine in December, it dips to 6.0 hours in May, offering a balanced mix of sunny and overcast days.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is moderate throughout the year in Hornsby.

The city experiences its highest humidity in February, reaching 62%. In August, the humidity drops to its lowest level at 48%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year