Average annual temperature is 10.9 °C
Absolute maximum temperature: 30.6 °C
Absolute minimum temperature: -2.4 °C
Number of sunny days: 140 days
Number of rainy days: 225 days
Look at detailed online map of Osterley
* Weather data for Osterley Australia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.4 | 30.6 | 25.8 | 20.4 | 15.9 | 15.2 | 14.7 | 15.5 | 22.9 | 23.6 | 25.3 | 26.5 |
| Average daytime temperature (°C) | 22.8 | 21.0 | 17.8 | 16.1 | 11.8 | 10.5 | 11.2 | 11.4 | 14.4 | 14.4 | 17.9 | 19.9 |
| Average temperature (°C) | 16.5 | 15.1 | 12.8 | 11.3 | 8.2 | 6.9 | 8.0 | 7.5 | 9.5 | 9.4 | 12.2 | 14.1 |
| Average night temperature (°C) | 11.1 | 10.5 | 9.2 | 7.7 | 5.1 | 4.1 | 5.4 | 4.4 | 5.2 | 5.2 | 7.7 | 8.9 |
| Absolute minimum temperature (°C) | 6.4 | 3.2 | 2.6 | 4.5 | -2.2 | -1.4 | -1.9 | -2.4 | -0.7 | 0.6 | 3.0 | 3.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 | 11.0 | 12.0 | 13.0 | 15.0 | 15.0 |
| Daylight mean duration (h) | 14.9 | 13.7 | 12.4 | 10.9 | 9.7 | 9.1 | 9.4 | 10.5 | 11.8 | 13.2 | 14.5 | 15.2 |
| Daylight minimum duration (h) | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 | 9.0 | 9.0 | 11.0 | 12.0 | 13.0 | 15.0 |
| Sunshine mean duration (h) | 11.3 | 9.5 | 7.8 | 6.9 | 5.4 | 5.6 | 5.8 | 6.6 | 8.4 | 9.3 | 10.3 | 11.2 |
| Precipitation (mm) | 60 | 46 | 43 | 35 | 60 | 77 | 67 | 42 | 45 | 88 | 55 | 37 |
| Sunny days | 13 | 12 | 11 | 17 | 9 | 13 | 11 | 12 | 10 | 7 | 10 | 15 |
| Rainy days | 18 | 16 | 20 | 13 | 22 | 17 | 20 | 19 | 20 | 24 | 20 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Osterley during the most sunny months:
Months with the longest average daylight duration in Osterley:
The largest precipitation sum in Osterley is at