Monthly Perth water temperature chart
The bar chart below shows the average monthly sea temperatures at Perth over the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 21.7 | 22.6 | 23.2 | 22.6 | 21.9 | 21.1 | 19.7 | 19.2 | 18.7 | 18.7 | 19.4 | 20.7 |
| °F | 71.1 | 72.7 | 73.8 | 72.7 | 71.4 | 70 | 67.5 | 66.6 | 65.7 | 65.7 | 66.9 | 69.3 |
Monthly average max / min water temperatures
The graph below shows the range of monthly water temperatures over several years.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 19.8 | 19.9 | 21.3 | 20.7 | 20.4 | 19.3 | 18.6 | 18.3 | 17.6 | 17 | 17.9 | 18.6 |
| Max °C | 23.7 | 25.3 | 25.1 | 24.6 | 23.5 | 23 | 20.9 | 20.2 | 19.8 | 20.4 | 21 | 22.9 |
| Min °F | 69.2 | 70 | 71.9 | 70.8 | 69.9 | 68.2 | 66.4 | 65.7 | 64.6 | 64 | 65.4 | 67.2 |
| Max °F | 73.1 | 75.4 | 75.7 | 74.7 | 73 | 71.9 | 68.7 | 67.6 | 66.8 | 67.4 | 68.5 | 71.5 |