Monthly Arniston water temperature chart
The bar chart below shows the average monthly sea temperatures at Arniston over the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 21.4 | 21.3 | 21.2 | 18.8 | 16.4 | 15.4 | 14.8 | 14.8 | 15.6 | 16.5 | 17.7 | 19.7 |
| °F | 70.5 | 70.3 | 70.2 | 65.8 | 61.5 | 59.7 | 58.6 | 58.6 | 60.1 | 61.7 | 63.9 | 67.5 |
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 | 19.7 | 20.1 | 19.5 | 16.5 | 14.7 | 14.5 | 14 | 13.9 | 14.3 | 15.2 | 16.1 | 18.4 |
| Max °C | 23.1 | 22.5 | 22.9 | 21.1 | 18.1 | 16.3 | 15.6 | 15.7 | 16.9 | 17.9 | 19.4 | 21.1 |
| Min °F | 68.8 | 69.1 | 68.5 | 63.5 | 59.8 | 58.8 | 57.8 | 57.7 | 58.8 | 60.4 | 62.3 | 66.2 |
| Max °F | 72.2 | 71.5 | 71.9 | 68.1 | 63.2 | 60.6 | 59.4 | 59.5 | 61.4 | 63.1 | 65.6 | 68.9 |