Mornington Water Temperature
The water will feel tepid. Swimming will be tolerable without a wetsuit, although it will take a little getting used to. If you intend to stay in the water for a while a 3/2mm wetsuit will be ideal.
The measurements for the water temperature in Mornington, Victoria are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.
Water temp by month
Monthly average max / min water temperatures
The graph below shows the range of monthly Mornington water temperature derived from many years of historical sea surface temperature data.
The warmest water temperature is in February with an average around 64.9°F / 18.3°C. The coldest month is August with an average water temperature of 55.9°F / 13.3°C.