Tasmania Sea Surface Temperature
The sea surface temperature (SST) varies much more slowly than atmospheric temperatures due to the heat capacity of water. As such, the SSTs lag the atmospheric temperatures on a seasonal timescale by about 3 months. The lowest SSTs are usually observed in early Spring and the highest SSTs are observed in early Autumn.
In tropical regions, SSTs greater than 26°C are considered suitable for formation of tropical cyclones.
The data displayed in this map is the weekly average, centred on the date shown.
For most of Australia's frost-prone areas the frost season has started later than any other year since 2007 but now it has arrived with a shudder.
Although temperatures across the southern states have been more seasonal over the recent days, temperatures along the eastern seaboard have remained quite balmy.
Water is flowing into outback Lake Eyre, but somewhat differently from past flooding of the remote saltpan, travel guide Rex Ellis says.