Global 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.
Severe weather will spread over parts of eastern Australia today after a wild night in the nation's south.
Pineapple farmers on the Sunshine Coast are concerned their fruit will burn and become unsaleable as a heatwave in south east Queensland reaches its peak today.
About 33,000 properties are without power in South Australia, with Adelaide being the hardest hit, after a storm front crossed the state last night.