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.

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Jumpers and raincoats needed for Melbourne & Adelaide

16:47 AEDT Temperatures well below average are forecast for Melbourne and Adelaide over the coming days, with some drizzly rain also adding to the chill factor.   Daytime temperatures are only expected to reach a top of 21 degrees on Monday in Melbourne, as a trough residing over the region keeps skies overcast and some possibly strong southerly winds persist throughout the day.

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