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How warm the water is, and against normal.
Sample content — not an operational product
Sea surface temperature is not yet published from the GMS forecast system. The figures on this page are illustrative and must not be used for any weather, marine or safety decision.
Grenada waters
29.4°C
Against normal
+0.6°C
Warmer than usual
Warm water is fuel for tropical storms: hurricanes generally need sea temperatures of about 26.5°C or more to form and strengthen. Around Grenada the sea is warmer than that for much of the year, and warmest from August to October.
Unusually warm water also stresses coral reefs and fisheries, and adds moisture to the air, which can mean heavier downpours.