what is the temperature in grand cayman
Grand Cayman: Annual Weather Averages. August is the hottest month in Grand Cayman with an average temperature of 30Â°C (85Â°F) and the coldest is January at 25Â°C (77Â°F) with the most daily sunshine hours at 11 in July. The wettest month is October with an average of 220mm of rain. The best month to swim in the sea is in September when the average sea temperature is 30Â°C (86Â°F).