average monthly precipitation in jamaica
1 Average monthly temperatures vary by 2.5 Â°C (4.5Â°F). 2  This indicates that the continentality type is hyperoceanic, subtype extremely hyperoceanic. 3  Total annual Precipitation averages 811 mm (31.9 inches) which is equivalent to 811 Litres/m (19.89 Gallons/ft).