Click here to use our Data Request Form

Temperatures in coastal areas are comfortably warm, becoming cooler in the hilly and mountainous regions in the centre of the island, but moreso in the Blue Mountain range with a peak of 2256 metres (7,402 feet). Apart from rapid fluctuations associated with afternoon showers and/or the passage of frontal systems, the island's temperatures remain fairly constant throughout the year under the moderating influence of the warm waters of the Caribbean Sea.

In coastal areas, daily temperatures average 26.2 degrees Celsius (79.2ºF), with an average maximum of 30.3ºC (86.5ºF) and an average minimum of 22.0ºC (71.6ºF). Inland, temperature values are lower, depending on elevation but, regardless of elevation, the warmest months are June to August and the coolest December to February.

The diurnal range of temperature is much greater than the annual range and exceeds 11.0ºC or 20ºF in mountainous areas of the interior. Night-time values range from 18.9 to 25.6ºC (66 to 78.1ºF) in coastal areas. At elevations above 610 metres (2000 feet), minimum temperature of the order of 10ºC (50ºF) have been reported occasionally when active cold fronts reach the island.