• September to October form the tail end of the Caribbean Heat Season (which runs from April/May to October), with the annual peak in ‘feels-like’ temperatures usually ending in September.
• The likelihood and frequency of heatwaves throughout the region is relatively high in September (and October in Barbados, the Windward Islands, Trinidad & Tobago and the Guianas), but essentially decreases to nil afterwards.
• Air humidity tends to peak between September and November in the Caribbean Islands and Belize, while cooling breezes are often absent. This makes high ‘feels-like’ temperatures until October more impactful, especially to the vulnerable sections of the population.

This Bulletin provides a broad overview of climate conditions up to 3 months in advance. It is based on insights drawn from CIMH’s suite of technical climate information products and epidemiological insights from CARPHA and PAHO. The information contained herein is provided with the understanding that the CARPHA, the PAHO and the CIMH make no warranties, either expressed or implied, concerning the accuracy, completeness, reliability or suitability of said information. The Bulletin may be freely used and disseminated by the public with appropriate acknowledgement of its source but shall not be modified in content and then presented as original material.