What do we Usually Expect for March-April-May?


This period typically marks the late dry season in Belize and the Caribbean Islands, with May marking the onset of the early wet season in the Greater Antilles. March to April further marks the secondary dry season in the coastal Guianas, where the primary wet season starts in May. The March to May period is a part of the long dry season in the ABC Islands. This is illustrated in the Figure below (Historical Average Rainfall Totals). Click on the image to see a larger map.

  • March is the last month of the Cool Season. From April onwards, temperatures rise to become uncomfortable at times during May, which, historically, forms the first month of the Heat Season across the region. In Belize and Trinidad, a peak in the number of heatwaves typically occurs during May. That said, with the exception of the Guianas, air humidity is typically at its lowest during the late dry season, moderating ‘feels-like’ temperatures as compared to the second half of the Heat Season (i.e. August to October).

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.