SPI Monitor September 2026

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September 2026

Predominantly normal to below normal conditions were experienced throughout the islands of the eastern Caribbean during the month of September. Trinidad, Barbados, Antigua and Anguilla were normal to moderately dry; Tobago normal to extremely dry; Grenada extreme to exceptionally dry; St Vincent extreme to severely dry; Saint Lucia moderate to severely dry; Martinique exceptional to moderately dry; Dominica exceptionally dry to normal; Guadeloupe exceptionally dry to moderately wet; St Kitts moderate to severely dry; St Maarten severely dry to normal; St Croix slight to severely dry and St Thomas moderately dry. In the Guianas, conditions ranged from exceptionally dry over much of the area to exceptionally wet in extreme northeastern portions of Guyana. Aruba was exceptional to moderately dry. Curacao was normal to exceptionally dry. Puerto Rico ranged from very wet in the north to exceptionally dry in southern areas. The Dominican Republic was moderately wet to severely dry. Jamaica was exceptionally dry in the south to exceptionally wet in the north. Grand Cayman was slightly wet. Cuba ranged from exceptionally dry in the west to extremely wet in the southeast. Northern Bahamas was extremely wet to moderately dry and Belize normal in the east to exceptionally dry in the north.

 

July to September 2026

Conditions throughout the eastern Caribbean were normal to below normal over the three month period. Trinidad and Antigua were normal to severely dry; Tobago slight to exceptionally dry; Grenada and St Thomas exceptionally dry; Barbados slight to severely dry; St Vincent exceptional to extremely dry; Saint Lucia severe to exceptionally dry; Martinique, St Kitts and Dominica exceptional to moderately dry; Guadeloupe exceptionally dry to normal; St Maarten exceptionally dry to normal; Anguilla extremely dry to normal; St Croix exceptional to severely dry and St Thomas exceptionally dry. In the Guianas, conditions ranged from exceptionally dry over most of the area to very wet in northeastern Guyana. Aruba and Curacao were exceptional to moderately dry. Puerto Rico was normal ranging to exceptionally dry in western and eastern areas. The Dominican Republic ranged from exceptionally dry to normal. Jamaica was exceptionally dry over much of the island to very wet in the north. Grand Cayman was normal to slightly dry. Cuba was normal to exceptionally dry. Northern Bahamas was exceptionally dry to normal and Belize normal in central areas to exceptionally dry in the north and to severely dry in the south.

 

April to September 2026

Over the six month period conditions throughout the eastern Caribbean were normal to below normal. Trinidad was slight to severely dry; Tobago, Saint Lucia, St Maarten and Anguilla moderate to exceptionally dry; Grenada and St Thomas exceptionally dry; Barbados, Saint Lucia and Antigua moderate to extremely dry; St Vincent, St. Kitts and St. Croix exceptional to extremely dry; Martinique exceptional to moderately dry; Dominica and Guadeloupe exceptionally dry to normal; Antigua, St Maarten and Anguilla moderate to extremely dry.In the Guianas, conditions ranged from exceptionally dry in southern Guyana and northwest Suriname to exceptionally wet in northern parts of Guyana. Aruba exceptional to moderately dry and Curacao exceptional to slightly dry. Puerto Rico was predominantly normal to exceptionally dry in the west and east and to slightly wet in the northwest. The Dominican Republic was very wet to exceptionally dry. Jamaica was exceptionally dry in the south to moderately wet in the north. Grand Cayman was severely dry. Cuba was exceptionally dry in the west ranging to moderately wet in the southeast. Northern Bahamas was exceptionally dry to normal and Belize normal in central areas to exceptionally dry in the north and to moderately dry in the south.

 

October 2025 to September 2026

Predominantly normal to below normal conditions were experienced over the twelve month period throughout the eastern Caribbean, except for Trinidad which was moderately wet in the south to extremely dry in the north. Tobago was moderate to extremely dry; Grenada and St Vincent exceptionally dry; Barbados and Antigua normal to moderately dry; Saint Lucia predominantly exceptional to extremely dry; Martinique and Anguilla moderate to exceptionally dry; Dominica and Guadeloupe exceptionally dry to normal; St Kitts exceptional to severely dry; St Maarten normal to extremely dry; St Croix extremely dry and St Thomas moderately dry. Conditions in the Guianas ranged from exceptionally dry to exceptionally wet. Aruba and Curacao were exceptional to moderately dry. Puerto Rico ranged from very wet in the north to exceptionally dry in the extreme west and east. The Dominican Republic ranged from exceptionally wet to moderately dry. Jamaica was moderately dry in the southwest ranging to moderately wet in the north. Grand Cayman was moderately dry. Cuba ranged from exceptionally dry in the west to extremely wet in the southeast. Northern Bahamas was moderately dry to slightly wet and Belize rangedfrom mostly normal to exceptionally dry in the north and to moderately dry in the south.

 

October 2024 to September 2026

Over the two year period conditions throughout the eastern Caribbean were predominantly normal to below normal. Trinidad was exceptionally wet in the south ranging to extremely dry in the north; Tobago slight to extremely dry; Grenada and St Vincent extreme to exceptionally dry; Barbados moderately dry; Saint Lucia and Martinique moderate to exceptionally dry; Dominica exceptionally dry to slightly wet. Guadeloupe exceptionally dry to normal; Antigua normal to moderately dry; St Kitts and St Croix severe to moderately dry; St Maarten normal to exceptionally dry; Anguilla moderate to exceptionally dry and St Thomas normal. In the Guianas, conditions ranged from mostly normal to extremely wet in northwestern and northeastern Guyana and eastern French Guiana to extremely dry in northcentral and southeastern French Guiana. Aruba was severe to extremely dry and Curacao severe to exceptionally dry. Puerto Rico was exceptionally dry in the southwest to extremely wet in the north. The Dominican Republic was mostly normal ranging to exceptionally wet in the south and north and to exceptionally dry in the west. Jamaica was mostly normal ranging to moderately wet in central areas and to extremely dry in the northeast. Grand Cayman moderate to severely dry. Cuba was exceptionally dry in the west ranging to normal in east central areas. Northern Bahamas was severely dry to slightly wet and Belize slightly wet in central areas ranging to moderately dry in the south and to extremely dry in the north.

 

Disclaimer

The information contained herein is provided with the understanding that The Caribbean Institute for Meteorology and Hydrology makes no warranties, either expressed or implied, concerning the accuracy, completeness, reliability, or suitability of the Outlook. The information may be used freely by the public with appropriate acknowledgement of its source, but shall not be modified in content and then presented as original material.