Key Climate Messages for September to November 2026

Regional technical bulletin from the Caribbean Institute for Meteorology and Hydrology on expected climate conditions across the Caribbean from September to November 2026. The resource indicates that a very strong El Niño event is likely to persist throughout the period and into early 2027, reducing rainfall frequency and increasing drought risk. For the remainder of the hurricane season, 3 to 8 named storms are forecast, including approximately 2 to 5 hurricanes and 1 or 2 major hurricanes. Regional rainfall deficits, expanding long-term drought, a persistent risk of flooding and flash floods, and above-normal excessive heat during September and October are also anticipated.