The Trinidad and Tobago Meteorological Service (TTMS) has officially declared the start of the 2026 wet season, marking the transition from the dry season with the arrival of the first tropical wave of the year.

The declaration was made on Tuesday 5th May 2026, following measurable rainfall recorded across parts of the country earlier in the day.

According to the TTMS, the official start of the wet season is marked by measurable rainfall of at least 0.1mm, attributed to either a Tropical Wave or the Inter-Tropical Convergence Zone (ITCZ) — the primary drivers of rainfall for Trinidad and Tobago.