The Met Service has officially declared the start of the 2025 Wet Season.

The official start of the season is signaled by the first measurable rainfall (≥ 0.1 mm) associated with a Tropical Wave or the Inter-Tropical Convergence Zone, as these features are the primary drivers of the seasonal rainfall over T&T.

The TTMS says while the main axis of the ITCZ remains to the south, deep tropical moisture associated with its broader environment has extended northward over T&T, contributing to increased atmospheric instability.

It says, “These conditions supported convective development across parts of the country today, with rainfall accumulations up to 2 p.m. recorded as follows: 18.8 mm at Matura, 15.6 mm at Mayaro, 2.8 mm at Piarco, 1.3 mm at Signal Hill and 0.5 mm at Buccoo.”

Meanwhile, the TTMS says the first tropical wave of the season recently moved off the west coast of Africa.

This is expected to move westward across the tropical Atlantic in the coming days.

On average, tropical waves take approximately five to seven days to reach the southern Caribbean or the northern coast of South America.

The TTMS says monitoring will continue, since not all TWs directly impact T&T.