The Trinidad and Tobago Meteorological Service has issued an Adverse Weather Warning and has raised the level to yellow.
The warning runs until 8pm tonight.
The Met Office describes the weather activity as isolated thunderstorms occurring mainly across the northwestern and southeastern areas of Trinidad.
There is a 60% chance that conditions will worsen across other areas of Trinidad with a lower chance for Tobago, during the course of the afternoon.
Conditions are expected to improve by nightfall.
Persons should monitor weather conditions and updates from official sources. Plan safety measures. Follow the instructions of government officials.
A hazardous seas alert is also in effect.