The TT Meteorological Service (TTMS) has issued a localised flood alert.
The TTMS says moisture and low-level instability will continue to produce precipitation across Trinidad and activity will increase over Tobago.
This activity will exacerbate conditions already under water.
The TTMS says conditions will improve later today but overnight rainfall will add to the accumulation.
At this time, all major rivers are contained, but smaller water courses are quickly reaching their holding capacity.
Street and flash flooding can be expected in areas under heavy showers and thunderstorms.
Localized flooding and ponding is expected in areas that are already saturated. Landslips and landslides are possible favouring Tobago.