The Met Office says roughs seas can be expected, beginning from within the next 24 hours.
It has issued a warning to small craft operators, sea-bathers and marine interests.
The following is a statement by the Met Office.
"Buoy data as well as reports reaching the Trinidad and Tobago Meteorological Service indicate that sea conditions being experienced around Trinidad and Tobago are currently normal to moderate with wave heights reaching up to 2.5 metres in open waters and less than 1.0 metre in sheltered areas.
However, sea conditions are expected to become more agitated from Thursday 19th October 2017.
The winds in the lower levels of the atmosphere are forecast to strengthen over the next 24 to 48 hours and consequently the sea conditions will become more disturbed.
Wave heights in open waters are forecast to increase to 3.0 metres on Thursday (19 th October 2017) and individual waves may peak in excess of 3.0 metres at times.
The exposed coastlines of Trinidad and Tobago, especially north and east coasts, are expected to be affected for at least 2 to 3 days.
Choppy seas may be experienced in sheltered areas particularly around Tobago.
Additionally, conditions may be further exacerbated during high tide. SMALL CRAFT OPERATORS, SEA BATHERS AND ALL OTHER MARINE INTERESTS ARE ASKED TO EXERCISE CAUTION IN ANY SEA RELATED ACTIVITIES.
The Trinidad and Tobago Meteorological Service is closely monitoring sea conditions and will issue an update at 12:00 p.m. tomorrow, 18 th October 2017, or earlier if the situation warrants."