The Met Office is monitoring a tropical wave, which is expected to reach T&T on Saturday evening.
The tropical wave left the West African coast on April 30th and on Wednesday was around over 2,800 kilometres east of the Lesser Antilles.
While it does not appear to be very active, Met said there could still be some showers and thunderstorms.
The Met Office said if there is any measurable amount of rain according to its criteria, the 2023 rainy season will be declared for TT.
It has also issued a yellow-level hazardous sea alert in which conditions are being monitored until 2 pm on Saturday.
The severity is expected to be moderate. The northern and eastern coastal areas of Tobago and the northern, eastern and western coastal areas of Trinidad are under this alert.
It said long-period swells are expected to affect the northern and eastern coastal areas of TT and to a lesser extent, the western coastal areas of Trinidad and with the presence of spring tides, occasional battering waves in these areas can occur, especially during high tides.
The Met Office said those who are venturing these areas should monitor near-shore and coastal sea conditions and exercise caution, especially at high tides.
It will also continue to closely monitor the tropical wave and keep people informed.
People are asked to continue to monitor updates at www.metoffice.gov.tt and access more information and instructions from www.odpm.gov.tt