Trough To Affect T&T On Saturday [5-Day Weather Outlook]

According to the Trinidad and Tobago Meteorological Service (TTMS), the axis of a Tropical Wave, which passed last night (Thursday 30th October, 2025), is now to the near-West of Trinidad and Tobago and is moving away, with trailing instability still expected to be affecting most of the Lesser Antilles today (Friday 31st October, 2025).

The axis of a closely-following trough is presently near 58W and is moving Westward at approximately 10 kts. Moderate convective activity associated with this trough is expected to cross Trinidad and Tobago and the Windward and Southern Leeward Islands tomorrow (Saturday 1st November, 2025), with medium chances for isolated heavy showers or thunderstorms.

Increased surface convergence and moisture build-up generally over the Southern Windward Islands on Tuesday (4th November, 2025) and Wednesday (5th November, 2025) are likely to produce medium to high chances for heavy showers or thunderstorm activity.

Looking Beyond This Outlook Period 

  • At this time, no significant features or cyclonic developments have been analyzed in the Area of Interest for the seven (7) days following this outlook period, except for intermittent equatorial convergence and associated moisture advection.
  • These early analyses so far into the future are subjected to much variation as time progresses. The Met Office said it will continue to analyze and monitor all developments, or possible developments, within our Area of Interest.

Seas

  • The wind waves in the open waters to the near-East and Northeast of Trinidad and Tobago are expected to be 2m to 2.5m, peaking to 2.5m on Saturday (1st) and Sunday (2nd), during this outlook period.

Wind

  • The wind in the near-surface to the lower mid-level over Trinidad and Tobago and the Southern Windward Islands (2,000 ft to 5,000 ft), is expected to be 20 kts to 25 kts on Saturday (1st) and further to 25 kts to 30 kts on Sunday (2nd) and between 15 kts to 20 kts for the remainder of this outlook period. Direction is expected to be generally Easterly during this outlook period.

Dust

  • High dust concentrations in the atmosphere are expected from Saturday (1st) until Monday (3rd), after which, mostly moderate concentrations are expected for the remainder of this outlook period. Sensitive persons are advised to take the necessary precautions.

Synopsis And 5-Day Outlook

  • A trough on Saturday (1st) is expected to result in moderate convective activity over Trinidad and Tobago and the Windward and Southern Leeward Islands, with medium chances for isolated heavy showers or thunderstorms.
  • Intermittent periods of increased surface convergence and moisture build-up generally over the Southern Windward Islands on Tuesday (4th) and Wednesday (5th) are likely to produce medium to high chances for heavy showers or thunderstorm activity.

Saturday (1st November, 2025) 

  • Trinidad and Tobago: Partly cloudy, to at times, cloudy periods from early morning, initially over Tobago and Eastern Trinidad and then eventually over Trinidad by late morning, with a few light to moderate showers and a medium chance for isolated thunderstorm activity.
  • The remainder of the Lesser Antilles: Partly cloudy, becoming cloudy at times in some areas, with light to moderate showers over varying areas, and medium to high chances for a few heavy showers or isolated thunderstorms.

Sunday (2nd November, 2025) 

  • Trinidad and Tobago: Fair to partly cloudy at times with a few light to moderate showers, mainly over Trinidad.
  • The remainder of the Lesser Antilles: Mostly fair with brief showers over varying areas, especially near hilly areas.

Monday (3rd November, 2025) 

  • Trinidad and Tobago: Fair to partly cloudy at times with a few light to moderate showers and a low chance for an isolated heavy shower during the afternoon, mainly over Trinidad.
  • The remainder of the Lesser Antilles: Mostly fair with brief showers over varying areas, especially near hilly areas.

Tuesday (4th November, 2025) 

  • Trinidad and Tobago: Partly cloudy to cloudy at times with a few light to moderate showers and a medium to high chance for a heavy shower or isolated thunderstorm over Trinidad.
  • The remainder of the Lesser Antilles: Mostly fair with brief showers over varying areas and a low chance for an isolated heavy shower, especially near hilly areas.

Wednesday (5th November, 2025) 

  • Trinidad and Tobago: By mid to late morning, partly cloudy to cloudy conditions are expected, with light to moderate showers and a medium to high chance for heavy showers or thunderstorm activity over both Trinidad and Tobago.
  • The remainder of the Lesser Antilles: Mostly fair with brief showers over varying areas and a low chance for an isolated heavy shower, especially near hilly areas.

The TTMS said it continues to analyze and monitor all developments within the Area of Interest. 

Please continue to pay attention to the latest forecasts, alerts, and information issued by the TTMS.

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