T&T 5-Day Weather Outlook: Tuesday To Saturday
According to the Trinidad and Tobago Meteorological Service (TTMS), a well-formed and relatively strong North Atlantic high pressure cell is expected to continue pushing moderately strong winds across the Tropical Atlantic, transporting varying concentrations of Saharan dust across Trinidad and Tobago and the Lesser Antilles during this outlook period (Tuesday 9th June to Saturday 13th June, 2026).
While the Inter-Tropical Convergence Zone (ITCZ) is likely to remain South of Trinidad, the passage of Tropical Waves is expected to cause some moisture to be modulated Northward across Trinidad and Tobago and the Southern Windward Islands, increasing convergence and cloudy periods with medium chances for isolated heavy showers or thunderstorm activity, between pre-dawn on Wednesday (10th June, 2026) and pre-dawn on Friday (12th June, 2026).
Tropical Waves, Troughs And Disturbances
- The axis of a Tropical Wave presently positioned near 43W is moving Westward at approximately 15 kts. At present motion, the associated weather will likely cross Trinidad and Tobago and the Southern Windward Islands by pre-dawn on Wednesday (10th June, 2026). There will be medium chances for isolated heavy showers or thunderstorm activity.
- The axis of a Tropical Wave presently positioned near 33W is moving Westward at approximately 15 kts to 20 kts. At present motion, the axis of this Wave is likely to reach Trinidad and Tobago and the Southern Windward Islands by Friday night (12th June, 2026) or Saturday (13th June, 2026). At this time, analysis is not indicating any significant weather associated with this Wave.
- A new Tropical Wave has been at this time analysed to be near 23W in the far-Eastern equatorial Atlantic.
- A recently emerging Tropical Wave off the West coast of Africa has been analysed to be near 17W.
Seas
- The wind waves in the open waters to the near-East and Northeast of Trinidad and Tobago are expected to be near 2m and occasionally 2.5m, with a period of six (6) to seven (7) seconds for this outlook period.
- In the event of heavy showers, seas are likely to become choppy.
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 mostly between 20 kts and 25 kts and occasionally near 30 kts, with a generally Easterly direction during this outlook period.
Dust
- Fluctuating concentrations of Saharan dust in the atmosphere between mild to moderate during this outlook period.
Forecast Synopsis And Outlook Over Next Five (5) Days
- Relatively high pressure across the Tropical Atlantic is expected to provide steady winds, being breezy to windy at times. There will be intermittent patches of moisture advection over the Leeward and Northern Windward Islands, with brief showers favouring hilly areas. Weather associated with a Tropical Wave between Tuesday night (9th June, 2026) and Thursday (11th June, 2026), is expected to produce partly cloudy to cloudy periods, with light to moderate showers and medium chances for isolated heavy showers or thunderstorms, over Trinidad and Tobago and the Southern Windward Islands.
Tuesday (9th June, 2026)
- Trinidad and Tobago: Fair, sunny and breezy to windy during the morning, becoming partly cloudy by the late morning to afternoon, with brief showers in varying areas and a low to medium chance for an isolated heavy shower. Brief showers will be increasing during the night.
- The remainder of the Lesser Antilles: Generally fair, hazy and breezy, with brief showers in some areas.
Wednesday (10th June, 2026)
- Trinidad and Tobago: Partly cloudy to cloudy at times, with light to moderate showers in varying areas. During the pre-dawn and early afternoon, there is a medium to high chance for heavy showers and thunderstorm activity over the South of Tobago, and Eastern to Southern near-offshore and coastal areas of Trinidad. During the afternoon, there is a medium chance for a heavy shower or isolated thunderstorm to develop over Western Trinidad.
- The remainder of the Lesser Antilles: Fair, becoming partly cloudy in a few areas, with brief moderate showers favouring hilly areas.
Thursday (11th June, 2026)
- Trinidad and Tobago and the Southern Windward Islands: Partly cloudy to cloudy, with light to moderate showers over varying areas. There is a medium to high chance for isolated heavy showers or thunderstorms.
- The remainder of the Lesser Antilles: Fair, becoming partly cloudy in a few areas, with brief moderate showers favouring hilly areas.
Friday (12th June, 2026)
- Trinidad and Tobago and the remainder of the Lesser Antilles: Partly cloudy over Trinidad during the pre-dawn and early morning, with brief showers over varying areas, and a low to medium chance for a moderate or heavy shower. Otherwise, a mostly fair and breezy to windy day, with brief showers over varying areas, and a low chance for a moderate to heavy shower near hilly areas.
Saturday (13th June, 2026)
- Trinidad and Tobago and the remainder of the Lesser Antilles: Fair and breezy to windy, with brief showers over varying areas and a low to medium chance for a moderate to heavy shower, especially near hilly areas.
Looking Beyond This Outlook Period
- The ITCZ is likely to remain just South of Trinidad during the next five (5) days following this outlook period. Extended analysis is indicating medium chances for the development of isolated heavy showers and thunderstorm activity between Thursday (18th June, 2026) and Monday (22nd June, 2026).
- These early analyses so far into the future are subjected to much variation as time progresses.
The TTMS said it continues to analyze and monitor all developments, or possible developments, within our Area of Interest.
Please continue to pay attention to the latest forecasts, alerts, and information issued by the TTMS.
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