September weather forecast
Trinidad and Tobago

September in Trinidad and Tobago marks the peak of the wet season, characterized by substantial rainfall and consistently warm temperatures. Throughout this month, temperatures typically vary from a mild 24°C (75.2°F) in the early morning to approximately 31°C (87.8°F) during the day's peak. While September does not claim the status of being the hottest or the coldest month, it does contribute to the country's year-round warm and tropical climate.

Both Port of Spain, the capital of Trinidad, and Scarborough, the principal city in Tobago, mirror the national climate conditions for September. These coastal cities experience similar temperature ranges and benefit from the cooling influence of the sea, leading to refreshing sea breezes that help to moderate the heat.

September sees the highest rainfall levels of the year, with average precipitation typically ranging from 200mm (7.87") to 250mm (9.84"). Rain showers are a daily occurrence, and they can be long-lasting. Despite the high rainfall, periods of sunshine still break through the clouds, ensuring the climate is not persistently wet.

Wind speeds in September are moderate, generally averaging 20km/h (12.4mph). Influenced by the northeast trade winds, the breeze helps to offset the high temperatures and humidity associated with the wet season. While September is within the Atlantic hurricane season, Trinidad and Tobago's southern position generally reduces the likelihood of severe weather events.

Visiting Trinidad and Tobago in September is for those who do not mind regular rain showers. Although the country does not host any significant cultural events during this month, the weather promotes a lush and vibrant natural environment. It is an ideal period for tourists who prefer a more tranquil environment, as the wetter weather leads to fewer visitors, and the island's flora and fauna are in full bloom.

---

• Port of Spain - September »
  In Port of Spain, Trinidad and Tobago, in September, the average water temperature is 29°C (84.2°F). September in Port of Spain is marked by an average high-temperature of a still tropical 32.2°C (90°F), almost identical to the preceding month.
• San Fernando - September »
  Temperature records in San Fernando mark September as the warmest month, with highs averaging 30.5°C (86.9°F) and lows at 26.5°C (79.7°F). In San Fernando during September, the rain falls for 18.8 days and regularly aggregates up to 61mm (2.4") of precipitation.
• Chaguanas - September »
  September ushers in a gradual decrease in overall rainfall to 78mm (3.07") while the high temperature touches 30.1°C (86.2°F) making this one of the warmest months in Chaguanas. Chaguanas's temperature records reveal September as the warmest month, marked by average highs of 30.1°C (86.2°F) and lows of 26.5°C (79.7°F).
• Arima - September »
  In Arima, during September, the rain falls for 19.9 days and regularly aggregates up to 78mm (3.07") of precipitation. The average relative humidity in September in Arima, Trinidad and Tobago, is 77%.
• Couva - September »
  August and September, with an average of 11.1h of sunshine, are months with the most sunshine in Couva, Trinidad and Tobago. September temperatures in Couva, Trinidad and Tobago, vary between a high-temperature of 30.5°C (86.9°F) and a low-temperature of 26.5°C (79.7°F).
• Point Fortin - September »
  August and September, with an average of 11.1h of sunshine, are months with the most sunshine in Point Fortin, Trinidad and Tobago. In Point Fortin the average seawater temperature in September is 29.3°C (84.7°F).
• Sangre Grande - September »
  In Sangre Grande, during September, the rain falls for 19.9 days and regularly aggregates up to 78mm (3.07") of precipitation. With an average high-temperature of 30.1°C (86.2°F) and an average low-temperature of 26.5°C (79.7°F), September is the warmest month in Sangre Grande.
• Scarborough - September »
  The months with the warmest seawater in Scarborough are August and September, with an average sea temperature of 29.4°C (84.9°F). On the last day of September, in Scarborough, sunrise is at 05:51 and sunset at 17:54 AST.
• Penal - September »
  With an average high-temperature of 30.5°C (86.9°F) and an average low-temperature of 26.5°C (79.7°F), September is the warmest month in Penal, Trinidad and Tobago. The average high-temperature and low-temperature in Penal during September are 30.5°C (86.9°F) and 26.5°C (79.7°F) respectively.
• Diego Martin - September »
  In Diego Martin during September, the rain falls for 19.9 days and regularly aggregates up to 78mm (3.07") of precipitation. Diego Martin's temperatures tend to reach their peak averages in September, with a high of 30.1°C (86.2°F) and a low of 26.5°C (79.7°F).