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September Weather in Trinidad, United States

Last updated: June 24, 2025

In September, the average temperature in Trinidad, United States hovers around 18°C (65°F), but be prepared for a range that can dip to a chilly -3°C (28°F) or soar up to a warm 35°C (95°F). Expect a total precipitation of 29 mm (1.2 in) over 5 days, accompanied by an average humidity level of 80%.

September Temperature in Trinidad

In September in Trinidad, the average temperature is 18°C (65°F), with maximums reaching up to 35°C (95°F) and minimums dropping as low as -3°C (28°F). This wide range of temperatures makes it essential for travelers to pack a variety of clothing to prepare for different weather conditions.

September Weather in Trinidad: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Trinidad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trinidad, September typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (95°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec303241475768727065504032
Data source: Temperature data for Trinidad generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Trinidad

In Trinidad in September, the precipitation amount is 29 mm (1.2 in) over a period of 5 days.

September Precipitation Trends in Trinidad

The chart displays monthly precipitation patterns in Trinidad, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Trinidad, September typically receives around 29 mm (1.2 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec241841497133564429311319
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trinidad

In Trinidad in September, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.

September Average Humidity in Trinidad

This chart illustrates the average monthly humidity levels in Trinidad, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Trinidad is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%76%64%61%71%75%75%80%80%78%76%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trinidad

In Trinidad in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Trinidad.

Maximum UV Index Levels in Trinidad for September

The chart shows the monthly maximum UV Index (UVI) for Trinidad in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Trinidad typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469111113131110854
Data source: Trinidad September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Trinidad Compares to Other Months

Weather in Trinidad varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Trinidad, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Trinidad, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)24 mm (0.9 inches)73%moderate
February Weather0°C (33°F)18 mm (0.7 inches)76%high
March Weather5°C (41°F)41 mm (1.6 inches)64%very high
April Weather8°C (48°F)49 mm (1.9 inches)61%extreme
May Weather14°C (57°F)71 mm (2.8 inches)71%extreme
June Weather20°C (68°F)33 mm (1.3 inches)75%extreme
July Weather22°C (72°F)56 mm (2.2 inches)75%extreme
August Weather21°C (71°F)44 mm (1.7 inches)80%extreme
September Weather18°C (65°F)29 mm (1.2 inches)80%very high
October Weather10°C (50°F)31 mm (1.2 inches)78%very high
November Weather5°C (41°F)13 mm (0.5 inches)76%moderate
December Weather0°C (32°F)19 mm (0.7 inches)78%moderate

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