September Weather in Arima, Trinidad and Tobago

Last updated: August 31, 2025

The average temperature in Arima, Trinidad and Tobago during September hovers around 27°C (81°F), with a comfortable minimum of 25°C (77°F) and a pleasant maximum of 31°C (87°F). Expect 138 mm (5.4 in) of precipitation spread over roughly 23 days, contributing to a high average humidity level of 79%.

September Temperature in Arima

In September in Arima, the average temperature is 27°C (81°F). Maximum temperatures can reach 31°C (87°F) and the minimum can dip to as low as 25°C (77°F). This mild and warm climate makes Arima an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates September temperature patterns in Arima, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arima, September typically has an average temperature of 27°C (81°F), with highs reaching up to 31°C (87°F) and lows dropping to around 25°C (77°F).

Data source: Temperature data for Arima generated using information from the Copernicus Climate Change Service.

September Precipitation in Arima

In Arima in September, the total precipitation amount is 138 mm (5.4 in) spread across 23 days.

September Precipitation Trends in Arima

The chart displays monthly precipitation patterns in Arima, 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 Arima, September typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 23 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Arima

In Arima in September, humidity is 79%. With an average temperature of 27°C (81°F), this humidity feels like a warm and sticky embrace, making travel both challenging and invigorating as the air clings to your skin, urging you to seek shade or a refreshing drink.

September Average Humidity in Arima

This chart illustrates the average monthly humidity levels in Arima, 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 Arima is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Arima

In Arima in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Arima, you can check here.

Maximum UV Index Levels in Arima for September

The chart shows the monthly maximum UV Index (UVI) for Arima 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 Arima typically reaches 14, which falls under the extreme exposure category.

Data source: Arima 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 Arima Compares to Other Months

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

This table compares monthly weather conditions in Arima, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	68 mm (2.7 inches)	78%	extreme
February Weather	25°C (77°F)	51 mm (2.0 inches)	77%	extreme
March Weather	25°C (78°F)	50 mm (2.0 inches)	76%	extreme
April Weather	26°C (79°F)	30 mm (1.2 inches)	75%	extreme
May Weather	26°C (80°F)	76 mm (3.0 inches)	76%	extreme
June Weather	26°C (79°F)	149 mm (5.9 inches)	80%	extreme
July Weather	26°C (79°F)	179 mm (7.0 inches)	83%	extreme
August Weather	27°C (80°F)	178 mm (7.0 inches)	80%	extreme
September Weather	27°C (81°F)	138 mm (5.4 inches)	79%	extreme
October Weather	27°C (80°F)	188 mm (7.4 inches)	79%	extreme
November Weather	26°C (80°F)	143 mm (5.6 inches)	81%	extreme
December Weather	26°C (79°F)	131 mm (5.1 inches)	80%	very high