September weather forecast
Arima, Trinidad and Tobago

The decline in rainfall commences in September, resulting in modest temperature fluctuation. The city of Arima witnesses a slight increase in temperature averages and sunshine durations compared to August. Contrariwise, wind speeds pick up the pace slightly, bringing a refreshing counterbalance to the warm temperature. As expected in decreasing rainfall, September's cloud cover lessens. The rainfall amount undergoes a notable drop to 78mm (3.07") on an average of 19.9 rainy days.

Temperature

The warmest period in Arima tends to be September, when average temperatures fluctuate between a high of 30.1°C (86.2°F) and a low of 26.5°C (79.7°F).

Heat index

The heat index in September is calculated to be a fiery hot 37°C (98.6°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in September in Arima is 77%.

Rainfall

In September, the rain falls for 19.9 days. Throughout September, 78mm (3.07") of precipitation is accumulated. In Arima, during the entire year, the rain falls for 194.8 days and collects up to 640mm (25.2") of precipitation.

Daylight

The average length of the day in September is 12h and 11min.
On the first day of September in Arima, Trinidad and Tobago, sunrise is at 05:55 and sunset at 18:14. On the last day of the month, sunrise is at 05:53 and sunset at 17:55 AST.

Sunshine

The average sunshine in September in Arima is 11h.

UV index

The months with the highest UV index in Arima, Trinidad and Tobago, are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.