September weather forecast
Piarco, Trinidad and Tobago

As the year starts winding down, Piarco's weather in September notes a slight decline in rainfall. This brings relief from the heavy rainfall experienced in August and hints towards a dry season. The highest and lowest temperatures for the month offer warm conditions amidst an overall cooling trend. Remarkably, the September daylight hours start to recede, subtly marking the beginning of the year's end. Overall, the Piarco weather in September is a pleasant blend of the wet and dry seasons.

Temperature

With average temperatures fluctuating between a high of 30.1°C (86.2°F) and a low of 26.5°C (79.7°F), September stands out as the warmest month.

Heat index

September's heat index is computed to be a fiery hot 37°C (98.6°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

In September, the rain falls for 19.9 days. Throughout September, 78mm (3.07") of precipitation is accumulated. Throughout the year, there are 194.8 rainfall days, and 640mm (25.2") of precipitation is accumulated.

Daylight

In Piarco, the average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 05:55 and sunset at 18:14. On the last day of September, sunrise is at 05:54 and sunset at 17:56 AST.

Sunshine

The average sunshine in September is 11h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Piarco. 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 unsafe exposure to UV radiation for the average person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Enhance your sun protection with tightly woven, yet airy clothing.