September weather forecast
Porus, Jamaica

September in Porus sees slight shifts in weather patterns. There is a subtle decline in both high and low temperatures from August. Corresponding to this, September experiences the highest yearly humidity level at 85%. Notably, September also witnesses the peak in rainfall for the year, stacking up to a consequential 190mm (7.48"). Despite shorter sunlight hours, the increased showers combined with high humidity define September as the wettest month.

Temperature

September's advent denotes a minor fluctuation in the average high-temperature to a moderately hot 29.3°C (84.7°F) from August's 30°C (86°F). Throughout September, Porus experiences a low-temperature average of 21.8°C (71.2°F).

Heat index

For September, the heat index is evaluated at a fiery hot 37°C (98.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In September, the average relative humidity is 85%.

Rainfall

In Porus, during September, the rain falls for 27.3 days and regularly aggregates up to 190mm (7.48") of precipitation. In Porus, during the entire year, the rain falls for 297.9 days and collects up to 1472mm (57.95") of precipitation.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of September in Porus, sunrise is at 05:55 and sunset at 18:23. On the last day of the month, sunrise is at 05:59 and sunset at 17:58 EST.

Sunshine

In September, the average sunshine in Porus is 9.8h.

UV index

In Porus, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in September leads to these recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.