September weather forecast
Vertientes, Cuba

The first month of the autumn, September, is still a hot month in Vertientes, Cuba, with an average temperature ranging between max 31.9°C (89.4°F) and min 23.2°C (73.8°F).

Temperature

The arrival of September sees a recorded average high-temperature of a still tropical 31.9°C (89.4°F), showing little divergence from the previous month's conditions. During September nights, Vertientes records an average temperature of 23.2°C (73.8°F).

Heat index

In September, the heat index is calculated to be a life-threatening hot 45°C (113°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Vertientes, the average relative humidity in September is 83%.

Rainfall

In Vertientes, Cuba, in September, it is raining for 21.5 days, with typically 98mm (3.86") of accumulated precipitation. In Vertientes, Cuba, during the entire year, the rain falls for 191.7 days and collects up to 672mm (26.46") of precipitation.

Daylight

In September, the average length of the day in Vertientes is 12h and 16min.
On the first day of September in Vertientes, sunrise is at 06:56 and sunset at 19:28. On the last day of the month, sunrise is at 07:03 and sunset at 19:01 CDT.

Sunshine

In September, the average sunshine in Vertientes is 9.7h.

UV index

The months with the highest UV index in Vertientes are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.