September weather forecast
Guanabacoa, Cuba

September, the first month of the autumn in Guanabacoa, is also a hot month, with an average temperature fluctuating between 24.1°C (75.4°F) and 31.5°C (88.7°F).

Temperature

Guanabacoa, Cuba, notes an average high-temperature of a still tropical 31.5°C (88.7°F) in September, hardly diverging from August. In the month of September, Guanabacoa witnesses a consistent average low-temperature of 24.1°C (75.4°F).

Heat index

Throughout September, the heat index is estimated at an extremely hot 43°C (109.4°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. 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. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

September and October, with an average relative humidity of 80%, are the most humid months.

Rainfall

In September, the rain falls for 25.2 days. Throughout September, 105mm (4.13") of precipitation is accumulated. In Guanabacoa, during the entire year, the rain falls for 204.8 days and collects up to 802mm (31.57") of precipitation.

Daylight

In September, the average length of the day in Guanabacoa is 12h and 16min.
On the first day of September, sunrise is at 07:11 and sunset at 19:46. On the last day of the month, sunrise is at 07:20 and sunset at 19:16 CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 7 during September translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.