September weather forecast
Santiago de Las Vegas, Cuba

September, the first month of the autumn in Santiago de Las Vegas, 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

September's onset records a minor alteration in the average high-temperature to a still tropical 31.5°C (88.7°F) from August's 32.4°C (90.3°F). In the month of September, the average low-temperature in Santiago de Las Vegas, Cuba, usually rests at a moderately hot 24.1°C (75.4°F).

Heat index

For most parts of September, the heat index is calculated to be an extremely hot 43°C (109.4°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

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

Rainfall

In Santiago de Las Vegas, during September, the rain falls for 25.2 days and regularly aggregates up to 105mm (4.13") of precipitation. Throughout the year, in Santiago de Las Vegas, there are 204.8 rainfall days, and 802mm (31.57") of precipitation is accumulated.

Daylight

The average length of the day in September in Santiago de Las Vegas, Cuba, is 12h and 16min.
On the first day of the month, sunrise is at 07:12 and sunset at 19:46. On the last day of September, sunrise is at 07:21 and sunset at 19:17 CDT.

Sunshine

In September, the average sunshine is 8.9h.

UV index

March through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. 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. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.