September weather forecast
Santa Clara, Cuba

September marks the shift towards autumn; however, Santa Clara, Cuba, maintains its tropical climate. A slight drop in temperature from the peak of summer can be observed. Rainfall inches upward to its highest point at 130mm (5.12"), which balances the onset of cooler temperatures. The ample sunshine and occasional showers create an appealing atmosphere for those who prefer a mix of sun and rain.

Temperature

The transition into September marks the average high-temperature at a still tropical 30.5°C (86.9°F), differing minimally from August's 31.6°C (88.9°F). Santa Clara's temperature drops to an average low of 23.2°C (73.8°F) during the nights of September.

Heat index

September's heat index is estimated at a blisteringly hot 41°C (105.8°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

September and October, with an average relative humidity of 84%, are the most humid months.

Rainfall

In Santa Clara, in September, it is raining for 26.5 days, with typically 130mm (5.12") of accumulated precipitation. In Santa Clara, Cuba, during the entire year, the rain falls for 226.2 days and collects up to 918mm (36.14") of precipitation.

Daylight

The average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 07:02 and sunset at 19:36. On the last day of September, in Santa Clara, sunrise is at 07:11 and sunset at 19:07 CDT.

Sunshine

In September, the average sunshine in Santa Clara, Cuba, is 9h.

UV index

The months with the highest UV index in Santa Clara are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.