September weather forecastSan Rafael, Cuba

Weather in September

September, the first month of the autumn in San Rafael, is still a hot month, with an average temperature ranging between min 23.1°C (73.6°F) and max 32.4°C (90.3°F).

Temperature

The arrival of September coincides with an average high-temperature of a still hot 32.4°C (90.3°F), indicating a minimal shift from August's 33.6°C (92.5°F). San Rafael experiences an average low-temperature reading of 23.1°C (73.6°F) throughout September.

Heat index

In September, the average heat index is calculated to be a burning hot 46°C (114.8°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In September, the average relative humidity is 80%.

Rainfall

In September, the rain falls for 14.2 days. Throughout September, 37mm (1.46") of precipitation is accumulated. In San Rafael, during the entire year, the rain falls for 150.7 days and collects up to 261mm (10.28") 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 06:48 and sunset at 19:20. On the last day of September, sunrise is at 06:55 and sunset at 18:53 CDT.

Sunshine

In San Rafael, Cuba, the average sunshine in September is 10.9h.

UV index

The months with the highest UV index in San Rafael are April through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.