September weather forecast
San Jose de las Lajas, Cuba

September, the first month of the autumn in San Jose de las Lajas, is still a tropical month, with an average temperature ranging between max 31.2°C (88.2°F) and min 23.9°C (75°F).

Temperature

With September's arrival, San Jose de las Lajas's weather records an average high-temperature of a still hot 31.2°C (88.2°F), marking little difference from August's 32.3°C (90.1°F). Throughout September, San Jose de las Lajas registers a consistent average low-temperature of 23.9°C (75°F).

Heat index

The average heat index in September is estimated at a blisteringly hot 42°C (107.6°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. 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 extremely significant for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The months with the highest humidity are September and October, with an average relative humidity of 81%.

Rainfall

In San Jose de las Lajas, during September, the rain falls for 16.6 days and regularly aggregates up to 49mm (1.93") of precipitation. Throughout the year, there are 170.1 rainfall days, and 533mm (20.98") of precipitation is accumulated.

Daylight

In San Jose de las Lajas, Cuba, the average length of the day in September is 12h and 16min.
On the first day of September, sunrise is at 07:11 and sunset at 19:45. 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

April 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 vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.