September weather forecast
Bartle, Cuba

The first month of the autumn, September, is still a tropical month in Bartle, Cuba, with an average temperature varying between 22.9°C (73.2°F) and 32.3°C (90.1°F).

Temperature

The transition from August to September sees an average high-temperature of a still tropical 32.3°C (90.1°F), indicating a minor variance from the prior month. In September, the average low-temperature records at a pleasant 22.9°C (73.2°F) during the nights.

Heat index

The heat index value during September is computed to be a blazing hot 47°C (116.6°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Heat index determinations are made taking into account the shade and light air movements. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In September, the average relative humidity in Bartle is 83%.

Rainfall

September is the month with the most rainfall in Bartle. Rain falls for 22 days and accumulates 127mm (5") of precipitation.

Daylight

In September, the average length of the day in Bartle is 12h and 16min.
On the first day of the month, sunrise is at 06:52 and sunset at 19:24. On the last day of September, sunrise is at 06:59 and sunset at 18:56 CDT.

Sunshine

The average sunshine in September is 10.4h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index in Bartle. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.