September weather forecast
Cayo Largo del Sur, Cuba

Possessing features similar to its preceding and following months, September in Cayo Largo del Sur is a period of high summer. Bearing witness to soaring day temperatures and a significant volume of rain, the town remains lively. The city's seas, glowing at 30°C (86°F), continue to be a crowd puller for locals and tourists. However, a gradual decline in daylight hours and the overall amount of sunshine is evident. Cementing September as a wet month is its intense rainfall of 199mm (7.83"), courtesy of an avid monsoon season.

Temperature

June through September, with an average high-temperature of 32°C (89.6°F), are the warmest months.

Rainfall

September is the month with the most rainfall. Rain falls for 15 days and accumulates 199mm (7.83") of precipitation.

Sea temperature

The months with the warmest seawater are August and September, with an average sea temperature of 30°C (86°F).
Note: Water temperatures higher than 30°C (86°F) might not provide the relief swimmers often seek.

Daylight

In Cayo Largo del Sur, the average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 07:09 and sunset at 19:42. On the last day of September, sunrise is at 07:17 and sunset at 19:14 CDT.

Sunshine

The average sunshine in September is 8h.

UV index

The average daily maximum UV index in September is 11. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 11 during September translates into the following guidance:
Adopt every vital precaution, unprotected skin and eyes may burn rapidly. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. A sunscreen with at least SPF 30 should be used liberally and reapplied frequently on cloudy days, especially after swimming or an outdoor workout. Caution! Sand and water surfaces escalate the UV intensity from the Sun.