September weather forecast
Guardalavaca, Cuba

In September, Guardalavaca experiences another rainfall peak reaching 56mm (2.2"), indicating the second phase of the rainy season. Despite the increase in rain, the temperature drops only slightly from the summer peak, maintaining the warmth throughout the month. The sea temperature remains at a cozy 29°C (84.2°F), thereby retaining beach activities as a favored pastime. Amidst the showers, the days are generally sunny and the nights pleasantly cool. September's weather offers a distinctive blend of warm, sunny, and rainy days that are uniquely charming.

Temperature

During September, Guardalavaca records an average high-temperature of a still hot 30.5°C (86.9°F), marking a slight divergence from August's 31°C (87.8°F). Guardalavaca registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 26.2°C (79.2°F) during September.

Heat index

The heat index in September is estimated at a fiery hot 38°C (100.4°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. 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. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In September, the average relative humidity in Guardalavaca is 77%.

Rainfall

In Guardalavaca, in September, it is raining for 15.9 days, with typically 56mm (2.2") of accumulated precipitation. In Guardalavaca, during the entire year, the rain falls for 186.6 days and collects up to 480mm (18.9") of precipitation.

Sea temperature

July through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Guardalavaca.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

In September, the average length of the day in Guardalavaca is 12h and 16min.
On the first day of September, sunrise is at 06:47 and sunset at 19:19. On the last day of the month, sunrise is at 06:54 and sunset at 18:51 CDT.

Sunshine

The average sunshine in September in Guardalavaca is 10.9h.

UV index

The months with the highest UV index are April through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be mindful! Sand and water reflections can up the Sun's UV exposure.