September weather forecast
Mariel, Cuba

September presents a noticeable transition into a less aggressive weather pattern as Mariel inches closer to the end of the wet season. Although a strong likelihood of rain persists, the town observes a marginal drop in both temperatures and humidity. Interestingly, sea temperatures take a slight plunge to 29.6°C, offering a refreshing breather to Mariel's warmer summer months. Moreover, pressure picks up, promoting less volatile weather and forecasting a shift towards the cooler end of the year.

Temperature

The arrival of September sees an average high-temperature of a still hot 30.6°C, hardly diverging from August's 31.6°C. Nights in September in Mariel exhibit a minor reduction to an average low temperature of 25.7°C.

Heat index

During September, the heat index is calculated to be a torrid 39°C. Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 17.5 days. Throughout September, 63mm of precipitation is accumulated. In Mariel, during the entire year, the rain falls for 144.5 days and collects up to 485mm of precipitation.

Sea temperature

In Mariel, in September, the average water temperature is 29.6°C.
Note: In water activities such as swimming and diving, temperatures from 25°C to 29°C are deemed highly pleasurable for extended periods without any unease.

Daylight

The average length of the day in September in Mariel, Cuba, is 12h and 16min.
On the first day of the month, sunrise is at 07:13 and sunset at 19:48. On the last day of September, sunrise is at 07:22 and sunset at 19:19 CDT.

Sunshine

In September, the average sunshine is 9.3h.

UV index

The months with the highest UV index in Mariel are March through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Enhance your sun protection with tightly woven, yet airy clothing. Caution! Sand and water surfaces escalate the UV intensity from the Sun.