September weather forecast
Mahahual, Mexico

The first month of the autumn, September, is still a tropical month in Mahahual, Mexico, with an average temperature varying between 31.5°C (88.7°F) and 24.4°C (75.9°F).

Temperature

Mahahual marks the onset of September with an average high-temperature of a still tropical 31.5°C (88.7°F), a subtle shift from August's 31.8°C (89.2°F). An average nighttime temperature of 24.4°C (75.9°F) is observed during September.

Heat index

September's average heat index is calculated to be a blisteringly hot 43°C (109.4°F). Eyes open: Heat cramps and heat exhaustion are expected. Prolonged exertion could lead to heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. 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 particularly relevant to children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Mahahual, the average relative humidity in September is 81%.

Rainfall

In Mahahual, Mexico, during September, the rain falls for 23.1 days and regularly aggregates up to 96mm (3.78") of precipitation. In Mahahual, during the entire year, the rain falls for 198.4 days and collects up to 752mm (29.61") of precipitation.

Daylight

In Mahahual, the average length of the day in September is 12h and 14min.
On the first day of September in Mahahual, sunrise is at 6:36 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:39 pm EST.

Sunshine

In September, the average sunshine in Mahahual, Mexico, is 8.5h.

UV index

The months with the highest UV index in Mahahual are March through July and September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high UV index of 7 in September translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.