September weather forecast
Nicolás Bravo, Mexico

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

Temperature

The arrival of September marks a slight shift to an average high-temperature of a still hot 31.5°C (88.7°F) from August's 31.8°C (89.2°F). During the nights in September, an average low-temperature of 24.4°C (75.9°F) is observed.

Heat index

During September, the heat index is calculated to be a blisteringly hot 43°C (109.4°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in September is 81%.

Rainfall

In Nicolás Bravo, during September, the rain falls for 23.1 days and regularly aggregates up to 96mm (3.78") of precipitation. Throughout the year, there are 198.4 rainfall days, and 752mm (29.61") of precipitation is accumulated.

Daylight

In Nicolás Bravo, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 6:41 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:44 pm EST.

Sunshine

In September, the average sunshine is 8.5h.

UV index

The months with the highest UV index 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 hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.