September weather forecast
Leona Vicario, Mexico

The first month of the autumn, September, is also a hot month in Leona Vicario, Mexico, with an average temperature fluctuating between 26.5°C (79.7°F) and 30.5°C (86.9°F).

Temperature

September observes an average high-temperature of a still tropical 30.5°C (86.9°F), marking an insignificant difference from August's 31.1°C (88°F). During the month of September, Leona Vicario's average nighttime temperature closely mirrors its daytime counterpart, at a moderately hot 26.5°C (79.7°F).

Heat index

For most parts of September, the heat index is calculated to be a fiery hot 39°C (102.2°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. 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.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Leona Vicario, the average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 24.8 days. Throughout September, 130mm (5.12") of precipitation is accumulated. Throughout the year, in Leona Vicario, there are 227.4 rainfall days, and 1021mm (40.2") of precipitation is accumulated.

Daylight

In Leona Vicario, the average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 6:32 am and sunset at 7:04 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:37 pm EST.

Sunshine

In Leona Vicario, the average sunshine in September is 9h.

UV index

The months with the highest UV index in Leona Vicario are February through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.