September weather forecast
San Bartolomé Ayautla, Mexico

September, the first month of the autumn in San Bartolomé Ayautla, is still a tropical month, with an average temperature varying between 30.8°C (87.4°F) and 21.1°C (70°F).

Temperature

The unfolding of September shows an average high-temperature of a still hot 30.8°C (87.4°F), indicating a slight variance from August's 31.8°C (89.2°F). San Bartolomé Ayautla observes an average low-temperature of 21.1°C (70°F) during September.

Heat index

For most parts of September, the heat index is evaluated at a scorching 41°C (105.8°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

January, September, November and December, with an average relative humidity of 83%, are the most humid months in San Bartolomé Ayautla.

Rainfall

In San Bartolomé Ayautla, in September, during 25.5 rainfall days, 130mm (5.12") of precipitation is typically accumulated. Throughout the year, there are 209 rainfall days, and 998mm (39.29") of precipitation is accumulated.

Daylight

In San Bartolomé Ayautla, the average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 6:12 am and sunset at 6:40 pm. On the last day of September, in San Bartolomé Ayautla, sunrise is at 6:17 am and sunset at 6:15 pm CST.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In September, the average daily maximum UV index in San Bartolomé Ayautla, Mexico, is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 6 during September leads to these instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.