September weather forecast
Apílol, Mexico

September, the first month of the autumn in Apílol, is still a warm month, with temperature in the range of an average low of 19.7°C (67.5°F) and an average high of 29.7°C (85.5°F).

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a warm 29.7°C (85.5°F) from August's 31.8°C (89.2°F). The low-temperature averages to a refreshing 19.7°C (67.5°F) during the nights of September.

Heat index

September's average heat index is calculated to be a very hot 37°C (98.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. 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 babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

With an average relative humidity of 82%, September is the most humid month.

Rainfall

September is the month with the most rainfall. Rain falls for 23.4 days and accumulates 119mm (4.69") of precipitation.

Daylight

The average length of the day in September in Apílol is 12h and 16min.
On the first day of September, sunrise is at 6:17 am and sunset at 6:49 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 6:22 pm CST.

Sunshine

The average sunshine in September is 8.2h.

UV index

In September, the average daily maximum UV index in Apílol is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during September leads to these instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.