September weather forecast
Coacuilco, Mexico

September, the first month of the autumn in Coacuilco, is still a warm month, with an average temperature varying between 29.7°C (85.5°F) and 19.7°C (67.5°F).

Temperature

The advent of September sees the average high-temperature at a warm 29.7°C (85.5°F), subtly shifted from August's 31.8°C (89.2°F). During September, the temperature tends to dip to an average of 19.7°C (67.5°F) at night.

Heat index

The heat index value during September is appraised at a very hot 37°C (98.6°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

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

Rainfall

The month with the most rainfall is September, when the rain falls for 23.4 days and typically aggregates up to 119mm (4.69") of precipitation.

Daylight

In Coacuilco, the average length of the day in September is 12h and 16min.
On the first day of September, sunrise is at 6:18 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 6:22 pm CST.

Sunshine

In Coacuilco, Mexico, the average sunshine in September is 8.2h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.