September weather forecast
Jalcocotán, Mexico

The first month of the autumn, September, is also a moderately hot month in Jalcocotán, Mexico, with an average temperature ranging between min 20.4°C (68.7°F) and max 29.6°C (85.3°F).

Temperature

Jalcocotán notes an average high-temperature of a warm 29.6°C (85.3°F) in September, hardly diverging from August. September brings with it a nighttime average temperature of 20.4°C (68.7°F) in Jalcocotán.

Heat index

The heat index value for September is evaluated at a torrid 38°C (100.4°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. 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 body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The months with the highest humidity in Jalcocotán, Mexico, are August and September, with an average relative humidity of 86%.

Rainfall

In September, in Jalcocotán, the rain falls for 29 days. Throughout September, 339mm (13.35") of precipitation is accumulated. In Jalcocotán, during the entire year, the rain falls for 164.8 days and collects up to 1589mm (62.56") of precipitation.

Daylight

The average length of the day in September is 12h and 16min.
On the first day of September in Jalcocotán, sunrise is at 5:43 am and sunset at 6:16 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 5:48 pm MST.

Sunshine

In Jalcocotán, the average sunshine in September is 7.5h.

UV index

The months with the highest UV index in Jalcocotán are February through November, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 in September translates into these instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.