September weather forecast
San José Tenango, Mexico

September, the first month of the autumn in San José Tenango, is still a tropical month, with an average temperature varying between 30.5°C (86.9°F) and 21.3°C (70.3°F).

Temperature

The shift into September finds San José Tenango at an average high-temperature of a still hot 30.5°C (86.9°F), closely comparable to August's conditions. During the month of September, the temperature in San José Tenango falls to an average of 21.3°C (70.3°F).

Heat index

The heat index in September is calculated to be a blisteringly hot 40°C (104°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. 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. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The months with the highest humidity are September and October, with an average relative humidity of 82%.

Rainfall

In San José Tenango, in September, during 25.1 rainfall days, 111mm (4.37") of precipitation is typically accumulated. Throughout the year, in San José Tenango, there are 195.4 rainfall days, and 758mm (29.84") of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 in September translates into these instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.