September weather forecast
Coatzintla, Mexico

The first month of the autumn, September, is also a hot month in Coatzintla, Mexico, with an average temperature ranging between min 21.5°C (70.7°F) and max 31.3°C (88.3°F).

Temperature

At the start of September, Coatzintla's average high-temperature reaches a still hot 31.3°C (88.3°F), subtly different from the preceding month. An average temperature of 21.5°C (70.7°F) is recorded during the nights in September.

Heat index

The heat index for September is estimated at a scorching 43°C (109.4°F). Remain cautious: Heat cramps along with heat exhaustion are foreseeable. Ongoing activity may precipitate heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. 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.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In September, the average relative humidity is 82%.

Rainfall

In Coatzintla, in September, it is raining for 22.4 days, with typically 124mm (4.88") of accumulated precipitation. Throughout the year, there are 189.3 rainfall days, and 928mm (36.54") of precipitation is accumulated.

Daylight

The average length of the day in September in Coatzintla is 12h and 15min.
On the first day of the month, sunrise is at 6:14 am and sunset at 6:45 pm. On the last day of September, sunrise is at 6:20 am and sunset at 6:18 pm CST.

Sunshine

In September, the average sunshine is 7.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 6 in September suggests the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.