September weather forecast
Cosalá, Mexico

The first month of the autumn, September, is still a hot month in Cosalá, Mexico, with an average temperature fluctuating between 23.7°C (74.7°F) and 33.5°C (92.3°F).

Temperature

The advent of September presents an average high-temperature of a still hot 33.5°C (92.3°F), maintaining a close correlation with the preceding month. Cosalá experiences an average low-temperature reading of 23.7°C (74.7°F) throughout September.

Heat index

In September, the average heat index is evaluated at a burning hot 48°C (118.4°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Heat index's context suggests values are appropriate for shady areas and slight breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

September is the most humid month in Cosalá, with an average relative humidity of 75%.

Rainfall

In Cosalá, in September, during 18.4 rainfall days, 77mm (3.03") of precipitation is typically accumulated. In Cosalá, during the entire year, the rain falls for 103.1 days and collects up to 368mm (14.49") of precipitation.

Daylight

In Cosalá, the average length of the day in September is 12h and 17min.
On the first day of the month, sunrise is at 5:48 am and sunset at 6:24 pm. On the last day of September, sunrise is at 5:58 am and sunset at 5:54 pm MST.

Sunshine

In September, the average sunshine is 10.7h.

UV index

April through July, September and October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during September leads to these advisories:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.