September weather forecast
Plan de Arroyos, Mexico

September, the first month of the autumn in Plan de Arroyos, is also a moderately hot month, with temperature in the range of an average high of 29.3°C (84.7°F) and an average low of 20.4°C (68.7°F).

Temperature

With the onset of September, the average high-temperature stands at a moderately hot 29.3°C (84.7°F), closely aligned with August's 30.6°C (87.1°F). Plan de Arroyos records an average low-temperature of 20.4°C (68.7°F) throughout the month of September.

Heat index

In September, the heat index is calculated to be a sweltering 35°C (95°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Plan de Arroyos, the average relative humidity in September is 78%.

Rainfall

September is the month with the most rainfall. Rain falls for 22.8 days and accumulates 108mm (4.25") of precipitation.

Daylight

In Plan de Arroyos, the average length of the day in September is 12h and 15min.
On the first day of September, sunrise is at 6:13 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 6:17 pm CST.

Sunshine

The average sunshine in September in Plan de Arroyos is 8.7h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 6 in September leads to these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.