September weather forecast
Pacabtún, Mexico

September, the first month of the autumn in Pacabtún, is still a tropical month, with an average temperature varying between 33.6°C (92.5°F) and 23.3°C (73.9°F).

Temperature

Pacabtún's average high-temperature in September is a hot 33.6°C (92.5°F), marking an insignificant difference from the 35°C (95°F) of August. In Pacabtún, the September nights cool down to an average low of 23.3°C (73.9°F).

Heat index

The heat index in September is calculated to be a burning hot 49°C (120.2°F). Take heed: Heat exhaustion and heat cramps are anticipated. Heatstroke is a potential outcome of continuous activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. 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. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The months with the highest humidity in Pacabtún, Mexico, are September and October, with an average relative humidity of 78%.

Rainfall

In Pacabtún, during September, the rain falls for 20.4 days and regularly aggregates up to 70mm (2.76") of precipitation. Throughout the year, there are 167.3 rainfall days, and 536mm (21.1") of precipitation is accumulated.

Daylight

In September, the average length of the day in Pacabtún is 12h and 16min.
On the first day of the month, sunrise is at 5:42 am and sunset at 6:13 pm. On the last day of September, in Pacabtún, Mexico, sunrise is at 5:49 am and sunset at 5:46 pm CST.

Sunshine

In Pacabtún, the average sunshine in September is 9.4h.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.