September weather forecast
Hopelchén, Mexico

The first month of the autumn, September, is still a tropical month in Hopelchén, Mexico, with an average temperature fluctuating between 24.4°C (75.9°F) and 32.3°C (90.1°F).

Temperature

September's climate shows a minor adjustment in average high-temperatures to a still tropical 32.3°C (90.1°F) from August's 32.9°C (91.2°F). Hopelchén's temperature drops to an average low of 24.4°C (75.9°F) during the nights of September.

Heat index

Throughout September, the heat index is calculated to be a blazing hot 45°C (113°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important 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.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

September and October, with an average relative humidity of 78%, are the most humid months in Hopelchén.

Rainfall

In September, the rain falls for 21.6 days. Throughout September, 79mm (3.11") of precipitation is accumulated. In Hopelchén, during the entire year, the rain falls for 149.4 days and collects up to 548mm (21.57") of precipitation.

Daylight

In Hopelchén, Mexico, the average length of the day in September is 12h and 15min.
On the first day of September in Hopelchén, Mexico, sunrise is at 5:44 am and sunset at 6:14 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 5:48 pm CST.

Sunshine

The average sunshine in September in Hopelchén is 10.3h.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index in Hopelchén. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.