September weather forecast
Chichén Itzá, Mexico

September, the first month of the autumn in Chichén Itzá, is also a hot month, with temperature in the range of an average low of 22.5°C (72.5°F) and an average high of 33.2°C (91.8°F).

Temperature

Shifting into September, Chichén Itzá records an average high-temperature of a still hot 33.2°C (91.8°F), presenting minor fluctuations compared to the previous month. In Chichén Itzá, the expected average low-temperature for September is an agreeable 22.5°C (72.5°F).

Heat index

The heat index for September is evaluated at a blazing hot 50°C (122°F). Notice: Heat cramps and heat exhaustion are likely. Continued strenuous activity might lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The months with the highest humidity are September and October, with an average relative humidity of 82%.

Rainfall

In September, the rain falls for 23.8 days. Throughout September, 67mm (2.64") of precipitation is accumulated. Throughout the year, there are 195.8 rainfall days, and 599mm (23.58") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 15min.
On the first day of September, sunrise is at 5:38 am and sunset at 6:09 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 5:42 pm CST.

Sunshine

In September, the average sunshine in Chichén Itzá, Mexico, is 7.9h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during September leads to these instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.