September weather forecast
Calotmul, Mexico

The first month of the autumn, September, is still a hot month in Calotmul, Mexico, with temperature in the range of an average low of 22.6°C (72.7°F) and an average high of 33.4°C (92.1°F).

Temperature

During September, the average high-temperature is a still tropical 33.4°C (92.1°F), maintaining a close resemblance to that of the preceding month. Calotmul's September nights cool down to an average low-temperature of 22.6°C (72.7°F).

Heat index

The heat index in September is calculated to be a burning hot 50°C (122°F). Be careful: Heat exhaustion and heat cramps are probable. Heatstroke may result from extended activity.
For clarity, heat index numbers account for light winds and areas under shade. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Calotmul, Mexico, the average relative humidity in September is 81%.

Rainfall

In September, in Calotmul, the rain falls for 24.1 days. Throughout September, 74mm (2.91") of precipitation is accumulated. In Calotmul, during the entire year, the rain falls for 196.1 days and collects up to 606mm (23.86") of precipitation.

Daylight

In Calotmul, the average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 5:36 am and sunset at 6:08 pm. On the last day of September, sunrise is at 5:43 am and sunset at 5:41 pm CST.

Sunshine

In Calotmul, the average sunshine in September is 7.8h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 7 during September translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.