September weather forecast
Jalpa de Méndez, Mexico

The first month of the autumn, September, is still a hot month in Jalpa de Méndez, Mexico, with an average temperature ranging between max 30.6°C (87.1°F) and min 24.7°C (76.5°F).

Temperature

Jalpa de Méndez registers an average high-temperature of a still hot 30.6°C (87.1°F) with the arrival of September, showing minor deviation from the preceding month. Throughout September, the temperature tends to fall to a consistent average low of 24.7°C (76.5°F).

Heat index

For September, the heat index is evaluated at a blisteringly hot 40°C (104°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in September is 82%.

Rainfall

In Jalpa de Méndez, Mexico, during September, the rain falls for 25.5 days and regularly aggregates up to 155mm (6.1") of precipitation. In Jalpa de Méndez, during the entire year, the rain falls for 223 days and collects up to 1255mm (49.41") of precipitation.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of the month, sunrise is at 5:58 am and sunset at 6:26 pm. On the last day of September, sunrise is at 6:02 am and sunset at 6:01 pm CST.

Sunshine

In September, the average sunshine is 9.2h.

UV index

The months with the highest UV index in Jalpa de Méndez are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.