September weather forecastMazatán, Mexico

Weather in September

September, the first month of the autumn in Mazatán, is still a tropical month, with an average temperature ranging between max 30.1°C (86.2°F) and min 23.9°C (75°F).

Temperature

The shift from August to September is characterized by an average high-temperature of a still tropical 30.1°C (86.2°F), not significantly different from the 30.7°C (87.3°F) of August. During September, the nighttime temperature in Mazatán averages to a moderately hot 23.9°C (75°F).

Heat index

The heat index value during September is estimated at a very hot 37°C (98.6°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', quantifies the warmth felt when relative humidity is considered. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. 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.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. 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

September and October, with an average relative humidity of 76%, are the most humid months.

Rainfall

In Mazatán, in September, during 27.8 rainfall days, 182mm (7.17") of precipitation is typically accumulated. Throughout the year, there are 227 rainfall days, and 1231mm (48.46") of precipitation is accumulated.

Daylight

The average length of the day in September in Mazatán is 12h and 13min.
On the first day of the month, sunrise is at 5:57 am and sunset at 6:21 pm. On the last day of September, in Mazatán, sunrise is at 5:59 am and sunset at 5:59 pm CST.

Sunshine

In September, the average sunshine is 10.6h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Mazatán. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Mazatán. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, a daily UV index of 7 turns into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.