September weather forecast
Campeche, Mexico

As Campeche, Mexico moves into the back end of the year, September throws up no surprises weather-wise. The city continues to experience heavy rain combined with high temperatures, a characteristic feature of the rainy season. This rainy period peaks at a whopping 79mm (3.11") of rainfall in September. The tail-end of the rainy season in sight brings the anticipation of lower rainfall in October.

Temperature

Campeche experiences a subtle adjustment in high-temperatures to a still tropical 32.3°C (90.1°F) with the onset of September, maintaining near parity with August's 32.9°C (91.2°F). In Campeche, the September nights cool down to an average low of 24.4°C (75.9°F).

Heat index

September's mean heat index is evaluated at a life-threatening hot 45°C (113°F). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to 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.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

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

Rainfall

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

Sea temperature

With an average sea temperature of 29.4°C (84.9°F), September is the month with the warmest seawater in Campeche.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

The average length of the day in September in Campeche, Mexico, is 12h and 15min.
On the first day of September, sunrise is at 5:46 am and sunset at 6:17 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 5:50 pm CST.

Sunshine

In September, the average sunshine is 10.3h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 7 during September translates into these guidelines:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take caution! The UV rays from the Sun gain strength from sand and water reflections.