September weather forecast
Rincón Viejo, Mexico

The first month of the autumn, September, is still a tropical month in Rincón Viejo, Mexico, with an average temperature fluctuating between 32°C (89.6°F) and 22.7°C (72.9°F).

Temperature

The average high-temperature in September, at a still tropical 32°C (89.6°F), reveals a modest deviation from August's 33.1°C (91.6°F). The average temperature in Rincón Viejo, Mexico, during September nights dips to a pleasant 22.7°C (72.9°F).

Heat index

In September, the heat index is calculated to be a blisteringly hot 42°C (107.6°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. 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. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The most humid month is September, with an average relative humidity of 75%.

Rainfall

In Rincón Viejo, in September, during 18.3 rainfall days, 69mm (2.72") of precipitation is typically accumulated. Throughout the year, in Rincón Viejo, there are 110.2 rainfall days, and 345mm (13.58") of precipitation is accumulated.

Daylight

In Rincón Viejo, the average length of the day in September is 12h and 13min.
On the first day of September in Rincón Viejo, sunrise is at 6:06 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 6:09 pm CST.

Sunshine

The average sunshine in September in Rincón Viejo is 8.8h.

UV index

February through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 in September translates into these instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.