October weather forecast
Merida, Mexico

The month of October brings a reprieve from the heavy rainfall, with a decline to an average of 65mm. The reduction in rainfall paves the way for somewhat drier days. The temperature dips moderately, making the weather slightly cooler. This sets the stage for the city’s transition into the colder months. The slightly cooler climate and reduced rainfall make October a suitable time to visit Merida.

Temperature

As September turns into October in Merida, the average high-temperatures rest at a still tropical 31.5°C, showing a minor variation from the prior month. Throughout October, the nighttime temperature averages to an agreeable 22.3°C.

Heat index

During October, the heat index is computed to be a blistering 42°C. Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. 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 are particularly relevant to babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The months with the highest humidity are September and October, with an average relative humidity of 78%.

Rainfall

In Merida, during October, the rain falls for 19.6 days and regularly aggregates up to 65mm of precipitation. Throughout the year, in Merida, there are 167.3 rainfall days, and 536mm of precipitation is accumulated.

Daylight

In Merida, the average length of the day in October is 11h and 40min.
On the first day of October, sunrise is at 5:49 am and sunset at 5:46 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 5:23 pm CST.

Sunshine

In Merida, the average sunshine in October is 7.8h.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index in Merida, Mexico. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In October, the maximum UV index of 7 translates into these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.