October weather forecast
Chetumal, Mexico

October, the same as September, in Chetumal, Mexico, is another hot autumn month, with an average temperature fluctuating between 30.5°C (86.9°F) and 23.2°C (73.8°F).

Temperature

October's average high-temperature stands at a still tropical 30.5°C (86.9°F), showing little deviation from September's 31.5°C (88.7°F). An average temperature of 23.2°C (73.8°F) marks the nights in October.

Heat index

For October, the heat index is computed to be a scorching 40°C (104°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The months with the highest humidity are October and December, with an average relative humidity of 82%.

Rainfall

In Chetumal, in October, during 21 rainfall days, 123mm (4.84") of precipitation is typically accumulated. Throughout the year, in Chetumal, there are 198.4 rainfall days, and 752mm (29.61") of precipitation is accumulated.

Sea temperature

In Chetumal, the average seawater temperature in October is 28.9°C (84°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

In October, the average length of the day is 11h and 43min.
On the first day of October, sunrise is at 6:43 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:20 pm EST.

Sunshine

In October, the average sunshine is 8h.

UV index

The months with the lowest UV index in Chetumal are January, February, August, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In October, the maximum UV index of 6 suggests these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.