, like September
, is a hot autumn month in Cozumel
, with an average temperature fluctuating between 23.1°C (73.6°F) and 30.7°C (87.3°F).
In October, the average high-temperature is practically the same as in September - a still hot 30.7°C (87.3°F). In Cozumel, Mexico, the average low-temperature is 23.1°C (73.6°F).
In October, the average heat index is calculated to be a scorching 41.6°C (106.9°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.Note
: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, differences in body mass, height, and shape, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception 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.
In Cozumel, the average relative humidity in October is 85%.
The month with the most rainfall is October, when the rain falls for 15.7 days and typically aggregates up to 242.5mm (9.55") of precipitation.
through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Cozumel.Note
: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.
In October, the average length of the day is 11h and 40min.
On the first day of the month, sunrise is at 6:38 am and sunset at 6:35 pm. On the last day of October, in Cozumel, Mexico, sunrise is at 6:49 am and sunset at 6:13 pm EST.
The average sunshine in October is 6.2h.
In October, the average daily maximum UV index in Cozumel is 9. A UV Index estimate of 8 to 10 represents a very high threat to health from exposure to the Sun's UV radiation for the average person.Note
: The daily maximum UV index of 9 in October interpret into the following advice:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.