October weather forecast
Cozumel, Mexico

Palm trees and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico
Palm trees and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico

Weather in October

October, like September, is a hot autumn month in Cozumel, Mexico, with an average temperature fluctuating between 23.1°C (73.6°F) and 30.7°C (87.3°F).

Temperature

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).

Heat index

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.

Humidity

In Cozumel, the average relative humidity in October is 85%.

Rainfall

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.

Sea temperature

July 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.

Daylight

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.

Sunshine

The average sunshine in October is 6.2h.

UV index

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.
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FAQ

What is the temperature in October in Cozumel?

The average high-temperature, in October, in Cozumel, Mexico, is 30.7°C (87.3°F), while the average low-temperature is 23.1°C (73.6°F). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in October is calculated to be 41.6°C (106.9°F).

What is the average humidity in October in Cozumel?

In October, the average relative humidity in Cozumel, Mexico, is 85%.

What is the wettest month in Cozumel?

The month with the most rainfall in Cozumel, Mexico, is October, when the rain falls for 15.7 days and typically aggregates up to 242.5mm (9.55") of precipitation.

How many days does it rain in October in Cozumel?

In Cozumel, in October, during 15.7 rainfall days, 242.5mm (9.55") of precipitation is typically accumulated.

What months are the sea warmest in Cozumel?

July through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Cozumel.

What is the sea water temperature in October in Cozumel?

In Cozumel, Mexico, the average seawater temperature in October is 29°C (84.2°F). 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.

What is the average length of the day in October in Cozumel?

In October, the average day length in Cozumel, Mexico, is 11h and 40min.

When are sunrise and sunset in October in Cozumel?

In October, on the first day of the month, sunrise is at 6:38 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:13 pm EST.

How long on average sun shines in October in Cozumel?

In Cozumel, Mexico, the average sunshine duration in October is 6.2h.

What is the UV index intensity in October in Cozumel?

The average daily maximum UV index in October is 9. A UV Index value of 8 to 10 symbolizes a very high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in October
Cozumel, Mexico

Average temperature in October - Cozumel, Mexico
  • Average high temperature in October: 30.7°C

The warmest month (with the highest average high temperature) is August (33°C).
The months with the lowest average high temperature are January and December (28.6°C).

  • Average low temperature in October: 23.1°C

The month with the highest average low temperature is June (23.8°C).
The coldest months (with the lowest average low temperature) are January and February (19.4°C).

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Average humidity in October
Cozumel, Mexico

Average humidity in October - Cozumel, Mexico
  • Average humidity in October: 85%

The month with the highest relative humidity is September (87%).
The months with the lowest relative humidity are March and April (79%).

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Average rainfall in October
Cozumel, Mexico

Average rainfall in October - Cozumel, Mexico
  • Average rainfall in October: 242.5mm

The wettest month (with the highest rainfall) is October (242.5mm).
The driest month (with the least rainfall) is March (32.2mm).

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Average rainfall days in October
Cozumel, Mexico

Average rainfall days in October - Cozumel, Mexico
  • Average rainfall days in October: 15.7 days

The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is April (3.7 days).

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Average sea temperature in October
Cozumel, Mexico

Average sea temperature in October - Cozumel, Mexico
  • Average sea temperature in October: 29°C

The best months for swimming (with the highest average sea temperature) are July, August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

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Average daylight in October /
Average sunshine in October
Cozumel, Mexico

Average daylight in October / Average sunshine in October - Cozumel, Mexico
  • Average daylight in October: 11h and 40min

The month with the longest days is June (Average daylight: 13h and 21min).
The month with the shortest days is December (Average daylight: 10h and 55min).

  • Average sunshine in October: 6h and 12min

The month with the most sunshine is April (Average sunshine: 8h and 36min).
The months with the least sunshine are September and November (Average sunshine: 6h and 6min).

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Average UV index in October
Cozumel, Mexico

Average UV index in October - Cozumel, Mexico
  • Average UV index in October: 9

The months with the highest UV index are April, May, June, July and August (UV index 12).
The months with the lowest UV index are January and December (UV index 7).

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