October weather forecast
Cozumel, Mexico

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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

As October dawns, the rainfall continues to dominate the Cozumel weather. A further decrease in daylight hours suggests the forthcoming arrival of winter. The UV index dips to 9, but sun protection remains essential during midday. Despite these changes, the sea temperature remains high at 29°C (84.2°F). As a record, the month experiences the highest number of rainfall days, amounting to 15.7.

Temperature

The start of October sees the average high-temperature at a still tropical 30.7°C (87.3°F), showing little difference from September's 31.9°C (89.4°F). In October, the nighttime temperature lowers to an average of 23.1°C (73.6°F).

Heat index

The heat index for October is calculated to be a blisteringly hot 42°C (107.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

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

Rainfall

October is the month with the most rainfall. Rain falls for 15.7 days and accumulates 243mm (9.57") of precipitation.

Sea temperature

The months with the warmest seawater in Cozumel are July through October, with an average sea temperature of 29°C (84.2°F).
Note: Water temperature ranging between 25°C (77°F) and 29°C (84.2°F) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

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

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

UV index

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 unprotected exposure to Sun's UV rays for the average person.
Note: In October, the maximum UV index of 9 suggests this advice:
Never be careless. Unprotected skin and eyes can be harmed swiftly. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Every two hours, apply and reapply an SPF 30+ broad-spectrum sunscreen, especially after swimming or engaging in outdoor activities. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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Frequently asked questions

How hot is it in Cozumel in October?

During October, Cozumel experiences an average high-temperature of 30.7°C (87.3°F) and a low-temperature of 23.1°C (73.6°F). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in October is calculated to be 42°C (107.6°F).

What is the average humidity in October in Cozumel?

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

What is the rainiest month in Cozumel?

The month with the most rainfall is October, when the rain falls for 15.7 days and typically aggregates up to 243mm (9.57") of precipitation.

How much does it rain in Cozumel in October?

In Cozumel, during October, the rain falls for 15.7 days and regularly aggregates up to 243mm (9.57") of precipitation.

When is 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, Mexico.

What is the water temperature in October in Cozumel?

In October, the average sea temperature in Cozumel, Mexico, is 29°C (84.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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

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

When is the sunrise / sunset in October in Cozumel?

On the first day of October in Cozumel, 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, the average sunshine duration in October is 6.2h.

What is the UV index reading in October in Cozumel?

In October, the average daily maximum UV index in Cozumel, Mexico, is 9. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
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 4min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in October: 6h and 1min

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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Cozumel, Mexico

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