Cozumel
Mexico
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Cozumel, Mexico

A small blue boat, palm trees, and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico, with a small island
A small blue boat, palm trees, and clear blue waters on Chen Rio white sandy beach in Cozumel, Mexico, with a small island
October, like September, is a hot autumn month in Cozumel, Mexico, with average temperature ranging between min 23.1°C (73.6°F) and max 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 October, the average low-temperature is 23.1°C (73.6°F).

Heat index

The average heat index is calculated to a scorching 41.6°C (106.9°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, clothing, wind, and activity influence one's weather impression. 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

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

Rainfall

The month with the most rainfall in Cozumel is October when the rain falls for 15.7 days and typically aggregates up to 242.5mm (9.5") of precipitation.

Sea temperature

July through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
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 in Cozumel is 11.7h.

Sunshine

In Cozumel, the average sunshine is 6.2h.

UV index

The average daily maximum UV index in Cozumel is 9. A UV Index estimate of 8 to 10 represents a very high health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In October, the average maximum UV index of 9 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. 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 wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in October in Cozumel?

The average high-temperature, in October, in Cozumel, 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. 'felt air temperature', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, in October is calculated to 41.6°C (106.9°F).

What is the average humidity in October in Cozumel?

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

How much does it rain in Cozumel in October?

In Cozumel, Mexico, during October, the rain falls for 15.7 days and regularly aggregates up to 242.5mm (9.5") of precipitation.

What is the rainiest month in Cozumel?

October is the month with the most rainfall in Cozumel. Rain falls for 15.7 days and accumulates 242.5mm (9.5") of precipitation.

When is the sea warmest in Cozumel?

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

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 swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

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

In Cozumel, the average length of the day in October is 11.7h.

How long on average sun shines in October in Cozumel?

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

What is the UV index intensity in October in Cozumel?

In October, the average daily maximum UV index in Cozumel, Mexico, is 9. A UV Index reading of 8 to 10 represents a very high health risk from unprotected exposure to the UV radiation.
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).
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).
Coldest months (with the lowest average low temperature) are January and February (19.4°C).

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

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

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 lowest rainfall) is March (32.2mm).

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 lowest number of rainy days is April (3.7 days).

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

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

Average daylight in October / Average sunshine in October - Cozumel, Mexico
  • Average daylight in October: 11.7h

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in October: 6.2h

The month with most sunshine is April (Average sunshine: 8.6h).
Months with least sunshine are September and November (Average sunshine: 6.1).

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

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