July 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 July

July, the same as June, in Cozumel, Mexico, is another tropical summer month, with an average temperature fluctuating between 32.6°C (90.7°F) and 23.5°C (74.3°F).

Temperature

In July, the average high-temperature is essentially the same as in June - a still hot 32.6°C (90.7°F). In July, the average low-temperature is 23.5°C (74.3°F).

Heat index

In July, the average heat index is appraised at a burning hot 49°C (120.2°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the 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 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like pregnancy, clothing, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In July, the average relative humidity in Cozumel is 84%.

Rainfall

In Cozumel, it is raining for 11.8 days, with typically 116mm (4.57") of accumulated precipitation. Throughout the year, in Cozumel, there are 119.9 rainfall days, and 1490mm (58.66") of precipitation is accumulated.

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 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.

Daylight

In Cozumel, the average length of the day in July is 13h and 14min.
On the first day of the month, sunrise is at 6:11 am and sunset at 7:32 pm. On the last day of July, sunrise is at 6:22 am and sunset at 7:25 pm EST.

Sunshine

The average sunshine in July in Cozumel is 7.1h.

UV index

The months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 12 in July interpret into the following advice:
Take all required precautions, as unprotected skin and eyes can burn in 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 wide-brim hat offers excellent sun protection for the 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. 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 July in Cozumel?

In Cozumel, Mexico, in July, the average high-temperature is 32.6°C (90.7°F), and the average low-temperature is 23.5°C (74.3°F). in July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is appraised at 49°C (120.2°F).

What is the average humidity in July in Cozumel?

In July, the average relative humidity is 84%.

How much does it rain in Cozumel in July?

In Cozumel, Mexico, in July, it is raining for 11.8 days, with typically 116mm (4.57") of accumulated precipitation.

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.

How warm is the water in July in Cozumel?

In July, the average sea temperature in Cozumel, Mexico, 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.

How many hours of daylight does Cozumel have in July?

In Cozumel, Mexico, the average day length in July is 13h and 14min.

What time are sunrise and sunset in July in Cozumel?

In July, on the first day of the month, sunrise is at 6:11 am and sunset at 7:32 pm. On the last day of the month, in Cozumel, sunrise is at 6:22 am and sunset at 7:25 pm EST.

How many hours of sunshine does Cozumel have in July?

In July, the average sunshine duration in Cozumel, Mexico, is 7.1h.

When is the highest UV index in Cozumel?

The months with the highest UV index are April through August, with an average maximum UV index of 12.

What is the UV index reading in July in Cozumel?

The average daily maximum UV index in July is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in July
Cozumel, Mexico

Average temperature in July - Cozumel, Mexico
  • Average high temperature in July: 32.6°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 July: 23.5°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 July
Cozumel, Mexico

Average humidity in July - Cozumel, Mexico
  • Average humidity in July: 84%

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 July
Cozumel, Mexico

Average rainfall in July - Cozumel, Mexico
  • Average rainfall in July: 115.5mm

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 July
Cozumel, Mexico

Average rainfall days in July - Cozumel, Mexico
  • Average rainfall days in July: 11.8 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 July
Cozumel, Mexico

Average sea temperature in July - Cozumel, Mexico
  • Average sea temperature in July: 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 July /
Average sunshine in July
Cozumel, Mexico

Average daylight in July / Average sunshine in July - Cozumel, Mexico
  • Average daylight in July: 13h and 14min

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 July: 7h and 6min

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 July
Cozumel, Mexico

Average UV index in July - Cozumel, Mexico
  • Average UV index in July: 12

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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