August 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 August

The last month of the summer, August, is another hot month in Cozumel, Mexico, with temperature in the range of an average low of 23.5°C (74.3°F) and an average high of 33°C (91.4°F).

Temperature

August is the warmest month, with an average high-temperature of 33°C (91.4°F) and an average low-temperature of 23.5°C (74.3°F).

Heat index

The average heat index in August is appraised at a life-threatening hot 50°C (122°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 'feels like', 'apparent temperature', 'felt air 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. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, differences in body mass, height, and shape, clothing), and activity. 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 especially crucial for babies and toddlers. 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 normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. 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 in August is 84%.

Rainfall

In Cozumel, during 13.4 rainfall days, 142mm (5.59") of precipitation is typically accumulated. In Cozumel, during the entire year, the rain falls for 119.9 days and collects up to 1490mm (58.66") 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 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

The average length of the day in August in Cozumel is 12h and 49min.
On the first day of August in Cozumel, sunrise is at 6:22 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:04 pm EST.

Sunshine

The average sunshine in August is 7.2h.

UV index

The months with the highest UV index in Cozumel are April through August, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 12 in August interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 warmest month in Cozumel?

The warmest month in Cozumel is August, with an average high-temperature of 33°C (91.4°F) and an average low-temperature of 23.5°C (74.3°F).

What is the temperature in August in Cozumel?

The average high-temperature, in August, in Cozumel, Mexico, is 33°C (91.4°F), while the average low-temperature is 23.5°C (74.3°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 50°C (122°F).

What is the average humidity in August in Cozumel?

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

How many days does it rain in August in Cozumel?

In Cozumel, in August, during 13.4 rainfall days, 142mm (5.59") of precipitation is typically accumulated.

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.

What is the sea water temperature in August in Cozumel?

In Cozumel, Mexico, in August, the average water temperature 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.

How many hours of daylight does Cozumel have in August?

The average day length in August in Cozumel, Mexico, is 12h and 49min.

When are sunrise and sunset in August in Cozumel?

On the first day of August, sunrise is at 6:22 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:04 pm EST.

How many hours of sunshine does Cozumel have in August?

In August, the average sunshine duration is 7.2h.

What are the months with the highest UV index in Cozumel?

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

What is the UV index reading in August in Cozumel?

The average daily maximum UV index in August in Cozumel is 12. A UV Index value of 11, and more, symbolizes an extreme health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in August
Cozumel, Mexico

Average temperature in August - Cozumel, Mexico
  • Average high temperature in August: 33°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 August: 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 August
Cozumel, Mexico

Average humidity in August - Cozumel, Mexico
  • Average humidity in August: 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 August
Cozumel, Mexico

Average rainfall in August - Cozumel, Mexico
  • Average rainfall in August: 141.7mm

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 August
Cozumel, Mexico

Average rainfall days in August - Cozumel, Mexico
  • Average rainfall days in August: 13.4 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 August
Cozumel, Mexico

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

Average daylight in August / Average sunshine in August - Cozumel, Mexico
  • Average daylight in August: 12h and 49min

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 August: 7h 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 August
Cozumel, Mexico

Average UV index in August - Cozumel, Mexico
  • Average UV index in August: 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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