August weather forecast
Cozumel, Mexico

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.