August weather forecast
Cozumel, Mexico

August continues the summer trend, with persistent high temperatures and humidity levels. Extended daylight hours and a steady sea temperature of 29°C (84.2°F) provide optimal conditions for beach activities. Still, the UV index remains high, highlighting the need for adequate sun protection. Although the month's highest temperature climbs to 33°C (91.4°F), rain showers provide occasional relief from the heat.

Temperature

Temperature records mark August as the warmest month, with highs averaging 33°C (91.4°F) and lows at 23.5°C (74.3°F).

Heat index

For most parts of August, the heat index is estimated at a burning hot 50°C (122°F). Vigilance: Heat cramps and heat exhaustion are likely. The likelihood of heatstroke increases with continued activity.
Understand that the heat index values take into account shaded locations and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In August, the average relative humidity is 84%.

Rainfall

In Cozumel, in August, during 13.4 rainfall days, 142mm (5.59") of precipitation is typically accumulated. Throughout the year, 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.
Note: Ideal surface water temperatures for any water activity fall between 25°C (77°F) and 29°C (84.2°F), offering maximum enjoyment for lengthened periods.

Daylight

In August, the average length of the day is 12h and 49min.
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 7:03 pm EST.

Sunshine

In Cozumel, the average sunshine in August is 7.2h.

UV index

The months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 12 during August, leads to the following recommendations:
Put into action all crucial precautions. Defense against sun damage is a must. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.