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

August stands out as Cozumel's warmest month, with temperatures ranging between an average high of 33°C (91.4°F) and a low of 23.5°C (74.3°F).

Heat index

The heat index for August is calculated to be a life-threatening hot 50°C (122°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
Heat index details are generally centered around shaded locations and a mild breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

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

Rainfall

In August, in Cozumel, the rain falls for 13.4 days. Throughout August, 142mm (5.59") of precipitation is 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.
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

The average length of the day in August is 12h and 49min.
On the first day of the month, sunrise is at 6:22 am and sunset at 7:25 pm. On the last day of August, in Cozumel, sunrise is at 6:31 am and sunset at 7:03 pm EST.

Sunshine

The average sunshine in August in Cozumel 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 estimate of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 12 during August translates into the following recommendations:
Employ all crucial safeguards, unprotected skin could burn rapidly. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. A sunscreen with at least SPF 30 should be used liberally and reapplied frequently on cloudy days, especially after swimming or an outdoor workout. Alert! The Sun's UV rays are heightened by the reflection of sand and water.