August weather forecast
Cancún, Mexico

August is typically the hottest month in Cancún, exhibiting the pinnacle of the annual temperatures. Despite the surge, the coastal location of Cancún helps in moderating the thermal build-up, courtesy of occasional sea breezes. August also records elevated precipitation levels, providing an intermittent respite from the heightened thermal conditions. Key weather dimensions include a peak temperature of 31°C (87.8°F), minimum temperature of 27°C (80.6°F), and an accumulated rainfall of 85mm (3.35") spread over 21.3 days. Thus, while temps soar, Cancún continues to engage tourists with its fascinating offerings, uplifted by sporadic spells of brief showers.

Temperature

August is the warmest month of the year, registering average temperatures as high as 31°C (87.8°F) and as low as 27°C (80.6°F).

Heat index

The heat index value during August is appraised at an extremely hot 40°C (104°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In Cancún, the average relative humidity in August is 76%.

Rainfall

In August, in Cancún, the rain falls for 21.3 days. Throughout August, 85mm (3.35") of precipitation is accumulated. In Cancún, Mexico, during the entire year, the rain falls for 224.7 days and collects up to 886mm (34.88") of precipitation.

Sea temperature

The month with the warmest seawater in Cancún is August, with an average sea temperature of 29.4°C (84.9°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

In Cancún, Mexico, the average length of the day in August is 12h and 50min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:26 pm. On the last day of August, sunrise is at 6:30 am and sunset at 7:04 pm EST.

Sunshine

July and August, with an average of 9.3h of sunshine, are months with the most sunshine in Cancún.

UV index

March through October, with an average maximum UV index of 7, are months with the highest UV index in Cancún. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 7 during August translates into the following guidance:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.