July weather forecast
Cozumel, Mexico

The weather in July coincides with the apex of summer, suggesting high temperatures and prevailing humidity. Long summer days provide plenty of daylight for tourist activities. The sea temperature remains high at 29°C (84.2°F), offering ideal conditions for swimming and water sports. However, the UV index dips slightly to 12, requiring continued diligence in sun protection. July also holds moderate rainfall with approximately 116mm (4.57") precipitation.

Temperature

The commencement of July brings an average high-temperature of a still tropical 32.6°C (90.7°F), marking an inconsequential divergence from June. During July, an average low-temperature of 23.5°C (74.3°F) is observed.

Heat index

July's heat index is computed to be a life-threatening hot 49°C (120.2°F). Remain cautious: Heat cramps along with heat exhaustion are foreseeable. Ongoing activity may precipitate heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In July, the average relative humidity is 84%.

Rainfall

In July, the rain falls for 11.8 days. Throughout July, 116mm (4.57") of precipitation is accumulated. Throughout the year, there are 119.9 rainfall days, and 1490mm (58.66") of precipitation is accumulated.

Sea temperature

The months with the warmest seawater are July through October, with an average sea temperature of 29°C (84.2°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

Daylight

The average length of the day in July is 13h and 14min.
On the first day of July in Cozumel, sunrise is at 6:11 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:25 pm EST.

Sunshine

The average sunshine in July is 7.1h.

UV index

The months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 12 during July translates into the following directions:
Put into action all crucial precautions. Defense against sun damage is a must. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.