July weather forecast
Tulum, Mexico

In July, temperatures in Tulum reach their peak, resulting in warm and humid conditions. With July's weather characterized by a refreshing drop in rainfall to 51mm (2.01") compared to June's 139mm (5.47"), it's an excellent time for beach outings, swimming, and snorkeling. At this time of the year, sunlight is abundant with 13.2 hours of daylight and an impressive 9.2 hours of sunshine, the highest for the year. This sunny spectacle combined with a warm sea temperature delivers prime beach conditions. The overall ambiance during July is of an inviting tropical summer setting.

Temperature

The start of July marks an average high-temperature of a still hot 31.5°C (88.7°F), hardly distinguishable from the conditions in June. Tulum experiences an average low-temperature of 25.8°C (78.4°F) in month of July.

Heat index

In July, the average heat index is appraised at a blisteringly hot 41°C (105.8°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. 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 essentially critical for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in July is 77%.

Rainfall

In July, the rain falls for 17.8 days. Throughout July, 51mm (2.01") of precipitation is accumulated. Throughout the year, there are 210.8 rainfall days, and 810mm (31.89") of precipitation is accumulated.

Sea temperature

In Tulum, the average seawater temperature in July is 28°C (82.4°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Tulum, the average length of the day in July is 13h and 13min.
On the first day of the month, sunrise is at 6:13 am and sunset at 7:33 pm. On the last day of July, sunrise is at 6:24 am and sunset at 7:27 pm EST.

Sunshine

The months with the most sunshine are July and August, with an average of 9.2h of sunshine.

UV index

March through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: In July, a daily maximum UV index of 7 leads to the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.