July weather forecast
Merida, Mexico

July maintains the similar weather pattern as June. The humidity and the temperature remains almost stable but it’s the rainfall which lessens to an average of 59mm (2.32") compared to June. Persistent showers coupled with high temperatures might keep the tourists away. Nonetheless, the warmth of Merida in July can be enjoyed by those who like tropical climates.

Temperature

The ushering in of July brings an average high-temperature of a torrid 35°C (95°F), closely mirroring the 34.3°C (93.7°F) of June. Merida encounters a steady low-temperature average of 23.7°C (74.7°F) throughout the month of July.

Heat index

July's average heat index is appraised at a burning hot 52°C (125.6°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Understanding the heat index involves considering values for shaded locales with light wind. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 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.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Merida, the average relative humidity in July is 72%.

Rainfall

In Merida, in July, it is raining for 16.4 days, with typically 59mm (2.32") of accumulated precipitation. Throughout the year, there are 167.3 rainfall days, and 536mm (21.1") of precipitation is accumulated.

Daylight

The average length of the day in July is 13h and 16min.
On the first day of the month, sunrise is at 5:20 am and sunset at 6:43 pm. On the last day of July, in Merida, Mexico, sunrise is at 5:32 am and sunset at 6:37 pm CST.

Sunshine

The average sunshine in July is 11h.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index in Merida, Mexico. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In July, the maximum UV index of 7 suggests this advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. 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. Opt for tightly woven and loose clothing to enhance protection from the Sun.