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 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 average high-temperature in July in Merida, at a very hot 35°C, reveals a modest deviation from June's 34.3°C. Merida's temperature drops to an average low of 23.7°C during the nights of July.

Heat index

The heat index in July is computed to be a burning hot 52°C. Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.
For clarity, heat index numbers account for light winds and areas under shade. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. 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 and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In July, the average relative humidity is 72%.

Rainfall

In July, in Merida, Mexico, the rain falls for 16.4 days. Throughout July, 59mm of precipitation is accumulated. In Merida, during the entire year, the rain falls for 167.3 days and collects up to 536mm of precipitation.

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 in Merida, Mexico, is 11h.

UV index

The months with the highest UV index in Merida, Mexico, are February through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in July interprets into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.