Merida
Mexico
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Merida, Mexico

Scenic spring view of the Santa Ana Church in Merida, Mexico, surrounded by beautiful flowers and palm trees
Scenic spring view of the Santa Ana Church in Merida, Mexico, surrounded by beautiful flowers and palm trees
July, the same as June, is a very hot summer month in Merida, Mexico, with average temperature varying between 21.4°C (70.5°F) and 35°C (95°F).

Temperature

In July, the average high-temperature is essentially the same as in June - a still sweltering 35°C (95°F). In Merida, in July, the average low-temperature is 21.4°C (70.5°F).

Heat index

The average heat index is appraised at a life-threatening hot 51.5°C (124.7°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

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

Rainfall

In Merida, during 13.4 rainfall days, 158.7mm (6.2") of precipitation is typically accumulated. Throughout the year, there are 86.6 rainfall days, and 1036.9mm (40.8") of precipitation is accumulated.

Daylight

The average length of the day in July is 13.3h.

Sunshine

In July, the average sunshine in Merida is 7.9h.

UV index

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 excessive health risk from the exposure to the Sun's UV radiation for the average person.
Note: In July, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in July in Merida?

The average high-temperature, in July, is 35°C (95°F), while the average low-temperature is 21.4°C (70.5°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in July is estimated at 51.5°C (124.7°F).

What is the average humidity in July in Merida?

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

How much does it rain in Merida in July?

In Merida, Mexico, in July, during 13.4 rainfall days, 158.7mm (6.2") of precipitation is typically accumulated.

How many hours of daylight does Merida have in July?

In Merida, the average length of the day in July is 13.3h.

How many hours of sunshine does Merida have in July?

In Merida, Mexico, the average sunshine in July is 7.9h.

When is the highest UV index in Merida?

Months with the highest UV index in Merida, Mexico, are April through August, with an average maximum UV index of 12.

What is the UV index reading in July in Merida?

The average daily maximum UV index in July is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in July - Merida, Mexico
  • Average high temperature in July: 35°C

The warmest month (with the highest average high temperature) is May (36.3°C).
The month with the lowest average high temperature is December (30.6°C).

  • Average low temperature in July: 21.4°C

The month with the highest average low temperature is May (21.7°C).
The coldest month (with the lowest average low temperature) is January (17.2°C).

Average humidity in July - Merida, Mexico
  • Average humidity in July: 72%

The month with the highest relative humidity is September (76%).
Months with the lowest relative humidity are March and May (63%).

Average rainfall in July - Merida, Mexico
  • Average rainfall in July: 158.7mm

The wettest month (with the highest rainfall) is September (183.1mm).
The driest month (with the lowest rainfall) is March (22.5mm).

Average rainfall days in July - Merida, Mexico
  • Average rainfall days in July: 13.4 days

The month with the highest number of rainy days is September (13.9 days).
The month with the lowest number of rainy days is April (1.9 days).

Average daylight in July / Average sunshine in July - Merida, Mexico
  • Average daylight in July: 13.3h

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in July: 7.9h

The month with most sunshine is May (Average sunshine: 8.8h).
The month with least sunshine is December (Average sunshine: 6.5h).

Average UV index in July - Merida, Mexico
  • Average UV index in July: 12

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 7).