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

May 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
The last month of the spring, May, is another torrid month in Merida, Mexico, with average temperature ranging between min 21.7°C (71.1°F) and max 36.3°C (97.3°F).

Temperature

May is the warmest month, with an average high-temperature of 36.3°C (97.3°F) and an average low-temperature of 21.7°C (71.1°F).

Heat index

The average heat index in May is appraised at a burning hot 50.9°C (123.6°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
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 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, pregnancy, wind, and clothing affect individual temperature impact. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. 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

March and May, with an average relative humidity of 63%, are the least humid months.

Rainfall

In Merida, it is raining for 4.6 days, with typically 69.4mm (2.7") of accumulated precipitation. In Merida, during the entire year, the rain falls for 86.6 days and collects up to 1036.9mm (40.8") of precipitation.

Daylight

In Merida, the average length of the day is 13.1h.

Sunshine

The month with the most sunshine in Merida is May, with an average of 8.8h of sunshine.

UV index

Months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 12 in May interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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 warmest month in Merida?

With an average high-temperature of 36.3°C (97.3°F) and an average low-temperature of 21.7°C (71.1°F), May is the warmest month in Merida, Mexico.

What is the temperature in May in Merida?

In May, in Merida, the average high-temperature is 36.3°C (97.3°F), and the average low-temperature is 21.7°C (71.1°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, in May is appraised at 50.9°C (123.6°F).

What is the least humid month in Merida?

March and May, with an average relative humidity of 63%, are the least humid months in Merida.

What is the average humidity in May in Merida?

In May, the average relative humidity in Merida is 63%.

How many days does it rain in May in Merida?

In May, the rain falls for 4.6 days. Throughout May, 69.4mm (2.7") of precipitation is accumulated.

What is the average length of the day in May in Merida?

In May, the average length of the day in Merida, Mexico, is 13.1h.

What month has the most sunshine in Merida?

The month with the most sunshine is May, with an average of 8.8h of sunshine.

How long on average sun shines in May in Merida?

In Merida, the average sunshine in May is 8.8h.

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 intensity in May in Merida?

In Merida, Mexico, the average daily maximum UV index in May is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in May - Merida, Mexico
  • Average high temperature in May: 36.3°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 May: 21.7°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 May - Merida, Mexico
  • Average humidity in May: 63%

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

Average rainfall in May - Merida, Mexico
  • Average rainfall in May: 69.4mm

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 May - Merida, Mexico
  • Average rainfall days in May: 4.6 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 May / Average sunshine in May - Merida, Mexico
  • Average daylight in May: 13.1h

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 May: 8.8h

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 May - Merida, Mexico
  • Average UV index in May: 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).