Monterrey
Mexico
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Monterrey, Mexico

The sun setting over Monterrey, Mexico, with a far view of the Sierra Madre mountain ranges
The sun setting over Monterrey, Mexico, with a far view of the Sierra Madre mountain ranges
The last month of the summer, August, is another tropical month in Monterrey, Mexico, with temperature in the range of an average low of 22.5°C (72.5°F) and an average high of 34.5°C (94.1°F).

Temperature

In August, the average high-temperature is almost the same as in July - a still tropical 34.5°C (94.1°F). The average low-temperature, in August, is 22.5°C (72.5°F).

Heat index

The average heat index in August is appraised at a scorching 45°C (113°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', 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 (wind, pregnancy, differences in body mass, height, and shape). 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in August is 63%.

Rainfall

In August, in Monterrey, the rain falls for 6.4 days. Throughout August, 81.6mm (3.2") of precipitation is accumulated. In Monterrey, during the entire year, the rain falls for 59.7 days and collects up to 590.8mm (23.3") of precipitation.

Daylight

In Monterrey, Mexico, the average length of the day in August is 13h.

Sunshine

In Monterrey, the average sunshine is 7.8h.

UV index

May through August, with an average maximum UV index of 12, are months with the highest UV index in Monterrey. A UV Index estimate of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 12 transform into the following instructions:
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. 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. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the temperature in August in Monterrey?

In Monterrey, Mexico, in August, the average high-temperature is 34.5°C (94.1°F), and the average low-temperature is 22.5°C (72.5°F). The average heat index (a.k.a. 'feels like', 'real feel'), that combines air temperature and relative humidity, in August is estimated at 45°C (113°F).

What is the average humidity in August in Monterrey?

The average relative humidity in August is 63%.

How much does it rain in Monterrey in August?

In Monterrey, Mexico, in August, during 6.4 rainfall days, 81.6mm (3.2") of precipitation is typically accumulated.

How many hours of daylight does Monterrey have in August?

The average length of the day in August in Monterrey, Mexico, is 13h.

How long on average sun shines in August in Monterrey?

In Monterrey, the average sunshine in August is 7.8h.

What are the months with the highest UV index in Monterrey?

Months with the highest UV index in Monterrey are May through August, with an average maximum UV index of 12.

What is the UV index reading in August in Monterrey?

In August, the average daily maximum UV index in Monterrey is 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to the UV radiation.
Average temperature in August - Monterrey, Mexico
  • Average high temperature in August: 34.5°C

The warmest month (with the highest average high temperature) is July (34.8°C).
The month with the lowest average high temperature is January (20.7°C).

  • Average low temperature in August: 22.5°C

The month with the highest average low temperature is August (22.5°C).
The coldest month (with the lowest average low temperature) is January (8.2°C).

Average humidity in August - Monterrey, Mexico
  • Average humidity in August: 63%

The month with the highest relative humidity is October (71%).
The month with the lowest relative humidity is March (58%).

Average rainfall in August - Monterrey, Mexico
  • Average rainfall in August: 81.6mm

The wettest month (with the highest rainfall) is September (150.6mm).
The driest month (with the lowest rainfall) is December (14.1mm).

Average rainfall days in August - Monterrey, Mexico
  • Average rainfall days in August: 6.4 days

The month with the highest number of rainy days is September (8.2 days).
Months with the lowest number of rainy days are March and December (3.4 days).

Average daylight in August / Average sunshine in August - Monterrey, Mexico
  • Average daylight in August: 13h

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in August: 7.8h

The month with most sunshine is July (Average sunshine: 8h).
The month with least sunshine is December (Average sunshine: 4.3h).

Average UV index in August - Monterrey, Mexico
  • Average UV index in August: 12

Months with the highest UV index are May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 5).