August weather forecast
Monterrey, Mexico

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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

Weather in August

August continues the high-temperature trend in Monterrey with temperatures reaching up to 31.7°C (89.1°F), marking it as the hottest month of the year. However, this is balanced by a decrease in daylight hours and sunshine duration compared to July. Though being the warmest month, rainfall and humid conditions are less severe than the previous months. August wraps up the summer with a gusty affair as wind speed slows down a little as compared to July. For visitors and locals, August’s distinctive weather patterns offer versatility for a range of activities.

Temperature

August, with an average high of 31.7°C (89.1°F) and a low of 20.8°C (69.4°F), signifies the warmest month of the year.

Heat index

The heat index value during August is evaluated at a fiery hot 35°C (95°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in August is 56%.

Rainfall

In Monterrey, in August, during 16.9 rainfall days, 61mm (2.4") of precipitation is typically accumulated. Throughout the year, in Monterrey, there are 158.3 rainfall days, and 602mm (23.7") of precipitation is accumulated.

Snowfall

January through November are months without snowfall in Monterrey, Mexico.

Daylight

The average length of the day in August is 13h and 1min.
On the first day of the month, sunrise is at 6:08 am and sunset at 7:26 pm. On the last day of August, in Monterrey, Mexico, sunrise is at 6:21 am and sunset at 7:01 pm CST.

Sunshine

In August, the average sunshine in Monterrey is 9.5h.

UV index

In Monterrey, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What part of the year is the hottest in Monterrey?

In Monterrey, the peak temperatures are generally noted in August, averaging a high of 31.7°C (89.1°F) and a low of 20.8°C (69.4°F).

How hot is August in Monterrey?

During August, Monterrey experiences an average high-temperature of 31.7°C (89.1°F) and a low-temperature of 20.8°C (69.4°F). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 35°C (95°F).

What is the average humidity in August in Monterrey?

In August, the average relative humidity in Monterrey, Mexico, is 56%.

How many days does it rain in August in Monterrey?

In Monterrey, in August, it is raining for 16.9 days, with typically 61mm (2.4") of accumulated precipitation.

When it does not snow in Monterrey?

January through November are months without snowfall in Monterrey, Mexico.

How many hours of daylight does Monterrey have in August?

In Monterrey, the average day length in August is 13h and 1min.

When is the sunrise / sunset in August in Monterrey?

In August, on the first day of the month, sunrise is at 6:08 am and sunset at 7:26 pm. On the last day of the month, in Monterrey, Mexico, sunrise is at 6:21 am and sunset at 7:01 pm CST.

How long on average sun shines in August in Monterrey?

The average sunshine duration in August in Monterrey is 9.5h.

What is the UV index intensity in August in Monterrey?

In Monterrey, Mexico, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in August
Monterrey, Mexico

Average temperature in August - Monterrey, Mexico
  • Average high temperature in August: 31.7°C

The warmest month (with the highest average high temperature) is August (31.7°C).
The month with the lowest average high temperature is January (18.5°C).

  • Average low temperature in August: 20.8°C

The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is January (8.3°C).

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Average pressure in August
Monterrey, Mexico

Average pressure in August - Monterrey, Mexico
  • Average pressure in August: 1013.5mbar

The month with the highest atmospheric pressure is January (1019.5mbar).
The month with the lowest atmospheric pressure is May (1011.6mbar).

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Average wind speed in August
Monterrey, Mexico

Average wind speed in August - Monterrey, Mexico
  • Average wind speed in August: 10.8km/h

The windiest months (with the highest average wind speed) are June and July (11.9km/h).
The calmest month (with the lowest average wind speed) is December (7.4km/h).

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Average humidity in August
Monterrey, Mexico

Average humidity in August - Monterrey, Mexico
  • Average humidity in August: 56%

The month with the highest relative humidity is September (69%).
The month with the lowest relative humidity is April (50%).

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Average rainfall in August
Monterrey, Mexico

Average rainfall in August - Monterrey, Mexico
  • Average rainfall in August: 61mm

The wettest month (with the highest rainfall) is May (105mm).
The driest month (with the least rainfall) is February (12mm).

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Average rainfall days in August
Monterrey, Mexico

Average rainfall days in August - Monterrey, Mexico
  • Average rainfall days in August: 16.9 days

The month with the highest number of rainy days is September (22.8 days).
The month with the least rainy days is December (6 days).

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Average snowfall in August
Monterrey, Mexico

Average snowfall in August - Monterrey, Mexico
  • Average snowfall in August: 0mm

The month with the highest snowfall is December (6mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in August
Monterrey, Mexico

Average snowfall days in August - Monterrey, Mexico
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in August /
Average sunshine in August
Monterrey, Mexico

Average daylight in August / Average sunshine in August - Monterrey, Mexico
  • Average daylight in August: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in August: 9h and 3min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 7h and 0min).

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Average sunshine days in August
Monterrey, Mexico

Average sunshine days in August - Monterrey, Mexico
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is September (5.5 days).

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Average UV index in August
Monterrey, Mexico

Average UV index in August - Monterrey, Mexico
  • Average UV index in August: 6

The months with the highest UV index are May and July (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

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Average cloud cover in August
Monterrey, Mexico

Average cloud cover in August - Monterrey, Mexico
  • Average cloud cover in August: 15

The month with the most cloud cover is September (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 15).

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Average visibility in August
Monterrey, Mexico

Average visibility in August - Monterrey, Mexico
  • Average visibility in August: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (10km).
The month with the lowest visibility is September (9km).

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Monterrey, Mexico

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