Weather and climate in Monterrey (Nuevo León)

The climate of Monterrey is sub-tropical, with a very mild winter from December to February and a very hot, relatively rainy summer from April to October.
The city is located in northeastern Mexico, in the state of Nuevo León, east of the Sierra Madre Oriental, and at the 25th parallel.
The winter is very mild, but occasionally there may be short cold spells, in which it can even snow, as happened on Christmas Eve 2004.
Despite the altitude (we are at 500 meters or 1,650 feet above sea level), Monterrey a very hot city, also because hot foehn-like winds can blow from the summits of the Sierra Madre Oriental, which reach 3,700 meters (12,000 feet). For this reason, from April to June, the temperature can sometimes reach 43/45 °C (109/113 °F). However, hot days, with highs above 30 °C (86 °G), can also occur in winter.
Monterrey can sometimes be affected by hurricanes. The hurricane season runs from June to November, although they are more likely from August to October. A particularly intense hurricane was Alex, which hit the city between June and July 2011.
The average temperature of the coldest month (January) is of 15.6 °C (60 °F), that of the warmest month (August) is of 29.4 °C (84.9 °F). Here are the average temperatures.

Precipitation amounts to 590 millimeters (23.2 inches) per year: so, it is at an intermediate level. It ranges from 15 mm (0.6 in) in the driest months (January, February, December) to 150 mm (5.9 in) in the wettest (September). Here is the average precipitation.

On average, there are around 2,240 sunshine hours per year. Here are the average sunshine hours per day.

Best Time

To visit Monterrey, you can choose the period from December to February: it is true that it can get cold every now and then, but in this way you can avoid the very hot days that can occur in the rest of the year.

Monterrey - Weather by month

Based on the period 1991-2020

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January, the coldest month of the year, is generally a very mild month. The average temperature is of 15.6 °C (60 °F), with a minimum of 9.6 °C (49.2 °F) and a maximum of 21.5 °C (70.8 °F).
On the coldest nights of the month, the temperature usually drops to around 2 °C (35 °F). However, it dropped to -3 °C (26.6 °F) in January 2010.
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, it reached 35 °C (95 °F) in January 1994.
Precipitation amounts to 15 mm (0.6 in), distributed over 4 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 63%.
The average wind speed is 12 kph (7 mph).

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February is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of 18.2 °C (65 °F), with a minimum of 11.6 °C (53 °F) and a maximum of 24.6 °C (76.4 °F).
On the coldest nights of the month, the temperature usually drops to around 4 °C (39 °F). However, it dropped to -5 °C (23 °F) in February 2011.
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F). However, it reached 40 °C (104 °F) in February 2009.
Precipitation amounts to 15 mm (0.6 in), distributed over 4 days.
The day lasts on average 11 hours and 20 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 61%.
The average wind speed is 13 kph (8 mph).

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March is generally a warm month. The average temperature is of 21.4 °C (71 °F), with a minimum of 15 °C (58.9 °F) and a maximum of 27.8 °C (82.1 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 6.5 °C (44 °F). However, it dropped to 1 °C (33.8 °F) in March 2014.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 36.5 °C (98 °F). However, it reached 41 °C (105.8 °F) in March 1991.
Precipitation amounts to 20 mm (0.8 in), distributed over 3 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 59%.
The average wind speed is 14 kph (9 mph).

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April is generally a warm to hot month. The average temperature is of 24.6 °C (76 °F), with a minimum of 18.2 °C (64.7 °F) and a maximum of 31.1 °C (88 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 10.5 °C (51.5 °F). However, it dropped to 4 °C (39.2 °F) in April 2007.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 39 °C (102 °F). However, it reached 43 °C (109.4 °F) in April 1999.
Precipitation amounts to 30 mm (1.2 in), distributed over 5 days.
The day lasts on average 12 hours and 50 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 59%.
The average wind speed is 14 kph (9 mph).

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May is generally a warm to hot month. The average temperature is of 27.1 °C (81 °F), with a minimum of 21.3 °C (70.4 °F) and a maximum of 33 °C (91.4 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 15.5 °C (60 °F). However, it dropped to 9 °C (48.2 °F) in May 2004.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 39 °C (102.5 °F). However, it reached 44 °C (111.2 °F) in May 1995.
Precipitation amounts to 50 mm (2 in), distributed over 6 days.
The day lasts on average 13 hours and 25 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 64%.
The average wind speed is 15 kph (9 mph).

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June is generally a very hot month. The average temperature is of 29.1 °C (84 °F), with a minimum of 23.2 °C (73.8 °F) and a maximum of 34.9 °C (94.9 °F).
On the coldest nights, the temperature usually drops to around 20.5 °C (68.5 °F). However, it dropped to 16 °C (60.8 °F) in June 2009.
On the warmest days, the temperature usually reaches around 39 °C (102.5 °F). However, it reached 45 °C (113 °F) in June 1998.
Precipitation amounts to 70 mm (2.8 in), distributed over 6 days.
The day lasts on average 13 hours and 40 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 7 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 61%.
The average wind speed is 16 kph (10 mph).

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July is generally a very hot month. The average temperature is of 29.3 °C (85 °F), with a minimum of 23.4 °C (74 °F) and a maximum of 35.3 °C (95.5 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70 °F). However, it dropped to 19 °C (66.2 °F) in July 2004.
On the warmest days of the month, the temperature usually reaches around 38.5 °C (101 °F). However, it reached 41 °C (105.8 °F) in July 1998.
Precipitation amounts to 45 mm (1.8 in), distributed over 4 days.
The day lasts on average 13 hours and 30 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 60%.
The average wind speed is 15 kph (9 mph).

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August, the hottest month of the year, is generally a very hot month. The average temperature is of 29.4 °C (85 °F), with a minimum of 23.3 °C (74 °F) and a maximum of 35.5 °C (95.9 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70 °F). However, it dropped to 19 °C (66.2 °F) in August 2003.
On the warmest days of the month, the temperature usually reaches around 39 °C (102 °F). However, it reached 45 °C (113 °F) in August 1993.
Precipitation amounts to 80 mm (3.1 in), distributed over 6 days.
The day lasts on average 13 hours and 0 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 59%.
The average wind speed is 13 kph (8 mph).

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September is generally a warm to hot month. The average temperature is of 26.8 °C (80 °F), with a minimum of 21.8 °C (71.2 °F) and a maximum of 31.9 °C (89.5 °F).
On the coldest nights, the temperature usually drops to around 17 °C (62 °F). However, it dropped to 12 °C (53.6 °F) in September 1995.
On the warmest days, the temperature usually reaches around 36.5 °C (98 °F). However, it reached 41 °C (105.8 °F) in September 2000.
Precipitation amounts to 150 mm (5.9 in), distributed over 8 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 70%.
The average wind speed is 11 kph (7 mph).

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October is generally a warm to hot month. The average temperature is of 23.5 °C (74 °F), with a minimum of 18.3 °C (65 °F) and a maximum of 28.7 °C (83.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 9.5 °C (49 °F). However, it dropped to 0 °C (32 °F) in October 1993.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 34.5 °C (94.5 °F). However, it reached 39 °C (102.2 °F) in October 2015.
Precipitation amounts to 75 mm (3 in), distributed over 7 days.
The day lasts on average 11 hours and 30 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 70%.
The average wind speed is 11 kph (7 mph).

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November is generally a warm month. The average temperature is of 19.1 °C (66 °F), with a minimum of 13.9 °C (57 °F) and a maximum of 24.3 °C (75.8 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 5.5 °C (42 °F). However, it dropped to -1 °C (30.2 °F) in November 2018.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 33 °C (91 °F). However, it reached 36 °C (96.8 °F) in November 1994.
Precipitation amounts to 25 mm (1 in), distributed over 4 days.
The day lasts on average 10 hours and 55 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 68%.
The average wind speed is 11 kph (7 mph).

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December is generally a very mild month. The average temperature is of 15.8 °C (61 °F), with a minimum of 10.2 °C (50.3 °F) and a maximum of 21.5 °C (70.7 °F).
On the coldest nights of the month, the temperature usually drops to around 2 °C (35.5 °F). However, it dropped to -5 °C (23 °F) in December 2004.
On the warmest days of the month, the temperature usually reaches around 31.5 °C (89 °F). However, it reached 36 °C (96.8 °F) in December 2019.
Precipitation amounts to 15 mm (0.6 in), distributed over 3 days.
The day lasts on average 10 hours and 35 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 4.5 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 65%.
The average wind speed is 11 kph (7 mph).