Monterrey, Mexico Climate & Monthly Averages
The climate of Monterrey
Located in Mexico, Monterrey experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 94°F (34°C) in August and dip to about 67°F (19°C) in January, with around 24.0 inches (610 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: August - highs near 94°F (34°C)
- Coldest month: January - highs near 67°F (19°C)
- Record high: 112°F (44°C) · Record low: 19°F (-7°C) (2015–2024)
- Wettest month: September (11 rainy days) · Sunniest: July (12.1 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 94°F (34°C) and overnight lows stay near 74°F (23°C). The coolest month is January, with typical highs of 67°F (19°C) and lows around 48°F (9°C). Based on 2015–2024 weather data, temperatures have reached as high as 112°F (44°C) and dropped as low as 19°F (-7°C).
Rain, sun and snow
September is usually the wettest month. It brings about 4.5 inches (114 mm) of rain over 11 days, while February is the driest. July brings the most sunshine, averaging 12.1 hours of sun a day.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 67° | 48° | 6 | 1.1 in | 8.2 h/day | 65% |
| February | 73° | 52° | 4 | 0.8 in | 9.2 h/day | 62% |
| March | 79° | 58° | 7 | 2.2 in | 9.5 h/day | 63% |
| April | 84° | 63° | 9 | 2.0 in | 10.1 h/day | 65% |
| May | 88° | 69° | 11 | 2.5 in | 10.9 h/day | 71% |
| June | 91° | 71° | 8 | 2.6 in | 12.0 h/day | 67% |
| July | 93° | 73° | 6 | 1.9 in | 12.1 h/day | 62% |
| August | 94° | 74° | 5 | 1.0 in | 12.0 h/day | 59% |
| September | 87° | 71° | 11 | 4.5 in | 10.4 h/day | 70% |
| October | 80° | 64° | 8 | 2.9 in | 9.4 h/day | 71% |
| November | 73° | 57° | 7 | 1.5 in | 8.5 h/day | 73% |
| December | 70° | 52° | 5 | 1.1 in | 8.4 h/day | 67% |
Monterrey month by month
Monterrey weather in January
January brings highs around 67°F (19°C), lows near 48°F (9°C), about 6 wet days - typically the coldest month of the year in Monterrey.
Monterrey weather in February
February brings highs around 73°F (23°C), lows near 52°F (11°C), about 4 wet days - typically the driest month of the year in Monterrey.
Monterrey weather in March
March brings highs around 79°F (26°C), lows near 58°F (14°C), about 7 wet days.
Monterrey weather in April
April brings highs around 84°F (29°C), lows near 63°F (17°C), about 9 wet days.
Monterrey weather in May
May brings highs around 88°F (31°C), lows near 69°F (20°C), about 11 wet days.
Monterrey weather in June
June brings highs around 91°F (33°C), lows near 71°F (22°C), about 8 wet days.
Monterrey weather in July
July brings highs around 93°F (34°C), lows near 73°F (23°C), about 6 wet days - typically the sunniest month of the year in Monterrey.
Monterrey weather in August
August brings highs around 94°F (34°C), lows near 74°F (23°C), about 5 wet days - typically the hottest month of the year in Monterrey.
Monterrey weather in September
September brings highs around 87°F (30°C), lows near 71°F (22°C), about 11 wet days - typically the wettest month of the year in Monterrey.
Monterrey weather in October
October brings highs around 80°F (27°C), lows near 64°F (18°C), about 8 wet days.
Monterrey weather in November
November brings highs around 73°F (23°C), lows near 57°F (14°C), about 7 wet days.
Monterrey weather in December
December brings highs around 70°F (21°C), lows near 52°F (11°C), about 5 wet days.
Seasons in Monterrey
Spring (March through May)
Spring in Monterrey is hot, with daytime highs averaging 84°F (29°C) and nights around 63°F (17°C); expect showers on roughly 27 days across the season.
Summer (June through August)
Summer in Monterrey brings serious heat, with daytime highs averaging 92°F (34°C) and nights around 73°F (23°C); expect showers on roughly 19 days across the season.
Fall (September through November)
Fall in Monterrey brings comfortable warmth, with daytime highs averaging 80°F (27°C) and nights around 64°F (18°C); expect showers on roughly 26 days across the season.
Winter (December through February)
Winter in Monterrey brings comfortable warmth, with daytime highs averaging 70°F (21°C) and nights around 51°F (10°C); rain falls on about 14 days over the three months.
Climate questions, answered
What is the average temperature in Monterrey?
Is Monterrey hot in summer?
Is Monterrey cold in winter?
How many rainy days does Monterrey get in a year?
Best time to visit Monterrey
The best time to visit Monterrey is generally October to March, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 74°F (23°C).
Pack for Monterrey with lightweight, breathable clothing and strong sun protection for the hot months; rain gear if you travel around September. Evenings can feel noticeably cooler than afternoons - August nights average 74°F (23°C).
Monterrey temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.