Monterrey Weather in December
Thinking of visiting Monterrey in December? Expect pleasant temperatures reaching 20°C (68°F) during the day, dropping to 9°C (48°F) at night, with the driest conditions of the year.
Rainfall in Monterrey in December
Known for its least rainfall, this month is the best of the year for people who like to spend time outdoors. Analyzing past climate data, one can expect approximately 3 days of rain, averaging 38 mm (1.5 in). Although rain is not especially frequent, individual showers can still be quite heavy.
Temperature in Monterrey in December
Monterrey in December is worth a visit. The temperature is perfect, with 20°C (68°F) during the day and 9°C (48°F) at night. Winter occurs in December. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Monterrey in December
The month brings about 135 hours of sunlight, offering a comfortable mix of sun and overcast.If you favor pleasant temperatures and minimal rainfall, December is one of the best months to visit Monterrey.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Monterrey's climate page.
Monterrey Temperature in December
Min Temperature
9°C (48°F)
Max Temperature
20°C (68°F)
Chance of Rain
10%
Precipitation
38 mm (1.5 in)
Rainy days
3 days
Humidity
69%
Sunshine
135 hours
Percentage Sunshine
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Monterrey typically stay consistent throughout December, with daily highs averaging around 20°C (68°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in December
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Monterrey in December
Browse day-by-day weather records for Monterrey spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Monterrey historical weather extremes in December
Based on 39 years of weather observations (1986-2025), these are the most extreme conditions recorded in Monterrey.
- The warmest day in December was on December 25, 2021, with a maximum of 36°C (97°F).
- The coldest night in December in Monterrey was on December 23, 1989, with a minimum of -6°C (21°F).
Best Places in Mexico in December
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in December →
perfect weather
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tolerable
unpleasant
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What to Wear in Monterrey in December
Comfortable temperatures call for an easy wardrobe in December. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Monterrey in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Monterrey's climate page.
Temperature Rainfall Sunshine Humidity
See the full Monterrey climate overview or explore weather in Mexico.
