Monterrey has a semi-arid steppe climate, classified as BSh in the Köppen system. The warmest month is July with an average high of 33°C, while the coldest month is January with lows dropping to 10°C. The annual temperature range of 23°C reflects moderate seasonal variation.
The driest month is August with only 5 rain days and 32mm of precipitation. For travellers, August through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 70% to 70% throughout the year.
Best Time to Visit Monterrey
Based on temperature and rainfall data, the best months to visit Monterrey are January, February, March. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
In July, Monterrey experiences average highs of 33°C (91°F) and lows of 22°C (72°F). Expect around 5 rainy days and 12 hours of sunshine per day, with humidity averaging 70%. The 11°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 9, so sun protection is advisable on clear days.
Monterrey typically sees 5 rainy days in July, with total precipitation of around 45mm. This makes July one of the drier months of the year, and a reliable window for outdoor sightseeing and day trips. Rain showers tend to be brief when they do occur. For context, the driest month in Monterrey typically sees 4-6 fewer rain days than July.
Pack lightweight, breathable clothing (linen or cotton), a wide-brim sun hat, SPF 50+ sunscreen, and a refillable water bottle for Monterrey in July. The 33°C daytime heat demands sun protection during midday hours, typically 11am to 4pm. Rain is unlikely with only 5 wet days, so leave the umbrella at home and use the bag space for sunscreen. Quick-dry synthetic fabrics are preferable to cotton in 70% humidity.
Yes, July is an excellent time to visit Monterrey. With 12 daily sunshine hours and only 5 rainy days, conditions are ideal for sightseeing and outdoor activities. Temperatures averaging 33°C during the day are comfortable for long walks and outdoor dining. This is peak travel season, so booking accommodation in advance and arriving at popular attractions early in the morning helps avoid the busiest periods.
The average high temperature in Monterrey in July is 33°C (91°F), and the average low is 22°C (72°F). The mean daily temperature is approximately 28°C (82°F). The day-to-night range of 11°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Monterrey is generally May. May offers the most sunshine at 12 hours per day and only 8 rainy days. Average temperatures reach 31°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around May gives you the best chance of dry, bright weather.
July is shoulder or low season in Monterrey, meaning fewer tourists and generally lower prices than peak months. With 12 sunshine hours and 5 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In July, Monterrey suits a range of activities thanks to warm temperatures of 33°C. With few rainy days, outdoor activities are highly recommended. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 12 hours of sunshine, parks and waterfront walks are particularly enjoyable.