Weather in Monterrey in September
Monterrey, Mexico averages a high of 29.3°C (84.7°F) and low of 20.9°C (69.6°F) in September, with 10 rain days and 10.3 hours of daily sunshine. Travel score: 83.8/100 (Excellent). The best time to visit Monterrey is August.
High
29°C85°F
Low
21°C70°F
🌧️
10
rain days
☀️
10.3
hrs/day sunshine
💧
71%
humidity
84— Excellent
September in Monterrey is hot and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Monterrey?
How much does it rain in Monterrey in September?
Monterrey receives an average of 118.1mm of rainfall across 10 rainy days in September. The annual total is 562.3mm.
What should I pack for Monterrey in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 29°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (10 days)
☔
Umbrella
Be prepared for occasional showers
🎉Visiting Mexico in September?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31