Weather in Monterrey in August
August in Monterrey is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
In Mexico, this is how Monterrey actually wears August, not how a country centroid would. Compared with June and January, August sits in the middle of Monterrey's year.
Pack for Monterrey in August, not for a brochure that was photographed in another season.

- Average temp
- 30°C
24–37°C
- Rainfall
- 81 mm
Showers likely
- Sunshine
- 8.4 h
hours per day
What to expect
Daytime
Warm days in Monterrey in August. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
August is a wetter month in Monterrey. Showers are part of the deal, not a spoiled surprise.
Waterproof shoes matter more than a rain plan for a beach, especially if a beach is not why you came. Build indoor hours into the afternoon.
Evening
Evenings stay warm.
What to pack
Sun protection
Rain jacket
A layer for cooler evenings
Where to stay in Monterrey
Dates are a starting point for August.

Travel guides for Monterrey
What to read before you book.
Average weather in Monterrey
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FAQs about Monterrey
Climate averages for Monterrey, 1991–2020.
The best time to visit Monterrey is between February and May, the most comfortable stretch of the year on these averages.
August is the hottest month, with an average around 30°C.
September is the wettest month, with about 215 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
