July in Heroica Matamoros averages a daily high of 34.5°C with nights around 25.1°C. Expect roughly 5.3 wet days totalling 64.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Heroica Matamoros is November–March.
Based on BROWNSVILLE S PADRE ISLAND INTERNATIONAL AIRPORT, TX US (9.4km), 1995–2024. 30 years of July data.