Castroville, Texas, is a small city located in Medina County. The climate in Castroville is hot and humid during the summer months, with temperatures averaging in the 90s. During the winter months, temperatures can dip below freezing. The city sits near the Medina River, which provides hydrology constituents for the area, including irrigation for agriculture. Outdoor recreation opportunities in Castroville include fishing, kayaking, and swimming in the Medina River. The city is also home to the Castroville Regional Park, which offers a variety of outdoor activities, including camping, hiking, and birdwatching. Visitors can also explore the historic downtown area, which features unique architecture and shops.