Mereta, Texas is a small unincorporated community located in Tom Green County in the west-central part of the state. The climate in Mereta is characterized as semi-arid, with hot summers and mild winters. Summers are typically long and hot, with temperatures often reaching into the triple digits, while winters are relatively mild with occasional cold spells.

The hydrology constituents in Mereta are influenced by the nearby Concho River, which flows nearby. The river provides a significant water source for the area and supports diverse wildlife and vegetation. Additionally, the region has several small creeks and ponds that contribute to the local hydrology.

Outdoor recreation opportunities in Mereta are abundant. The Concho River and surrounding water bodies offer excellent fishing and boating opportunities. Anglers can catch various species such as bass, catfish, and sunfish. The area is also suitable for hiking, camping, and bird-watching, as it is home to many species of birds and wildlife. The picturesque landscape provides opportunities for nature lovers to explore and appreciate the beautiful scenery. Overall, Mereta offers a great outdoor experience for those seeking to enjoy the natural beauty and recreational activities in the region.