What is the most likely explanation for the difference in average high temperatures in July for these two cities?

A Galveston is exposed to westerly winds, while Del Rio is exposed to easterly winds.
R Warm ocean water off Galveston radiates more heat than the desert near Del Rio.
Galveston receives less rainfall because it is near the ocean, while Del Rio receives more rainfall because it is inland.
▸ Ocean breezes keep coastal Galveston cooler than Del Rio, which is inland and exposed to southerly winds.

Ocean breezes keep coastal Galveston cooler than Del Rio, which is inland and exposed to southerly winds.