The most pleasant months of the year for Del Mar Heights are November, March and April. In Del Mar Heights, there are 6 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for Del Mar Heights with an average high temperature of 92.8°, which ranks it as cooler than most places in Texas. December is the snowiest month in Del Mar Heights with 0.1 inches of snow, and no months of the year have significant snowfall. The humidity here has been described as oppressive or stifling in the summer.