You may well have seen other articles on what wines you should drink this summer. They likely told you to drink rosé, Sauvignon Blanc, Pinot Gris, and maybe Chardonnay, Grenache or Pinot Noir. I won't be mentioning those. These all work, but they can be kind of boring.
For the warm weather you want refreshing (that means good acid), dry, and chillable.
Following are a few whites and reds to enjoy in the warmth with lighter foods and BBQs. These wines are higher in acids and lower in tannins. Perfect for summer. You'll see that most of these grapes have their homes in warmer regions -- Spain, Italy, and southern France.