Growing basil

My basil plant is dying! I think the weather is too hot this summer. Two stalks dried up already. The leaves are falling out easily and they are very crisp like lays potato chips. :(

I tried again and basil was doing really good and now that it is summer again the basil is drying up. Why are you so hot Philippine summer?

Instead of buying plants I just buy a pack of basil from the grocery store, tear off the leaves to make pesto then line up the stalks, make a fresh cut and stick em in the soil of a pot. They always grow large leaves.