Here south of Tallahassee,a bit more towards the coast,it gets really hot and humid in the summer. This area is in north florida where I live,I have read (Tallahassee),has the same growing season as Seattle and London,which struck me as kind of odd and funny,but I think its true. Sometimes I grow a few veggies in containers for the fun of it,but found the bugs and humidity too much for some of them. The ones that do best are usually,any kind of peppers,basil does well,cherry tomatoes and one you do not hear much about, but it loves heat,is new zealand spinach because it does not bolt.
I did not know peppers grow well in hot and humid weather. I am staying in tropical country, and the weather is just like these - hot and humid all year long, so I suppose I can plant peppers in my home garden too. I have tried cherry tomatoes and basil, they grew well, though sometimes the bugs love them as well. I am not sure what kind of weather mulberries love, but it seems to grow very well here too.
My extension garden on the vacant lot beside our property is bare now. It is like that during summer because of the unbearable heat. The only vegetable that I can grow is sweet potato. And it’s quite good because sweet potato is not only for the root crop but also for the young leaves which we use as vegetable ingredient to dishes. Lettuce or carrots will grow during summer but the lettuce will not bear good leaves while the carrots will have no roots for the carrot harvest. During this season, we just buy vegetables from the nearby wet market and we try to endure the high cost – vegetables are expensive in summer but fruits are cheaper.
I live in a tropical country, and it seems like it's ok to grow mango, guava, calamansi, chilli, jackfruit, and tamarind all year round. Those are the plants that we have at home, so I think that they're able to grow in the summer as well.