In Japan the summer season usually is from June to Mid-September, and it will be around 30-35 degrees plus with very high humidity. Each part of Japan, across all the prefectures, will have its own local summer dishes. For example the most southern prefecture Okinawa has distinctive dishes with bitter melon and Hokkaido has sweet melons. Although summer season in Japan is hot and humid, those amazing seasonal foods will definitely boost your appetite. You can try not only typical summer ice-creams but also a variety of traditional festival foods and local dishes.