The best time to visit the Azores is from June to September. This is not a tropical destination, but it is light and sunny during the summer. As everywhere in Europe, you may want to avoid August, as it is consistently the busiest month of the year. The weather is fantastic during August, but the crowds and prices may be less than optimal. If you don't need to travel in August, consider one of the other summer months. Otherwise, order early. Spent some time in the Azores in winter. It's great for hiking or enjoying the hot springs in São Miguel, but the temperature and rainfall don't make it an ideal time to visit the many activities.