Summer is a great time to visit Iceland! You'll not only be able to take advantage of the longest days of the year and the warmest weather, but you'll also experience Iceland's rich bird life, trek on glaciers, and see the vivid colorful environment without being weighed down by heavy, warm layers of clothing. There are a few things that may be unavailable during the summer, usually ice-related such as ice cave excursions, but there are plenty of activities that you may enjoy like powerful cascading waterfalls, horse riding, self-driving tours, and puffin watching trips. However, some activities are exclusive to Icelandic summers, like summer festivals.