Channel Islands National Park encompasses five remarkable islands and their ocean environment, preserving and protecting a wealth of natural and cultural resources. Isolation over thousands of years has created unique animals, plants, and archeological resources found nowhere else on Earth and helped preserve a place where visitors can experience coastal southern California as it once was. In general, the islands have a Mediterranean climate year-round. Temperatures are relatively stable, with highs averaging in the mid-60s (°F) and lows in the low-50s. However, there are seasonal differences to take into consideration, and ocean and weather conditions vary considerably from day to day and island to island.