The climate on Fleurieu Peninsula is mild, or temperate. Sometimes the district is said to have Mediterranean climate. Except in the loftier hills districts above Willunga and around Mount Compass and Myponga, the weather is affected by the ocean.
Temperatures tend to be a few degrees milder in summer and warmer in winter.
Kangaroo Island's climate is best described as temperate. Temperatures tend to be a few degrees cooler in summer and warmer in winter than on mainland South Australia. The sea plays a large role in the island's daily weather pattern. Conditions can change frequently during the day, so pack warm clothes, even during a summer holiday.