Planning for the weather is an important factor for making your trip to Yorke Island a success, especially when you’re splurging. The hottest months are usually January and December, with an average temperature of 27°C, while the coldest months are August and July, with an average of 25°C. The rainiest months in Yorke Island are March, May, April and February, with each month seeing an average of 375 mm of rainfall.