Cradle Mountain: are you wondering about the weather you might find during your holiday? Befor organizing a holiday we always think about the wheather we might find when we get there. In Cradle Mountain the average yearly temperature is 11°C. During the hottest month, which in this case is February, the temperature can get up to 17°C. Instead the coldest month is July, reaching a minimum temperature of 6°C. The wettest month is August, during which we can predict 17 days of rain.