The average temperature in Adelaide the average temperature is 37.52 degrees in summer, with precipitation around 6.0 mm , Hervey Bay, QLD's temperatures reach 30.64 during the hot season, with 12.0 average of rain rate . In winter, however, weather indicators show around 9.94 degrees in Hervey Bay, QLD, compared to the 2.22 average degrees reported in Adelaide. During the winter period, Adelaide can register 3.0 mm precipitation, while Hervey Bay, QLD have an average of 3.0 mm rain level.