The average temperature in Halifax the average temperature is 28.54 degrees in summer, with precipitation around 3.0 mm , Myrtle Beach, SC's temperatures reach 34.24 during the hot season, with 12.0 average of rain rate . In winter, however, weather indicators show around -2.76 degrees in Myrtle Beach, SC, compared to the -15.55 average degrees reported in Halifax. During the winter period, Halifax can register 3.0 mm precipitation, while Myrtle Beach, SC have an average of 9.0 mm rain level.