Myrtle Beach Seasonal temperature break down - The average median temperature March through May is approximately 65°F with highs averaging at 75°F and lows averaging at 56°F. June through August has an approximate average median temperature of 79°F with highs averaging at 88°F, lows typically average at 72°F. Average median temperatures September through November average out at 67°F, high temperatures average out at 76°F and lows average at 57°F.
The average median temperature December through February is approximately 52°F with highs averaging at 64°F, lows average out at 41°F.
The average Myrtle Beach annual median temperature averages out at approximately 66°F. The coldest month in Myrtle Beach is January with a median temperature of 48°F, the average high for the month of January is 60°F with an average low of 38°F. The hottest month in Myrtle Beach is August with an approximate median temperature of 80°F, the average high for the month of August is 87°F with an average low of 73°F.