Murrells Inlet, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.3 °C (low) to 22.7 °C (high). Annual precipitation averages 1425.2 Millimeters. Murrells Inlet is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.2 °C | 13.3 °C | 95.76 mm |
| February | 4.5 °C | 14.8 °C | 82.04 mm |
| March | 7.7 °C | 18.1 °C | 104.65 mm |
| April | 12.4 °C | 22.7 °C | 95.25 mm |
| May | 17.2 °C | 26.6 °C | 93.47 mm |
| June | 21.4 °C | 29.4 °C | 133.6 mm |
| July | 23.3 °C | 31.1 °C | 152.4 mm |
| August | 22.7 °C | 30.3 °C | 180.34 mm |
| September | 20 °C | 28.3 °C | 189.48 mm |
| October | 14.2 °C | 24.2 °C | 130.05 mm |
| November | 8 °C | 19 °C | 73.66 mm |
| December | 4.9 °C | 15.1 °C | 94.49 mm |
| Annual | 13.3 °C | 22.7 °C | 1425.19 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |