Awendaw, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.9 °F (low) to 75 °F (high). Annual precipitation averages 54.7 Inches. Awendaw is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.3 °F | 58.6 °F | 3.37 in. |
| February | 40.2 °F | 61.1 °F | 3.36 in. |
| March | 46.2 °F | 67.4 °F | 3.82 in. |
| April | 54.2 °F | 75.0 °F | 3.31 in. |
| May | 62.9 °F | 81.5 °F | 3.39 in. |
| June | 69.9 °F | 87.0 °F | 6.11 in. |
| July | 73.5 °F | 89.9 °F | 6.46 in. |
| August | 72.6 °F | 88.5 °F | 6.79 in. |
| September | 67.9 °F | 84.5 °F | 6.59 in. |
| October | 57.2 °F | 76.8 °F | 4.96 in. |
| November | 46.6 °F | 68.0 °F | 2.94 in. |
| December | 41.2 °F | 61.3 °F | 3.62 in. |
| Annual | 55.9 °F | 75 °F | 54.72 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |