South Padre Island, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 69 °F (low) to 79.3 °F (high). Annual precipitation averages 25.5 Inches. South Padre Island is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 54.9 °F | 67.2 °F | 1.59 in. |
| February | 57.8 °F | 69.5 °F | 1.24 in. |
| March | 62.9 °F | 73.2 °F | 1.48 in. |
| April | 68.7 °F | 77.9 °F | 1.31 in. |
| May | 74.5 °F | 83.4 °F | 1.83 in. |
| June | 78.2 °F | 87.3 °F | 2.04 in. |
| July | 79.1 °F | 88.6 °F | 1.38 in. |
| August | 79.8 °F | 89.3 °F | 1.8 in. |
| September | 77.8 °F | 87.5 °F | 5.86 in. |
| October | 73.2 °F | 82.6 °F | 3.06 in. |
| November | 64.4 °F | 75.8 °F | 2.0 in. |
| December | 56.7 °F | 69.3 °F | 1.87 in. |
| Annual | 69 °F | 79.3 °F | 25.46 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 35°F to 30°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |