Jamaica Beach, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 65.6 °F (low) to 76.2 °F (high). Annual precipitation averages 52.3 Inches. Jamaica Beach is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 48.8 °F | 61.2 °F | 4.33 in. |
| February | 52.0 °F | 63.8 °F | 2.96 in. |
| March | 58.3 °F | 69.0 °F | 3.21 in. |
| April | 65.0 °F | 75.1 °F | 3.68 in. |
| May | 72.5 °F | 81.3 °F | 3.82 in. |
| June | 77.7 °F | 86.8 °F | 4.89 in. |
| July | 79.3 °F | 88.6 °F | 4.13 in. |
| August | 79.3 °F | 89.0 °F | 5.77 in. |
| September | 76.0 °F | 85.8 °F | 6.55 in. |
| October | 68.6 °F | 79.5 °F | 4.62 in. |
| November | 59.1 °F | 70.7 °F | 4.31 in. |
| December | 50.8 °F | 63.3 °F | 4.03 in. |
| Annual | 65.6 °F | 76.2 °F | 52.3 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |