Belleair Bluffs, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 66.2 °F (low) to 80.2 °F (high). Annual precipitation averages 56.3 Inches. Belleair Bluffs is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 52.5 °F | 69.1 °F | 2.99 in. |
| February | 55.3 °F | 71.2 °F | 2.67 in. |
| March | 59.6 °F | 75.0 °F | 3.2 in. |
| April | 65.3 °F | 79.4 °F | 2.86 in. |
| May | 71.0 °F | 84.2 °F | 2.9 in. |
| June | 75.5 °F | 87.5 °F | 7.71 in. |
| July | 76.7 °F | 88.5 °F | 9.53 in. |
| August | 76.9 °F | 88.9 °F | 9.48 in. |
| September | 75.1 °F | 87.7 °F | 7.24 in. |
| October | 69.6 °F | 83.1 °F | 2.71 in. |
| November | 61.3 °F | 76.6 °F | 2.09 in. |
| December | 55.7 °F | 71.7 °F | 2.87 in. |
| Annual | 66.2 °F | 80.2 °F | 56.25 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |