Belle Isle, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 17.2 °C (low) to 28.1 °C (high). Annual precipitation averages 1339.6 Millimeters. Belle Isle is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.6 °C | 21.6 °C | 68.58 mm |
| February | 11.1 °C | 23.2 °C | 55.12 mm |
| March | 13.3 °C | 25.6 °C | 76.96 mm |
| April | 16.2 °C | 28.3 °C | 68.58 mm |
| May | 19.4 °C | 31 °C | 99.31 mm |
| June | 22.3 °C | 32.4 °C | 213.61 mm |
| July | 23.3 °C | 33.1 °C | 193.29 mm |
| August | 23.5 °C | 33 °C | 199.64 mm |
| September | 22.7 °C | 31.8 °C | 165.86 mm |
| October | 19.3 °C | 29.2 °C | 87.12 mm |
| November | 14.6 °C | 25.5 °C | 47.5 mm |
| December | 11.4 °C | 22.8 °C | 64.01 mm |
| Annual | 17.2 °C | 28.1 °C | 1339.58 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |