Holmes Beach, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 19.9 °C (low) to 26.1 °C (high). Annual precipitation averages 1517.9 Millimeters. Holmes Beach is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.5 °C | 20.1 °C | 86.11 mm |
| February | 14.2 °C | 20.9 °C | 68.33 mm |
| March | 16.3 °C | 22.8 °C | 87.38 mm |
| April | 19.1 °C | 25.4 °C | 72.14 mm |
| May | 22.3 °C | 28.2 °C | 76.45 mm |
| June | 24.8 °C | 30.1 °C | 202.95 mm |
| July | 25.3 °C | 30.9 °C | 229.36 mm |
| August | 25.3 °C | 31.2 °C | 264.92 mm |
| September | 24.7 °C | 30.4 °C | 214.12 mm |
| October | 22.1 °C | 27.8 °C | 90.17 mm |
| November | 17.6 °C | 23.8 °C | 52.07 mm |
| December | 14.3 °C | 21.3 °C | 73.91 mm |
| Annual | 19.9 °C | 26.1 °C | 1517.91 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 1.7°C to 4.4°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |