South Beach, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 18.9 °C (low) to 27.3 °C (high). Annual precipitation averages 1449.6 Millimeters. South Beach is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.2 °C | 22.1 °C | 70.1 mm |
| February | 13.3 °C | 23.2 °C | 66.29 mm |
| March | 15.4 °C | 24.6 °C | 84.07 mm |
| April | 18 °C | 26.8 °C | 78.23 mm |
| May | 20.8 °C | 28.8 °C | 112.27 mm |
| June | 23.1 °C | 30.7 °C | 180.59 mm |
| July | 23.7 °C | 31.8 °C | 154.94 mm |
| August | 24.1 °C | 31.6 °C | 202.18 mm |
| September | 23.7 °C | 30.8 °C | 203.2 mm |
| October | 21.4 °C | 28.7 °C | 148.08 mm |
| November | 17.1 °C | 25.7 °C | 82.8 mm |
| December | 14.2 °C | 23.3 °C | 66.8 mm |
| Annual | 18.9 °C | 27.3 °C | 1449.55 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |