South Palm Beach, Florida has a Tropical Rainforest climate (Köppen classification: Af). Average annual temperatures range from 21 °C (low) to 27.1 °C (high). Annual precipitation averages 1564.4 Millimeters. South Palm Beach is located in USDA Plant Hardiness Zone 11a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °C | 22.9 °C | 86.11 mm |
| February | 16.4 °C | 23.8 °C | 69.85 mm |
| March | 17.8 °C | 24.7 °C | 89.66 mm |
| April | 20.4 °C | 26.1 °C | 84.07 mm |
| May | 22.5 °C | 27.7 °C | 108.97 mm |
| June | 24.3 °C | 29.6 °C | 226.31 mm |
| July | 25.1 °C | 30.6 °C | 145.29 mm |
| August | 25.3 °C | 30.8 °C | 199.9 mm |
| September | 24.9 °C | 29.8 °C | 215.14 mm |
| October | 23.2 °C | 28.3 °C | 158.5 mm |
| November | 19.7 °C | 26.1 °C | 106.43 mm |
| December | 17.2 °C | 24.2 °C | 74.17 mm |
| Annual | 21 °C | 27.1 °C | 1564.4 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 11a : 4.4°C to 7.2°C |
| Plant Hardiness Zone - 2012 | Zone 10b : 1.7°C to 4.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Af - Tropical Rainforest |