Captiva, Florida has a Tropical Savanna (Wet and Dry Climate) climate (Köppen classification: Aw). Average annual temperatures range from 20 °C (low) to 28.3 °C (high). Annual precipitation averages 1306.1 Millimeters. Captiva is located in USDA Plant Hardiness Zone 11a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.8 °C | 22.3 °C | 51.05 mm |
| February | 15 °C | 23.8 °C | 42.93 mm |
| March | 16.6 °C | 25.6 °C | 52.58 mm |
| April | 19.4 °C | 28.2 °C | 42.67 mm |
| May | 22.1 °C | 30.5 °C | 73.66 mm |
| June | 24.1 °C | 32 °C | 227.08 mm |
| July | 24.7 °C | 32.7 °C | 201.93 mm |
| August | 24.8 °C | 32.7 °C | 193.04 mm |
| September | 24.2 °C | 31.9 °C | 222.5 mm |
| October | 21.9 °C | 29.7 °C | 90.42 mm |
| November | 18.2 °C | 26.4 °C | 56.13 mm |
| December | 15.6 °C | 23.7 °C | 52.07 mm |
| Annual | 20 °C | 28.3 °C | 1306.06 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 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Aw - Tropical Savanna (Wet and Dry Climate) |