South Florida's warm weather was the only reason anyone ever thought of inhabiting the area in the first place. Ideal conditions on Miami Beach exist between December and May, when temperatures average between 15°C (60°F) and 30°C (85°F), and rainfall is scant. Summer is very hot and humid, with thunderstorms rolling in during the late afternoon. June is the rainiest month, August the hottest, and hurricanes hit from July through September. Because of the humidity, Miami heat can often feel a lot hotter than the temperature reading suggests, but ocean breezes help clear the sultry air.
| Month | Temp (°C) | Rainfall (mm) | Humidity (%) | Sunshine (hours) |
| Jan | 16 - 23 | 71 | 8 | |
| Feb | 16 - 24 | 53 | 8 | |
| Mar | 18 - 26 | 64 | 9 | |
| Apr | 19 - 27 | 81 | 9 | |
| May | 22 - 29 | 173 | 9 | |
| Jun | 23 - 30 | 178 | 9 | |
| Jul | 24 - 31 | 155 | 9 | |
| Aug | 24 - 31 | 160 | 8 | |
| Sep | 24 - 31 | 203 | 7 | |
| Oct | 22 - 28 | 234 | 6 | |
| Nov | 19 - 26 | 71 | 7 | |
| Dec | 17 - 24 | 51 | 7 |