Climate almanac
Key Biscayne
Florida, US · 25.69°, -80.16°
What is the climate like in Key Biscayne?
Key Biscayne is warmest in August, when daily highs average 87°F (30°C), and coolest in January, when lows fall to about 65°F (18°C). The wettest month is typically September and the driest is February; the year sees roughly 54 in of precipitation.
- Warmest monthAugust — average high 87°F (30°C)
- Coolest monthJanuary — average low 65°F (18°C)
- Wettest monthSeptember (8.6 in)
- Driest monthFebruary (1.7 in)
- Annual precipitation54 in