Key Biscayne, FL weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Key Biscayne now
Loading the National Weather Service forecast…
Key Biscayne weather by the hour
Key Biscayne weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Key Biscayne.
This week in Key Biscayne
Sunrise, sunset and moon in Key Biscayne
What is the weather usually like in Key Biscayne?
Köppen climate classification, calculated from the 1991–2020 normals
- Augustwarmest month · 91°F average high
- Januarycoldest month · 63°F average low
- 55.3 inprecipitation per year · 1,406 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Key Biscayne: December to March, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CAPE FLORIDA, FL US (USC00081306), adjusted for the elevation of Key Biscayne.
Key Biscayne weather month by month
Sunrise and sunset in Key Biscayne through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:07 AM | 5:52 PM | 10 h 45 min |
| February | 6:54 AM | 6:15 PM | 11 h 21 min |
| March | 7:28 AM | 7:30 PM | 12 h 2 min |
| April | 6:56 AM | 7:44 PM | 12 h 48 min |
| May | 6:33 AM | 8:00 PM | 13 h 26 min |
| June | 6:27 AM | 8:14 PM | 13 h 46 min |
| July | 6:37 AM | 8:15 PM | 13 h 37 min |
| August | 6:52 AM | 7:57 PM | 13 h 4 min |
| September | 7:05 AM | 7:26 PM | 12 h 20 min |
| October | 7:18 AM | 6:54 PM | 11 h 36 min |
| November | 6:37 AM | 5:33 PM | 10 h 55 min |
| December | 6:58 AM | 5:33 PM | 10 h 35 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Key Biscayne?
Key Biscayne has a tropical monsoon climate. The warmest month is August, with an average high of 91°F (33°C), and the coldest is January, with average lows of 63°F (17°C).
It gets about 55.3 inches (1,406 mm) of precipitation a year. The wettest month is September and the driest is February.
The best time to visit Key Biscayne is December to March. At 3 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Key Biscayne
Weather in towns near Key Biscayne
Questions about the weather in Key Biscayne
What is the hottest month in Key Biscayne?
August, with an average high of 91°F (33°C).
What is the coldest month in Key Biscayne?
January, with an average low of 63°F (17°C).
How much does it rain in Key Biscayne?
About 55.3 inches (1,406 mm) a year; the wettest month is September.
Does it snow in Key Biscayne?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Key Biscayne?
December to March, when temperatures are most pleasant and rainy days are fewer.
What climate does Key Biscayne have?
Tropical monsoon (Köppen Am).
What is the weather like in Key Biscayne in November?
Highs average 83°F and lows 71°F, with about 3.5 inches of precipitation.
What time is sunrise in Key Biscayne?
Around 6:37 AM in mid-November, and sunset around 5:33 PM. Today’s exact times are shown above.
Where does this Key Biscayne weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Key Biscayne.
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