Key Biscayne, Biscayne Bay, FL Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sun
Aug 23 		Scattered Thunderstorms
Close Hourly 		90º / 81º 51% SSE 12 mph 68%
1pm Mostly Sunny 89º 17% SE 10 mph 63%
2pm Mostly Sunny 88º 15% SSE 11 mph 65%
3pm Mostly Sunny 88º 6% SE 12 mph 67%
4pm Mostly Sunny 87º 12% SSE 12 mph 69%
5pm Scattered Thunderstorms 87º 45% SSE 11 mph 69%
6pm Scattered Thunderstorms 84º 51% SSE 10 mph 76%
7pm Isolated Thunderstorms 83º 31% SW 9 mph 75%
8pm Mostly Cloudy 82º 10% SSW 7 mph 76%
9pm Partly Cloudy 83º 3% SSW 5 mph 74%
10pm Partly Cloudy 83º 3% S 5 mph 75%
11pm Mostly Cloudy 83º 3% S 5 mph 76%
Mon
Aug 24 		AM Showers
View Hourly 		88º / 82º 37% SE 10 mph 71%
12am Partly Cloudy 83º 4% SSE 6 mph 76%
1am Partly Cloudy 84º 4% SSE 6 mph 76%
2am Partly Cloudy 84º 4% SSE 5 mph 77%
3am Mostly Cloudy 83º 7% S 5 mph 77%
4am Mostly Cloudy 83º 20% S 4 mph 78%
5am Cloudy 82º 16% SSW 2 mph 81%
6am Mostly Cloudy 82º 14% SW 2 mph 80%
7am Mostly Cloudy 82º 15% W 2 mph 81%
8am Mostly Cloudy 82º 15% NW 2 mph 82%
9am Mostly Cloudy 84º 15% ESE 3 mph 75%
10am Showers 85º 37% S 5 mph 72%
11am Showers 85º 35% SE 5 mph 72%
12pm Mostly Cloudy 87º 6% SE 6 mph 66%
1pm Mostly Cloudy 87º 4% ESE 8 mph 67%
2pm Mostly Cloudy 87º 15% SE 10 mph 67%
3pm Partly Cloudy 87º 15% ESE 9 mph 66%
4pm Partly Cloudy 87º 15% SE 10 mph 65%
5pm Partly Cloudy 87º 15% SE 9 mph 67%
6pm Partly Cloudy 86º 15% ESE 9 mph 67%
7pm Partly Cloudy 86º 15% SE 8 mph 68%
8pm Mostly Cloudy 85º 15% SE 6 mph 71%
9pm Mostly Cloudy 85º 15% SE 6 mph 72%
10pm Partly Cloudy 85º 15% SE 6 mph 72%
11pm Partly Cloudy 85º 15% SE 6 mph 73%
Tue
Aug 25 		Partly Cloudy
View Hourly 		88º / 81º 24% ESE 11 mph 71%
12am Partly Cloudy 85º 9% ESE 5 mph 74%
1am Partly Cloudy 84º 9% ESE 5 mph 74%
2am Partly Cloudy 84º 4% ESE 4 mph 75%
3am Partly Cloudy 84º 4% ESE 4 mph 76%
4am Partly Cloudy 84º 4% ESE 3 mph 76%
5am Partly Cloudy 83º 9% E 3 mph 77%
6am Partly Cloudy 83º 9% E 3 mph 77%
7am Partly Cloudy 83º 11% E 3 mph 78%
8am Partly Cloudy 83º 15% E 3 mph 79%
9am Partly Cloudy 85º 24% E 5 mph 75%
10am Partly Cloudy 86º 21% ESE 6 mph 70%
11am Partly Cloudy 87º 7% SE 6 mph 68%
12pm Partly Cloudy 87º 9% ESE 7 mph 67%
Wed
Aug 26 		Scattered Thunderstorms 87º / 81º 47% SE 10 mph 74%
Thu
Aug 27 		AM Thunderstorms 87º / 82º 38% SE 10 mph 73%
Fri
Aug 28 		Scattered Thunderstorms 88º / 82º 56% ESE 10 mph 73%
Sat
Aug 29 		Scattered Thunderstorms 88º / 82º 44% E 11 mph 74%
Sun
Aug 30 		Scattered Thunderstorms 87º / 81º 47% E 11 mph 74%

Weather Radar for Key Biscayne, Biscayne Bay, FL See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Key Biscayne, Biscayne Bay, FL

Today
High : 89ºF
SSE wind 5 to 9 kt. A chance of showers and thunderstorms, mainly after 2pm. Bay waters smooth becoming a light chop.
Tonight
Low : 83ºF
SSE wind 6 to 8 kt. A chance of showers and thunderstorms, mainly before 8pm. Bay waters smooth.
Monday
High : 89ºF
Variable winds less than 5 kt becoming SE 5 to 8 kt in the afternoon. Mostly sunny. Bay waters smooth becoming a light chop.
Monday Night
Low : 84ºF
ESE wind 6 to 8 kt. Mostly clear. Bay waters a light chop becoming smooth.
Tuesday
High : 89ºF
ESE wind 6 to 9 kt. A slight chance of showers and thunderstorms. Bay waters smooth becoming a light chop.
Tuesday Night
Low : 83ºF
ESE wind around 10 kt. A chance of showers and thunderstorms. Bay waters a light chop.
Wednesday
High : 88ºF
SE wind around 8 kt. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Bay waters a light chop.
Wednesday Night
Low : 84ºF
ESE wind 9 to 11 kt. A chance of showers and thunderstorms, mainly before 8pm. Bay waters a light chop.
Thursday
High : 89ºF
SE wind around 8 kt. A chance of showers and thunderstorms. Bay waters smooth becoming a light chop.

NOAA Buoy Data Near Key Biscayne, Biscayne Bay, FL See Map

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    Wind Speed Forecast for Key Biscayne, Biscayne Bay, FL

    SundayMondayTuesday
    Wind Speed (MPH) 10115623896535
    5pm9pm1am5am9am1pm5pm9pm1am5am9am1pm
    MPH 10115623896535
    DIR SESSESSWSSESSWESEESESESEESEEE

    Current Weather Conditions In Key Biscayne, Biscayne Bay, FL

    As Of: 5 minutes ago

    • 89ºF
    • 100ºF
    • 10mph
    • 0º (SE)
    • 10mph
    • Mostly Sunny
    • 10mi
    • 30.03"
    • 63%
    • 0ºF

    The weather right now in Key Biscayne, Biscayne Bay, FL is Mostly Sunny. The current temperature is 89°F, and the expected high and low for today, Sunday, August 23, 2026, are 90° high temperature and 81°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the Southeast. The wind is gusting to 10 mph. With the wind and the atmosphere the temperature feels like 100° Fahrenheit. Expected precipitation is 17 percent, with current humidity at 63 percent, and air pressure at 30.03 in. Visibility is 10 nautical miles. There are no current weather alert(s).