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

Day Sky High / Low Precip Wind Humidity
Sun
Aug 2 		Mostly Cloudy
Close Hourly 		-º / 81º 13% ESE 9 mph 80%
9pm Mostly Cloudy 84º 12% ENE 5 mph 77%
10pm Mostly Cloudy 83º 7% ENE 5 mph 77%
11pm Mostly Cloudy 84º 5% ENE 5 mph 75%
Mon
Aug 3 		PM Thunderstorms
View Hourly 		88º / 80º 56% S 11 mph 75%
12am Cloudy 83º 4% ESE 5 mph 78%
1am Cloudy 83º 6% ESE 5 mph 79%
2am Cloudy 82º 6% SE 7 mph 84%
3am Mostly Cloudy 82º 6% SE 8 mph 84%
4am Mostly Cloudy 82º 7% SSE 9 mph 83%
5am Mostly Cloudy 83º 7% SSE 8 mph 83%
6am Mostly Cloudy 83º 7% SSE 8 mph 81%
7am Cloudy 83º 7% S 8 mph 83%
8am Mostly Cloudy 83º 10% S 7 mph 82%
9am Mostly Cloudy 84º 11% S 8 mph 79%
10am Mostly Cloudy 86º 24% S 9 mph 74%
11am Cloudy 86º 17% SSW 8 mph 72%
12pm Cloudy 87º 7% S 8 mph 70%
1pm Cloudy 87º 11% S 9 mph 71%
2pm Cloudy 86º 14% SSE 10 mph 72%
3pm Mostly Cloudy 87º 21% SSE 11 mph 70%
4pm Scattered Thunderstorms 87º 55% SSE 11 mph 69%
5pm Scattered Thunderstorms 85º 52% S 11 mph 74%
6pm Scattered Thunderstorms 83º 56% SSW 9 mph 79%
7pm Isolated Thunderstorms 82º 32% SW 8 mph 81%
8pm Cloudy 81º 24% SSW 6 mph 83%
9pm Mostly Cloudy 81º 17% SSW 4 mph 82%
10pm Mostly Cloudy 82º 24% S 5 mph 83%
11pm Showers 82º 41% S 6 mph 81%
Tue
Aug 4 		PM Thunderstorms
View Hourly 		87º / 80º 63% SSE 9 mph 75%
12am Showers 82º 42% S 6 mph 79%
1am Showers 81º 46% SSW 6 mph 83%
2am Showers 81º 44% SSW 6 mph 84%
3am Cloudy 81º 24% SSW 6 mph 83%
4am Cloudy 81º 20% SSW 6 mph 83%
5am Mostly Cloudy 81º 12% SSW 5 mph 82%
6am Cloudy 82º 10% SSW 5 mph 83%
7am Cloudy 82º 8% SSW 5 mph 83%
8am Mostly Cloudy 82º 9% SSW 5 mph 84%
9am Mostly Cloudy 84º 8% SSW 6 mph 79%
10am Mostly Cloudy 85º 7% SSW 6 mph 76%
11am Mostly Cloudy 86º 12% SSW 6 mph 71%
12pm Mostly Cloudy 87º 24% S 6 mph 69%
1pm Isolated Thunderstorms 87º 33% SSE 7 mph 70%
2pm Thunderstorms 86º 63% SSE 9 mph 71%
3pm Scattered Thunderstorms 85º 59% SE 8 mph 72%
4pm Isolated Thunderstorms 84º 33% SE 8 mph 74%
5pm Mostly Cloudy 84º 24% ESE 7 mph 74%
6pm Partly Cloudy 83º 24% ESE 6 mph 76%
7pm Mostly Cloudy 83º 24% NE 6 mph 77%
8pm Mostly Cloudy 81º 19% N 5 mph 77%
Wed
Aug 5 		AM Thunderstorms 86º / 81º 54% E 10 mph 76%
Thu
Aug 6 		Scattered Thunderstorms 86º / 81º 61% E 13 mph 75%
Fri
Aug 7 		Thunderstorms 86º / 82º 61% E 12 mph 76%
Sat
Aug 8 		Scattered Thunderstorms 87º / 82º 62% ESE 12 mph 74%
Sun
Aug 9 		AM Thunderstorms 87º / 82º 53% ESE 12 mph 73%

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

Tonight
Low : 83ºF
ENE wind 5 to 10 kt becoming SE after midnight. A slight chance of showers and thunderstorms before 11pm. Bay waters smooth becoming a light chop.
Monday
High : 89ºF
S wind 6 to 9 kt. Showers and thunderstorms likely, mainly after 5pm. Bay waters smooth becoming a light chop.
Monday Night
Low : 82ºF
S wind around 8 kt. Showers and thunderstorms likely, mainly before midnight. Bay waters smooth.
Tuesday
High : 88ºF
Variable winds less than 5 kt becoming SE 5 to 7 kt in the afternoon. Showers and thunderstorms likely, mainly after 2pm. Bay waters smooth.
Tuesday Night
Low : 82ºF
ESE wind 5 to 9 kt. Showers and thunderstorms likely, mainly before 8pm. Bay waters smooth becoming a light chop.
Wednesday
High : 87ºF
ESE wind around 10 kt. Showers and thunderstorms likely, mainly before 2pm. Bay waters a light chop.
Wednesday Night
Low : 83ºF
E wind 12 to 16 kt. A chance of showers and thunderstorms. Bay waters a moderate chop.
Thursday
High : 87ºF
E wind around 14 kt. Showers likely and possibly a thunderstorm, then showers and thunderstorms after 2pm. Bay waters a moderate chop.
Thursday Night
Low : 82ºF
E wind around 16 kt. Showers and thunderstorms, mainly before 2am. Bay waters a moderate 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

    MondayTuesday
    Wind Speed (MPH) 5588911465677
    1am5am9am1pm5pm9pm1am5am9am1pm5pm9pm
    MPH 5588911465677
    DIR ENEESESSESSSSSWSSWSSWSSWSSEESE

    Current Weather Conditions In Key Biscayne, Biscayne Bay, FL

    As Of: 19 minutes ago

    • 84ºF
    • 93ºF
    • 5mph
    • 0º (ENE)
    • 5mph
    • Mostly Cloudy
    • 10mi
    • 29.96"
    • 77%
    • 0ºF

    The weather right now in Key Biscayne, Biscayne Bay, FL is Mostly Cloudy. The current temperature is 84°F, and the expected high and low for today, Sunday, August 2, 2026, are -° high temperature and 81°F low temperature. The wind is currently blowing at 5 miles per hour, and coming from the East Northeast. The wind is gusting to 5 mph. With the wind and the atmosphere the temperature feels like 93° Fahrenheit. Expected precipitation is 12 percent, with current humidity at 77 percent, and air pressure at 29.96 in. Visibility is 10 nautical miles. There are no current weather alert(s).