Nearby Harbors
25.6983’ N, 80.1700’ W

Key Biscayne, Biscayne Bay, FL

82°
H -°
L 80°
WSW
6mph
High tide
11:07 pm
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Key Biscayne, Biscayne Bay, FL Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sat
Sep 12 		Mostly Cloudy
Close Hourly 		-º / 80º 23% SSW 7 mph 81%
7pm Mostly Cloudy 82º 15% WSW 6 mph 76%
8pm Mostly Cloudy 82º 15% WNW 4 mph 76%
9pm Mostly Cloudy 81º 15% NW 5 mph 79%
10pm Mostly Cloudy 81º 15% NNW 5 mph 84%
11pm Partly Cloudy 81º 4% ESE 5 mph 83%
Sun
Sep 13 		PM Thunderstorms
View Hourly 		85º / 79º 55% SSW 8 mph 79%
12am Mostly Cloudy 81º 3% ENE 4 mph 82%
1am Mostly Cloudy 81º 10% ESE 4 mph 82%
2am Mostly Cloudy 82º 24% SSE 6 mph 82%
3am Cloudy 81º 7% S 6 mph 83%
4am Mostly Cloudy 82º 9% S 6 mph 83%
5am Mostly Cloudy 81º 13% SSW 5 mph 84%
6am Mostly Cloudy 82º 19% SW 3 mph 84%
7am Mostly Cloudy 81º 19% SW 3 mph 84%
8am Partly Cloudy 81º 23% WSW 3 mph 87%
9am Partly Cloudy 82º 23% WSW 3 mph 82%
10am Mostly Cloudy 83º 22% WSW 4 mph 79%
11am Few Showers 85º 31% SSW 4 mph 76%
12pm Mostly Cloudy 85º 24% SSE 5 mph 75%
1pm Partly Cloudy 84º 24% SSE 6 mph 77%
2pm Scattered Thunderstorms 84º 40% SE 7 mph 77%
3pm Mostly Cloudy 84º 24% SSE 8 mph 77%
4pm Scattered Thunderstorms 84º 37% S 8 mph 77%
5pm Scattered Thunderstorms 83º 55% SW 8 mph 79%
6pm Scattered Thunderstorms 82º 37% WSW 8 mph 81%
7pm Scattered Thunderstorms 81º 38% WNW 5 mph 82%
8pm Scattered Thunderstorms 81º 37% WNW 5 mph 84%
9pm Mostly Cloudy 81º 15% WNW 3 mph 83%
10pm Partly Cloudy 81º 15% WNW 3 mph 82%
11pm Partly Cloudy 81º 15% W 2 mph 81%
Mon
Sep 14 		PM Thunderstorms
View Hourly 		86º / 81º 37% ENE 8 mph 77%
12am Partly Cloudy 81º 6% W 2 mph 83%
1am Partly Cloudy 81º 8% WSW 3 mph 83%
2am Partly Cloudy 81º 11% WSW 3 mph 83%
3am Partly Cloudy 81º 15% WNW 3 mph 83%
4am Partly Cloudy 81º 12% WNW 2 mph 84%
5am Partly Cloudy 80º 14% NW 2 mph 85%
6am Partly Cloudy 80º 12% NW 2 mph 87%
7am Partly Cloudy 80º 10% WNW 3 mph 88%
8am Partly Cloudy 80º 15% NW 3 mph 87%
9am Partly Cloudy 82º 10% NNW 3 mph 81%
10am Partly Cloudy 84º 7% NW 3 mph 79%
11am Partly Cloudy 85º 9% NNE 4 mph 74%
12pm Partly Cloudy 86º 11% E 4 mph 71%
1pm Partly Cloudy 86º 9% ESE 6 mph 72%
2pm Partly Cloudy 86º 15% ESE 7 mph 72%
3pm Partly Cloudy 85º 15% ESE 7 mph 73%
4pm Partly Cloudy 85º 15% ESE 7 mph 73%
5pm Scattered Thunderstorms 85º 37% SE 8 mph 74%
6pm Isolated Thunderstorms 84º 33% ESE 7 mph 74%
Tue
Sep 15 		Scattered Thunderstorms 86º / 80º 50% ENE 11 mph 74%
Wed
Sep 16 		Thunderstorms 86º / 79º 73% ENE 13 mph 76%
Thu
Sep 17 		Scattered Thunderstorms 85º / 79º 44% E 11 mph 76%
Fri
Sep 18 		Scattered Thunderstorms 85º / 80º 58% ESE 9 mph 76%
Sat
Sep 19 		Scattered Thunderstorms 85º / 79º 45% ESE 7 mph 75%

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

Late Afternoon
High : 88ºF
E wind around 6 kt. A chance of showers and thunderstorms. Bay waters smooth.
Tonight
Low : 82ºF
E wind around 6 kt becoming SSE after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 5am. Bay waters smooth.
Sunday
High : 88ºF
Variable winds less than 5 kt becoming SE around 6 kt in the afternoon. Showers and thunderstorms likely, mainly between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Bay waters smooth.
Sunday Night
Low : 81ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before midnight. Bay waters smooth.
Monday
High : 88ºF
Variable winds less than 5 kt becoming E around 6 kt in the afternoon. A chance of showers and thunderstorms, mainly after 2pm. Bay waters smooth.
Monday Night
Low : 82ºF
E wind around 6 kt. A chance of showers and thunderstorms, mainly before 8pm. Bay waters smooth.
Tuesday
High : 88ºF
ENE wind 7 to 11 kt. Showers and thunderstorms likely, mainly after 2pm. Bay waters a light chop.
Tuesday Night
Low : 82ºF
E wind 11 to 13 kt. Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm after 8pm. Bay waters a moderate chop becoming a light chop.
Wednesday
High : 87ºF
E wind 11 to 13 kt. Showers and possibly a thunderstorm. Bay waters a light chop becoming 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

    SaturdaySundayMonday
    Wind Speed (MPH) 656348523347
    11pm3am7am11am3pm7pm11pm3am7am11am3pm7pm
    MPH 656348523347
    DIR WSWESESSWSSWSSEWNWWWNWWNWNNEESE

    Current Weather Conditions In Key Biscayne, Biscayne Bay, FL

    As Of: 11 minutes ago

    • 82ºF
    • 90ºF
    • 6mph
    • 0º (WSW)
    • 6mph
    • Mostly Cloudy
    • 9mi
    • 30.01"
    • 76%
    • 0ºF

    The weather right now in Key Biscayne, Biscayne Bay, FL is Mostly Cloudy. The current temperature is 82°F, and the expected high and low for today, Saturday, September 12, 2026, are -° high temperature and 80°F low temperature. The wind is currently blowing at 6 miles per hour, and coming from the West Southwest. The wind is gusting to 6 mph. With the wind and the atmosphere the temperature feels like 90° Fahrenheit. Expected precipitation is 15 percent, with current humidity at 76 percent, and air pressure at 30.01 in. Visibility is 9 nautical miles. There are no current weather alert(s).

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