Nearby Harbors
25.6983’ N, 80.1700’ W

Key Biscayne, Biscayne Bay, FL

75°
H 79°
L 76°
NNE
10mph
Low tide
3:46 pm
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Key Biscayne, Biscayne Bay, FL Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sun
Oct 25 		Thundershowers/Wind
Close Hourly 		79º / 76º 100% NNE 23 mph 78%
9am Partly Cloudy 75º 22% NNE 10 mph 81%
10am Partly Cloudy 78º 24% NNE 12 mph 77%
11am Light Rain 78º 75% NNE 13 mph 76%
12pm Heavy Thunderstorms 79º 100% NNE 17 mph 74%
1pm Light Rain 79º 77% NE 18 mph 77%
2pm Partly Cloudy/Wind 79º 19% NE 20 mph 76%
3pm Light Rain/Wind 79º 63% NE 20 mph 76%
4pm Scattered Thunderstorms/Wind 78º 58% NE 21 mph 77%
5pm Thunderstorms/Wind 78º 89% NE 22 mph 78%
6pm Thunderstorms/Wind 78º 62% NE 23 mph 77%
7pm Rain/Wind 78º 62% NE 21 mph 79%
8pm Few Showers/Wind 77º 34% NE 20 mph 78%
9pm Showers/Wind 77º 42% NE 20 mph 79%
10pm Showers/Wind 77º 49% NE 20 mph 79%
11pm Showers/Wind 77º 49% NE 20 mph 79%
Mon
Oct 26 		Showers/Wind
View Hourly 		81º / 77º 48% NE 26 mph 73%
12am Showers/Wind 77º 38% NE 20 mph 79%
1am Few Showers/Wind 78º 30% NE 20 mph 78%
2am Partly Cloudy/Wind 78º 24% NE 22 mph 78%
3am Few Showers/Wind 78º 34% NE 21 mph 77%
4am Showers/Wind 77º 37% NE 21 mph 80%
5am Showers/Wind 78º 49% NE 22 mph 79%
6am Showers/Wind 78º 56% NE 20 mph 79%
7am Showers/Wind 78º 41% NE 22 mph 77%
8am Partly Cloudy/Wind 78º 24% NE 23 mph 78%
9am Showers/Wind 79º 37% NE 22 mph 75%
10am Partly Cloudy/Wind 79º 24% NE 24 mph 74%
11am Showers/Wind 80º 40% NE 24 mph 72%
12pm Showers/Wind 80º 43% NE 26 mph 71%
1pm Showers/Wind 80º 41% NE 26 mph 70%
2pm Showers/Wind 80º 43% NE 25 mph 72%
3pm Showers/Wind 80º 49% NE 25 mph 72%
4pm Showers/Wind 80º 44% NE 25 mph 71%
5pm Showers/Wind 80º 43% NE 24 mph 70%
6pm Showers/Wind 80º 39% NE 23 mph 71%
7pm Showers/Wind 79º 36% NE 23 mph 73%
8pm Mostly Cloudy/Wind 79º 24% NE 22 mph 74%
9pm Showers/Wind 78º 41% NE 22 mph 75%
10pm Showers/Wind 78º 38% NE 22 mph 74%
11pm Partly Cloudy/Wind 78º 20% NE 21 mph 75%
Tue
Oct 27 		Rain/Wind
View Hourly 		82º / 77º 72% NE 24 mph 74%
12am Partly Cloudy/Wind 79º 23% NE 21 mph 74%
1am Partly Cloudy/Wind 79º 20% NNE 22 mph 74%
2am Mostly Cloudy/Wind 79º 24% NNE 22 mph 75%
3am Mostly Cloudy/Wind 78º 24% NNE 22 mph 76%
4am Few Showers 78º 34% NNE 19 mph 77%
5am Showers/Wind 78º 43% NNE 20 mph 77%
6am Showers 78º 44% NNE 19 mph 77%
7am Showers/Wind 78º 41% NNE 20 mph 76%
8am Showers/Wind 78º 40% NNE 20 mph 77%
Wed
Oct 28 		Light Rain 82º / 77º 71% NE 15 mph 77%
Thu
Oct 29 		Scattered Thunderstorms 83º / 77º 55% ENE 11 mph 76%
Fri
Oct 30 		AM Showers 83º / 78º 42% NE 12 mph 76%
Sat
Oct 31 		Showers 83º / 78º 44% ENE 14 mph 75%
Sun
Nov 1 		Scattered Thunderstorms 83º / 76º 41% ENE 12 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

Today
High : 83ºF
NNE wind 14 to 22 kt. Showers and possibly a thunderstorm. Bay waters a light chop becoming a moderate chop.
Tonight
Low : 77ºF
NE wind 22 to 24 kt. Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Bay waters rough in exposed areas.
Monday
High : 82ºF
NE wind around 27 kt, with gusts as high as 34 kt. Showers and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 10am, then showers likely and possibly a thunderstorm after 10am. Bay waters rough in exposed areas.
Monday Night
Low : 77ºF
NE wind 24 to 26 kt. Showers and possibly a thunderstorm. Bay waters rough in exposed areas.
Tuesday
High : 83ºF
NE wind around 24 kt. Showers and possibly a thunderstorm. Bay waters rough in exposed areas.
Tuesday Night
Low : 78ºF
NE wind around 23 kt. Showers likely, mainly before 2am. Bay waters rough in exposed areas.
Wednesday
High : 84ºF
ENE wind 18 to 20 kt. Showers likely, mainly after 8am. Bay waters choppy in exposed areas.
Wednesday Night
Low : 78ºF
ENE wind 13 to 17 kt. A chance of showers and thunderstorms. Bay waters a moderate chop.
Thursday
High : 84ºF
ENE wind around 9 kt. A chance of showers, with thunderstorms also possible after 2pm. Bay waters 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) 101822202022222624222220
    1pm5pm9pm1am5am9am1pm5pm9pm1am5am9am
    MPH 101822202022222624222220
    DIR NNENENENENENENENENENENNENNE

    Current Weather Conditions In Key Biscayne, Biscayne Bay, FL

    As Of: 28 minutes ago

    • 75ºF
    • 75ºF
    • 10mph
    • 0º (NNE)
    • 10mph
    • Partly Cloudy
    • 10mi
    • 29.97"
    • 81%
    • 0ºF

    The weather right now in Key Biscayne, Biscayne Bay, FL is Partly Cloudy. The current temperature is 75°F, and the expected high and low for today, Sunday, October 25, 2026, are 79° high temperature and 76°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the North Northeast. The wind is gusting to 10 mph. With the wind and the atmosphere the temperature feels like 75° Fahrenheit. Expected precipitation is 22 percent, with current humidity at 81 percent, and air pressure at 29.97 in. Visibility is 10 nautical miles. There are 6 current weather alert(s).

    Weather Alerts
    Coastal Flood Warning - 7:43am Sun Oct 25 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TUESDAY NIGHT... ...COASTAL FLOOD WARNING IN EFFECT FROM 2 AM MONDAY TO 8 PM EDT TUESDAY...

    WHAT: Moderate coastal flooding around periods of high tide,
    reaching major flood stage on Monday and Tuesday. Life
    threatening rip currents are expected.

    WHERE: Coastal Broward County and Coastal Miami Dade County.

    WHEN: For the Coastal Flood Advisory, until 2 AM EDT Monday.
    For the Coastal Flood Warning, from 2 AM Monday to 8 PM EDT
    Tuesday. Coastal Flood Advisories will then be necessary through
    much of next week after the peak of King Tides. For the High
    Rip Current Risk, through late Tuesday night.

    IMPACTS: Numerous roads may be closed. Low lying property
    including homes, businesses, and some critical infrastructure
    will be inundated. Some shoreline erosion will occur. Rip
    currents can sweep even the best swimmers away from shore into
    deeper water.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Take the necessary actions to protect flood-prone property. If
    travel is required, do not drive around barricades or through
    water of unknown depth.

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

    Gale Warning - 7:57am Sun Oct 25 2026

    ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 8 PM EDT TUESDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM TUESDAY TO 2 AM EDT WEDNESDAY...

    WHAT: Northeast winds 20 to 25 knots with gusts up to 20 knots.
    Seas 1 to 2 ft. Starting tonight, frequent gusts to Gale force
    are expected and are forecast to continue through Tuesday. Gale
    conditions should subside to Advisory levels once again by
    Tuesday night.

    WHERE: Biscayne Bay.

    WHEN: Small Craft Advisory, until 8 PM EDT this evening, then a
    Gale Warning, from 8 PM this evening to 8 PM EDT Tuesday. A
    Small Craft Advisory will then replace the Gale Warning from
    midweek onward.

    IMPACTS: Strong winds will cause hazardous seas which could
    capsize or damage vessels and reduce visibility.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Mariners should alter plans to avoid these hazardous conditions.
    Remain in port, seek safe harbor, alter course, and/or secure the
    vessel for hazardous conditions.

    &&

    Rip Current Statement - 7:43am Sun Oct 25 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TUESDAY NIGHT... ...COASTAL FLOOD WARNING IN EFFECT FROM 2 AM MONDAY TO 8 PM EDT TUESDAY...

    WHAT: Moderate coastal flooding around periods of high tide,
    reaching major flood stage on Monday and Tuesday. Life
    threatening rip currents are expected.

    WHERE: Coastal Broward County and Coastal Miami Dade County.

    WHEN: For the Coastal Flood Advisory, until 2 AM EDT Monday.
    For the Coastal Flood Warning, from 2 AM Monday to 8 PM EDT
    Tuesday. Coastal Flood Advisories will then be necessary through
    much of next week after the peak of King Tides. For the High
    Rip Current Risk, through late Tuesday night.

    IMPACTS: Numerous roads may be closed. Low lying property
    including homes, businesses, and some critical infrastructure
    will be inundated. Some shoreline erosion will occur. Rip
    currents can sweep even the best swimmers away from shore into
    deeper water.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Take the necessary actions to protect flood-prone property. If
    travel is required, do not drive around barricades or through
    water of unknown depth.

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

    Small Craft Advisory - 7:57am Sun Oct 25 2026

    ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 8 PM EDT TUESDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM TUESDAY TO 2 AM EDT WEDNESDAY...

    WHAT: Northeast winds 20 to 25 knots with gusts up to 20 knots.
    Seas 1 to 2 ft. Starting tonight, frequent gusts to Gale force
    are expected and are forecast to continue through Tuesday. Gale
    conditions should subside to Advisory levels once again by
    Tuesday night.

    WHERE: Biscayne Bay.

    WHEN: Small Craft Advisory, until 8 PM EDT this evening, then a
    Gale Warning, from 8 PM this evening to 8 PM EDT Tuesday. A
    Small Craft Advisory will then replace the Gale Warning from
    midweek onward.

    IMPACTS: Strong winds will cause hazardous seas which could
    capsize or damage vessels and reduce visibility.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Mariners should alter plans to avoid these hazardous conditions.
    Remain in port, seek safe harbor, alter course, and/or secure the
    vessel for hazardous conditions.

    &&

    Small Craft Advisory - 7:57am Sun Oct 25 2026

    ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 8 PM EDT TUESDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM TUESDAY TO 2 AM EDT WEDNESDAY...

    WHAT: Northeast winds 20 to 25 knots with gusts up to 20 knots.
    Seas 1 to 2 ft. Starting tonight, frequent gusts to Gale force
    are expected and are forecast to continue through Tuesday. Gale
    conditions should subside to Advisory levels once again by
    Tuesday night.

    WHERE: Biscayne Bay.

    WHEN: Small Craft Advisory, until 8 PM EDT this evening, then a
    Gale Warning, from 8 PM this evening to 8 PM EDT Tuesday. A
    Small Craft Advisory will then replace the Gale Warning from
    midweek onward.

    IMPACTS: Strong winds will cause hazardous seas which could
    capsize or damage vessels and reduce visibility.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Mariners should alter plans to avoid these hazardous conditions.
    Remain in port, seek safe harbor, alter course, and/or secure the
    vessel for hazardous conditions.

    &&

    Coastal Flood Advisory - 7:43am Sun Oct 25 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH LATE TUESDAY NIGHT... ...COASTAL FLOOD WARNING IN EFFECT FROM 2 AM MONDAY TO 8 PM EDT TUESDAY...

    WHAT: Moderate coastal flooding around periods of high tide,
    reaching major flood stage on Monday and Tuesday. Life
    threatening rip currents are expected.

    WHERE: Coastal Broward County and Coastal Miami Dade County.

    WHEN: For the Coastal Flood Advisory, until 2 AM EDT Monday.
    For the Coastal Flood Warning, from 2 AM Monday to 8 PM EDT
    Tuesday. Coastal Flood Advisories will then be necessary through
    much of next week after the peak of King Tides. For the High
    Rip Current Risk, through late Tuesday night.

    IMPACTS: Numerous roads may be closed. Low lying property
    including homes, businesses, and some critical infrastructure
    will be inundated. Some shoreline erosion will occur. Rip
    currents can sweep even the best swimmers away from shore into
    deeper water.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Take the necessary actions to protect flood-prone property. If
    travel is required, do not drive around barricades or through
    water of unknown depth.

    Swim near a lifeguard. If caught in a rip current, relax and
    float. Don't swim against the current. If able, swim in a
    direction following the shoreline. If unable to escape, face the
    shore and call or wave for help.

    &&

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