Porpoise Key, Big Spanish Channel, FL Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Thu
Aug 13 		Partly Cloudy
Close Hourly 		90º / 83º 15% ESE 5 mph 67%
7am Partly Cloudy 84º 2% SSE 4 mph 75%
8am Mostly Cloudy 86º 2% SSE 4 mph 71%
9am Mostly Cloudy 88º 3% SSE 4 mph 67%
10am Mostly Cloudy 88º 5% SE 4 mph 66%
11am Mostly Cloudy 89º 5% SE 4 mph 65%
12pm Partly Cloudy 89º 2% ESE 5 mph 64%
1pm Partly Cloudy 89º 5% ESE 5 mph 64%
2pm Partly Cloudy 90º 15% E 4 mph 63%
3pm Partly Cloudy 90º 15% E 4 mph 62%
4pm Partly Cloudy 90º 15% ENE 4 mph 61%
5pm Partly Cloudy 90º 15% ENE 4 mph 61%
6pm Partly Cloudy 90º 4% ENE 5 mph 63%
7pm Partly Cloudy 88º 3% ENE 5 mph 66%
8pm Partly Cloudy 87º 5% ENE 5 mph 69%
9pm Partly Cloudy 86º 8% ENE 5 mph 72%
10pm Partly Cloudy 86º 3% ENE 5 mph 72%
11pm Partly Cloudy 86º 3% E 6 mph 73%
Fri
Aug 14 		Partly Cloudy
View Hourly 		91º / 83º 19% E 12 mph 67%
12am Partly Cloudy 85º 3% E 7 mph 73%
1am Partly Cloudy 85º 3% E 7 mph 73%
2am Partly Cloudy 85º 3% ESE 8 mph 73%
3am Partly Cloudy 85º 3% ESE 7 mph 73%
4am Partly Cloudy 85º 3% ESE 7 mph 74%
5am Partly Cloudy 85º 3% ESE 7 mph 74%
6am Partly Cloudy 84º 3% ESE 7 mph 75%
7am Partly Cloudy 84º 3% ESE 7 mph 75%
8am Partly Cloudy 86º 4% ESE 7 mph 72%
9am Partly Cloudy 87º 3% ESE 9 mph 68%
10am Partly Cloudy 88º 6% ESE 9 mph 67%
11am Partly Cloudy 89º 4% ESE 10 mph 65%
12pm Partly Cloudy 89º 3% E 10 mph 65%
1pm Partly Cloudy 90º 10% E 10 mph 64%
2pm Partly Cloudy 90º 20% E 10 mph 65%
3pm Mostly Cloudy 90º 15% E 11 mph 64%
4pm Partly Cloudy 89º 15% E 11 mph 65%
5pm Mostly Cloudy 89º 15% E 12 mph 66%
6pm Partly Cloudy 88º 15% E 12 mph 69%
7pm Mostly Cloudy 87º 16% E 12 mph 70%
8pm Mostly Cloudy 85º 17% E 12 mph 75%
9pm Partly Cloudy 85º 17% E 12 mph 78%
10pm Partly Cloudy 85º 15% E 12 mph 78%
11pm Partly Cloudy 84º 24% E 12 mph 79%
Sat
Aug 15 		Partly Cloudy
View Hourly 		90º / 84º 19% ESE 11 mph 69%
12am Mostly Cloudy 84º 17% E 12 mph 79%
1am Mostly Cloudy 84º 18% ESE 12 mph 79%
2am Partly Cloudy 84º 12% ESE 11 mph 82%
3am Mostly Cloudy 84º 20% ESE 10 mph 82%
4am Partly Cloudy 84º 17% ESE 9 mph 82%
5am Partly Cloudy 84º 20% ESE 10 mph 83%
6am Partly Cloudy 84º 18% ESE 10 mph 81%
Sun
Aug 16 		Partly Cloudy 90º / 83º 4% E 11 mph 68%
Mon
Aug 17 		Mostly Sunny 90º / 83º 15% E 7 mph 69%
Tue
Aug 18 		Partly Cloudy 89º / 83º 15% ESE 5 mph 68%
Wed
Aug 19 		Partly Cloudy 89º / 83º 15% SE 5 mph 68%
Thu
Aug 20 		Partly Cloudy 89º / 83º 16% ESE 5 mph 70%

Weather Radar for Porpoise Key, Big Spanish Channel, FL See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Porpoise Key, Big Spanish Channel, FL

Today
High : 90ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Tonight
Low : 83ºF
ESE wind 5 to 10 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Friday
High : 91ºF
E wind 10 to 15 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Friday Night
Low : 83ºF
E wind 10 to 15 kt. A chance of showers and thunderstorms. Seas around 1 ft.
Saturday
High : 90ºF
ESE wind around 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Saturday Night
Low : 83ºF
ESE wind around 15 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.
Sunday
High : 91ºF
E wind around 10 kt. Sunny. Seas 1 ft or less.
Sunday Night
Low : 83ºF
E wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.
Monday
High : 91ºF
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

NOAA Buoy Data Near Porpoise Key, Big Spanish Channel, FL See Map

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    Wind Speed Forecast for Porpoise Key, Big Spanish Channel, FL

    ThursdayFridaySaturday
    Wind Speed (MPH) 44456771011121210
    11am3pm7pm11pm3am7am11am3pm7pm11pm3am7am
    MPH 44456771011121210
    DIR SSESEEENEEESEESEESEEEEESE

    Current Weather Conditions In Porpoise Key, Big Spanish Channel, FL

    As Of: 44 minutes ago

    • 84ºF
    • 94ºF
    • 4mph
    • 0º (SSE)
    • 4mph
    • Partly Cloudy
    • 10mi
    • 30.01"
    • 75%
    • 0ºF

    The weather right now in Porpoise Key, Big Spanish Channel, FL is Partly Cloudy. The current temperature is 84°F, and the expected high and low for today, Thursday, August 13, 2026, are 90° high temperature and 83°F low temperature. The wind is currently blowing at 4 miles per hour, and coming from the South Southeast. The wind is gusting to 4 mph. With the wind and the atmosphere the temperature feels like 94° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 75 percent, and air pressure at 30.01 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Coastal Flood Statement - 4:00am Thu Aug 13 2026

    ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT...

    WHAT: Minor saltwater flooding.

    WHERE: Lower and Middle Florida Keys.

    WHEN: Through Thursday afternoon, especially around the times
    of high tide in the late morning and early afternoon hours.

    IMPACTS: Minor saltwater flooding of low elevation streets
    and lots is likely. Some storm drains will overflow, and some
    seawalls and docks will be overtopped. Boaters can expect less
    clearance under fixed bridges. Motorists should remember that
    persistent puddles around the times of high tide are almost
    certain to contain a mix of saltwater.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Do not drive through flooded roadways.

    &&