Nearby Harbors
24.7183’ N, 81.3517’ W

Porpoise Key, Big Spanish Channel, FL

83°
H 86°
L 80°
SSW
7mph
High tide
11:37 am
Photo Credits

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

Day Sky High / Low Precip Wind Humidity
Wed
Sep 23 		Scattered Thunderstorms
Close Hourly 		86º / 80º 95% WSW 7 mph 78%
11am Cloudy 83º 22% SSW 7 mph 79%
12pm Scattered Thunderstorms 82º 57% SW 6 mph 78%
1pm Heavy Thunderstorms 82º 94% WSW 6 mph 82%
2pm Scattered Thunderstorms 82º 58% WSW 6 mph 80%
3pm Scattered Thunderstorms 83º 58% WSW 6 mph 79%
4pm Isolated Thunderstorms 85º 31% W 7 mph 74%
5pm Mostly Cloudy 85º 15% W 6 mph 73%
6pm Mostly Cloudy 85º 15% NW 5 mph 74%
7pm Mostly Cloudy 83º 24% NW 4 mph 76%
8pm Mostly Cloudy 82º 15% NNW 3 mph 80%
9pm Mostly Cloudy 82º 8% NNW 2 mph 81%
10pm Mostly Cloudy 81º 8% NNW 2 mph 82%
11pm Cloudy 81º 9% NNW 2 mph 82%
Thu
Sep 24 		Cloudy
View Hourly 		87º / 80º 23% NNW 7 mph 74%
12am Mostly Cloudy 81º 8% NW 1 mph 83%
1am Mostly Cloudy 81º 8% W 2 mph 85%
2am Mostly Cloudy 81º 11% WSW 2 mph 84%
3am Mostly Cloudy 81º 11% NW 3 mph 84%
4am Cloudy 81º 12% NW 3 mph 83%
5am Mostly Cloudy 81º 11% NNW 3 mph 84%
6am Mostly Cloudy 81º 8% NNW 3 mph 84%
7am Mostly Cloudy 81º 11% NW 3 mph 84%
8am Mostly Cloudy 82º 24% NNW 4 mph 83%
9am Cloudy 83º 19% NNW 4 mph 79%
10am Cloudy 84º 12% NNW 5 mph 75%
11am Cloudy 85º 14% N 6 mph 74%
12pm Cloudy 86º 16% NNE 6 mph 72%
1pm Cloudy 86º 9% N 6 mph 71%
2pm Cloudy 86º 7% N 7 mph 71%
3pm Cloudy 87º 6% N 7 mph 70%
4pm Mostly Cloudy 87º 5% NNW 7 mph 68%
5pm Mostly Cloudy 87º 3% NW 7 mph 68%
6pm Mostly Cloudy 86º 3% NW 6 mph 69%
7pm Mostly Cloudy 85º 3% NNW 5 mph 70%
8pm Mostly Cloudy 84º 7% NW 5 mph 73%
9pm Mostly Cloudy 84º 5% NNW 4 mph 75%
10pm Cloudy 84º 12% NNW 5 mph 76%
11pm Mostly Cloudy 83º 8% NNW 5 mph 77%
Fri
Sep 25 		Partly Cloudy
View Hourly 		87º / 79º 17% NNE 11 mph 73%
12am Mostly Cloudy 83º 9% NNW 4 mph 78%
1am Mostly Cloudy 83º 19% N 5 mph 80%
2am Mostly Cloudy 83º 17% N 5 mph 79%
3am Mostly Cloudy 82º 24% NNE 6 mph 80%
4am Mostly Cloudy 82º 14% NNE 7 mph 81%
5am Mostly Cloudy 82º 11% NNE 7 mph 82%
6am Partly Cloudy 81º 14% NNE 9 mph 83%
7am Partly Cloudy 81º 14% NNE 10 mph 85%
8am Partly Cloudy 81º 18% NNE 10 mph 84%
9am Partly Cloudy 83º 15% NNE 10 mph 79%
10am Partly Cloudy 83º 17% NNE 11 mph 77%
Sat
Sep 26 		Partly Cloudy 86º / 79º 16% NNE 10 mph 71%
Sun
Sep 27 		Partly Cloudy 85º / 80º 15% N 7 mph 67%
Mon
Sep 28 		Showers 85º / 79º 39% S 6 mph 68%
Tue
Sep 29 		Thunderstorms 84º / 79º 68% S 6 mph 73%
Wed
Sep 30 		Scattered Thunderstorms 85º / 81º 54% SE 10 mph 74%

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 : 88ºF
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.
Tonight
Low : 80ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.
Thursday
High : 88ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.
Thursday Night
Low : 79ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.
Friday
High : 88ºF
NNE wind 5 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Friday Night
Low : 79ºF
N wind 5 to 10 kt becoming NE after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.
Saturday
High : 88ºF
NE wind 5 to 10 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Saturday Night
Low : 77ºF
Variable winds 5 kt or less. A slight chance of showers. Seas 1 ft or less.
Sunday
High : 87ºF
NE wind 5 to 10 kt. A chance of showers. 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

    WednesdayThursdayFriday
    Wind Speed (MPH) 7642336755610
    3pm7pm11pm3am7am11am3pm7pm11pm3am7am11am
    MPH 7642336755610
    DIR SSWWSWNWNNWNWNWNNNNWNNWNNENNE

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

    As Of: 28 seconds ago

    • 83ºF
    • 91ºF
    • 7mph
    • 0º (SSW)
    • 7mph
    • Cloudy
    • 10mi
    • 29.96"
    • 79%
    • 0ºF

    The weather right now in Porpoise Key, Big Spanish Channel, FL is Cloudy. The current temperature is 83°F, and the expected high and low for today, Wednesday, September 23, 2026, are 86° high temperature and 80°F low temperature. The wind is currently blowing at 7 miles per hour, and coming from the South Southwest. The wind is gusting to 7 mph. With the wind and the atmosphere the temperature feels like 91° Fahrenheit. Expected precipitation is 22 percent, with current humidity at 79 percent, and air pressure at 29.96 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Coastal Flood Statement - 2:17am Wed Sep 23 2026

    ...COASTAL FLOOD STATEMENT REMAINS IN EFFECT THROUGH THIS AFTERNOON...

    WHAT: Minor saltwater flooding.

    WHERE: Florida Keys.

    WHEN: Through this afternoon.

    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.

    &&

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