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Porpoise Key, FL - Big Spanish Channel Marine Weather Forecast

Overnight - 71°F
Mar 03, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 71. East wind around 15 mph.
Tuesday - 78°F
Mar 03, 2026
15 mph E
Isolated Rain Showers then Sunny
Isolated rain showers before 7am. Sunny, with a high near 78. East wind around 15 mph.
Tuesday Night - 72°F
Mar 03, 2026
15 mph E
Partly Cloudy
Partly cloudy, with a low around 72. East wind around 15 mph.
Wednesday - 78°F
Mar 04, 2026
15 to 20 mph E
Isolated Rain Showers
Isolated rain showers after 7am. Mostly sunny, with a high near 78. East wind 15 to 20 mph.
Wednesday Night - 73°F
Mar 04, 2026
15 to 20 mph E
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 73. East wind 15 to 20 mph.
Thursday - 78°F
Mar 05, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 78. Chance of precipitation is 20%.
Thursday Night - 73°F
Mar 05, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Friday - 79°F
Mar 06, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Friday Night - 72°F
Mar 06, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Saturday - 79°F
Mar 07, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Saturday Night - 73°F
Mar 07, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Sunday - 79°F
Mar 08, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Sunday Night - 73°F
Mar 08, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Mostly clear, with a low around 73. Chance of precipitation is 20%.
Monday - 79°F
Mar 09, 2026
15 mph E
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.

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