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Key Biscayne, FL Marine Weather Forecast

This Afternoon - 79°F
Dec 29, 2025
6 to 10 mph S
Sunny
Sunny, with a high near 79. South wind 6 to 10 mph.
Tonight - 67°F
Dec 29, 2025
13 mph W
Mostly Clear
Mostly clear, with a low around 67. West wind around 13 mph.
Tuesday - 73°F
Dec 30, 2025
13 to 16 mph NW
Mostly Sunny
Mostly sunny. High near 73, with temperatures falling to around 69 in the afternoon. Northwest wind 13 to 16 mph.
Tuesday Night - 55°F
Dec 30, 2025
17 to 21 mph N
Mostly Clear
Mostly clear, with a low around 55. North wind 17 to 21 mph.
Wednesday - 68°F
Dec 31, 2025
12 to 21 mph NW
Sunny
Sunny, with a high near 68. Northwest wind 12 to 21 mph.
Wednesday Night - 53°F
Dec 31, 2025
13 to 16 mph NW
Mostly Clear
Mostly clear, with a low around 53. Northwest wind 13 to 16 mph.
New Year's Day - 70°F
Jan 01, 2026
9 to 15 mph NW
Sunny
Sunny, with a high near 70. Northwest wind 9 to 15 mph.
Thursday Night - 58°F
Jan 01, 2026
9 mph NW
Clear
Clear, with a low around 58. Northwest wind around 9 mph.
Friday - 72°F
Jan 02, 2026
3 to 7 mph NE
Sunny
Sunny, with a high near 72. Northeast wind 3 to 7 mph.
Friday Night - 62°F
Jan 02, 2026
3 mph SW
Mostly Clear
Mostly clear, with a low around 62.
Saturday - 76°F
Jan 03, 2026
3 to 7 mph SW
Sunny
Sunny, with a high near 76.
Saturday Night - 65°F
Jan 03, 2026
9 mph SW
Mostly Clear
Mostly clear, with a low around 65.
Sunday - 78°F
Jan 04, 2026
8 mph W
Sunny
Sunny, with a high near 78.
Sunday Night - 66°F
Jan 04, 2026
9 mph NW
Mostly Clear
Mostly clear, with a low around 66.

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