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Key Biscayne FL

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:16 pm EST Dec 4, 2025
Forecast Valid: 6pm EST Dec 4, 2025-6pm EST Dec 11, 2025

Tonight

ENE wind around 10 kt. Partly cloudy. Bay waters a light chop.

Friday

SSE wind around 9 kt. Sunny. Bay waters a light chop.

Friday Night

S wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Bay waters smooth.

Saturday

Variable winds less than 5 kt becoming S 5 to 9 kt in the morning. Mostly sunny. Bay waters smooth becoming a light chop.

Saturday Night

S wind 6 to 8 kt. Partly cloudy. Bay waters smooth.

Sunday

S wind 5 to 11 kt. A slight chance of showers after 1pm. Bay waters smooth becoming a light chop.

Sunday Night

SW wind 8 to 10 kt. A chance of showers, mainly after 1am. Bay waters a light chop.

Monday

WSW wind 10 to 14 kt becoming NNW in the afternoon. A chance of showers, with thunderstorms also possible after 1pm. Bay waters a light chop.

Monday Night

N wind 14 to 16 kt. A slight chance of showers before 1am. Bay waters a light chop.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.