For More Weather Information:

Miami - South Florida Local Forecast Office

5NM WNW Key Biscayne FL

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 90 °F
S 8kt
Tonight
Low: 81 °F
Light Wind
Monday
High: 89 °F
⇑SE 9kt
Monday Night
Low: 82 °F
SE 6kt⇓
Tuesday
High: 89 °F
⇑SE 8kt
Tuesday Night
Low: 81 °F
SE 6kt⇓
Wednesday
High: 89 °F
⇑SE 8kt
Wednesday Night
Low: 82 °F
SE 6kt⇓
Thursday
High: 89 °F
SE 9kt

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:02 pm EDT Jun 21, 2026
Forecast Valid: 5pm EDT Jun 21, 2026-6pm EDT Jun 28, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

S wind around 8 kt. A chance of showers and thunderstorms. Bay waters smooth.

Tonight

Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 8pm. Bay waters smooth.

Monday

Variable winds less than 5 kt becoming SE 5 to 9 kt in the morning. A slight chance of showers and thunderstorms after 4pm. Bay waters smooth becoming a light chop.

Monday Night

SE wind around 6 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Bay waters smooth.

Tuesday

Variable winds less than 5 kt becoming SE 5 to 8 kt in the morning. A slight chance of showers and thunderstorms after 2pm. Bay waters smooth becoming a light chop.

Tuesday Night

SE wind around 6 kt becoming variable and less than 5 kt in the evening. A slight chance of showers and thunderstorms before 8pm. Bay waters smooth.

Wednesday

Variable winds less than 5 kt becoming SE 5 to 8 kt in the afternoon. A slight chance of showers and thunderstorms after 2pm. Bay waters smooth becoming a light chop.

Wednesday Night

SE wind around 6 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Bay waters smooth.

Thursday

SE wind 5 to 9 kt. A slight chance of showers and thunderstorms. Bay waters smooth becoming a light chop.

Winds and waves higher in and near tstms.

*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.