Dangerous Surf and Rip Currents for most of the Atlantic Shoreline; Record Heat for the West

Hurricane Erin continues to track northward. Tropical storm force winds, storm surge conditions will increase for the Outer Banks today and portions of coastal Virginia. Life-threatening surf and rip currents along much of the east coast of the U.S. this week. Major to extreme HeatRisk with new record high temperatures are expected for many areas of the western U.S. this week. Read More >

For More Weather Information:

Miami - South Florida Local Forecast Office

5NM WNW Key Biscayne FL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 93 °F
W 8kt
Tonight
Low: 81 °F
W 9kt
Thursday
High: 92 °F
SW 10kt
Thursday Night
Low: 81 °F
WSW 9kt
Friday
High: 91 °F
S 9kt
Friday Night
Low: 80 °F
SW 7kt
Saturday
High: 90 °F
⇑S 8kt
Saturday Night
Low: 81 °F
WSW 6kt
Sunday
High: 90 °F
S 9kt

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:16 pm EDT Aug 20, 2025
Forecast Valid: 2pm EDT Aug 20, 2025-6pm EDT Aug 26, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

W wind around 8 kt. A chance of showers and thunderstorms, mainly after 3pm. Bay waters smooth.

Tonight

W wind around 9 kt. A chance of showers and thunderstorms, mainly before 2am. Bay waters a light chop.

Thursday

W wind 7 to 10 kt becoming SW in the afternoon. Showers and thunderstorms likely, mainly before 4pm. Bay waters smooth becoming a light chop.

Thursday Night

WSW wind 6 to 9 kt. A chance of showers and thunderstorms, mainly before 7pm. Bay waters a light chop becoming smooth.

Friday

W wind 5 to 9 kt becoming S in the afternoon. Showers and thunderstorms likely, mainly after 2pm. Bay waters smooth becoming a light chop.

Friday Night

SW wind 5 to 7 kt. Showers and thunderstorms likely, mainly before 8pm. Bay waters smooth.

Saturday

Variable winds less than 5 kt becoming S 5 to 8 kt in the afternoon. A chance of showers and thunderstorms after 8am. Bay waters smooth.

Saturday Night

WSW wind around 6 kt. A slight chance of showers and thunderstorms before 2am. Bay waters smooth.

Sunday

WSW wind 5 to 9 kt becoming S in the afternoon. A chance of showers and thunderstorms, mainly after 2pm. 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.