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27NM S San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:48 am EDT Aug 16, 2026
Forecast Valid: 1pm EDT Aug 16, 2026-6pm EDT Aug 22, 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

This Afternoon

E wind around 14 kt. Widespread haze. Seas around 5 ft.

Tonight

ENE wind 9 to 12 kt. Isolated showers between 9pm and 3am. Widespread haze before 9pm. Seas around 4 ft.

Monday

E wind 10 to 13 kt. Isolated showers before 3pm. Seas 3 to 4 ft.

Monday Night

ENE wind 7 to 9 kt. Isolated showers. Seas around 3 ft.

Tuesday

E wind 9 to 11 kt. Isolated showers. Seas around 2 ft.

Tuesday Night

ENE wind around 8 kt. Mostly clear. Seas around 2 ft.

Wednesday

ESE wind around 10 kt. Scattered showers after noon. Seas around 2 ft.

Wednesday Night

Variable winds less than 5 kt becoming E around 6 kt after midnight. Partly cloudy. Seas around 2 ft.

Thursday

E wind 9 to 11 kt. Showers likely. Seas around 2 ft.

*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.