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27NM S San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:21 pm EDT Aug 14, 2026
Forecast Valid: 11pm EDT Aug 14, 2026-6pm EDT Aug 21, 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

Overnight

ENE wind around 14 kt. Isolated showers. Seas around 5 ft.

Saturday

ENE wind 16 to 19 kt. Scattered showers, mainly before noon. Seas 4 to 5 ft.

Saturday Night

ENE wind 13 to 15 kt. Scattered showers, then showers likely and possibly a thunderstorm after midnight. Seas around 5 ft.

Sunday

E wind around 14 kt. Scattered showers. Seas around 5 ft.

Sunday Night

ENE wind 9 to 11 kt. Isolated showers after midnight. Seas 4 to 5 ft.

Monday

E wind 9 to 11 kt. Scattered showers and thunderstorms before noon, then isolated showers. Seas 3 to 4 ft.

Monday Night

ENE wind around 8 kt. Partly cloudy. Seas around 3 ft.

Tuesday

E wind 8 to 10 kt. Sunny. Seas around 2 ft.

Tuesday Night

ENE wind around 8 kt. Partly cloudy. 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.