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3NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:42 am EDT Aug 14, 2026
Forecast Valid: 1pm EDT Aug 14, 2026-6pm EDT Aug 20, 2026

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

This Afternoon

E wind around 17 kt, with gusts as high as 23 kt. Isolated showers. Seas around 5 ft.

Tonight

E wind around 14 kt. Scattered showers, mainly between midnight and 3am. Seas around 4 ft.

Saturday

E wind 14 to 18 kt, with gusts as high as 25 kt. Isolated showers. Seas around 5 ft.

Saturday Night

ENE wind around 16 kt, with gusts as high as 22 kt. Scattered showers and thunderstorms. Seas 5 to 6 ft.

Sunday

E wind 13 to 16 kt. Scattered showers, with thunderstorms also possible after noon. Seas 1 ft or less.

Sunday Night

E wind around 11 kt. Scattered showers, mainly before midnight. Seas 1 ft or less.

Monday

E wind 10 to 16 kt. Scattered showers after noon. Seas 1 ft or less building to 4 ft.

Monday Night

E wind 7 to 9 kt. Scattered showers. Seas 3 to 4 ft.

Tuesday

E wind 7 to 15 kt. Scattered showers. Seas around 3 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.