For More Weather Information:

3NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:01 pm EDT Aug 13, 2026
Forecast Valid: 8pm EDT Aug 13, 2026-6pm EDT Aug 20, 2026

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Tonight

E wind around 12 kt. Isolated showers after 9pm. Seas around 4 ft.

Friday

E wind 13 to 15 kt, with gusts as high as 21 kt. Isolated showers after 9am. Seas around 5 ft.

Friday Night

E wind around 13 kt. Isolated showers after 9pm. Seas around 4 ft.

Saturday

ENE wind 15 to 17 kt, with gusts as high as 23 kt. Isolated showers. Seas around 5 ft.

Saturday Night

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

Sunday

E wind 16 to 18 kt, with gusts as high as 25 kt. Isolated showers, then showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.

Sunday Night

E wind around 10 kt. Showers likely. Seas 1 ft or less.

Monday

E wind 9 to 15 kt. Showers likely. Seas 1 ft or less building to 4 ft.

Monday Night

E wind 7 to 9 kt. Showers likely. Seas 3 to 4 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.