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27NM S San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 6:50 pm EDT Aug 26, 2026
Forecast Valid: 1am EDT Aug 27, 2026-6pm EDT Sep 2, 2026

Thursday

E wind 8 to 12 kt. Scattered showers. Seas around 3 ft.

Thursday Night

ENE wind around 9 kt. Isolated showers before 3am. Seas around 3 ft.

Friday

E wind 11 to 13 kt. Isolated showers before noon. Seas around 3 ft.

Friday Night

ENE wind 9 to 11 kt. Isolated showers, then showers likely and possibly a thunderstorm after midnight. Seas around 3 ft.

Saturday

E wind around 12 kt. Scattered showers. Seas around 3 ft.

Saturday Night

ENE wind around 10 kt. Clear. Seas around 3 ft.

Sunday

E wind 13 to 15 kt. Mostly sunny. Seas around 3 ft.

Sunday Night

ENE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 3 ft.

Monday

ESE wind 7 to 11 kt. Sunny. 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.