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27NM S San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:40 pm EDT Sep 18, 2026
Forecast Valid: 1am EDT Sep 19, 2026-6pm EDT Sep 25, 2026

Saturday

E wind 5 to 9 kt. Isolated showers. Seas around 2 ft.

Saturday Night

E wind around 7 kt. Scattered showers. Seas around 2 ft.

Sunday

E wind 6 to 8 kt becoming SE in the afternoon. Scattered showers before noon. Seas around 2 ft.

Sunday Night

Variable winds less than 5 kt becoming E around 6 kt after midnight. Scattered showers, mainly after midnight. Seas around 1 ft.

Monday

ESE wind around 8 kt. Scattered showers before noon. Seas around 2 ft.

Monday Night

E wind around 7 kt. Isolated showers. Seas around 2 ft.

Tuesday

ESE wind 7 to 9 kt. Scattered showers before noon. Seas around 2 ft.

Tuesday Night

ENE wind 7 to 9 kt. Scattered showers. Seas around 2 ft.

Wednesday

E wind 8 to 11 kt. Scattered showers. 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.