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27NM S San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:25 am EDT May 18, 2026
Forecast Valid: 11am EDT May 18, 2026-6pm EDT May 24, 2026

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Today

E wind around 12 kt. Scattered showers, mainly before 3pm. Seas 3 to 4 ft.

Tonight

E wind around 10 kt. Scattered showers, mainly between 9pm and midnight. Seas around 3 ft.

Tuesday

E wind 10 to 13 kt. Scattered showers before 9am, then isolated showers after noon. Seas 3 to 4 ft.

Tuesday Night

ENE wind around 10 kt. Scattered showers. Seas around 3 ft.

Wednesday

E wind around 13 kt. Scattered showers. Seas around 4 ft.

Wednesday Night

ENE wind 10 to 12 kt. Scattered showers. Seas around 4 ft.

Thursday

E wind around 11 kt. Scattered showers before noon. Seas 3 to 4 ft.

Thursday Night

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

Friday

E wind 10 to 12 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.