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4NM NE San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 4:27 am EDT Sep 18, 2026
Forecast Valid: 5am EDT Sep 18, 2026-6pm EDT Sep 24, 2026

Today

E wind 7 to 14 kt. Isolated showers. Seas 1 ft or less.

Tonight

E wind 7 to 9 kt. Scattered showers, mainly after 9pm. Seas 1 ft or less.

Saturday

E wind 6 to 14 kt. Isolated showers before 9am, then scattered showers after noon. Seas 1 ft or less.

Saturday Night

ESE wind 5 to 8 kt. Scattered showers, mainly after midnight. Seas 1 ft or less.

Sunday

E wind 7 to 13 kt. Scattered showers, with thunderstorms also possible after noon. Seas 1 ft or less.

Sunday Night

ESE wind around 7 kt. Scattered showers, mainly after midnight. Seas 1 ft or less.

Monday

E wind 7 to 14 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

SE wind 7 to 9 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

E wind 6 to 14 kt. Scattered showers. Seas 1 ft or less.

*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.