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4NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:17 pm EDT Apr 16, 2026
Forecast Valid: 11pm EDT Apr 16, 2026-6pm EDT Apr 23, 2026

Overnight

ESE wind 6 to 9 kt. Showers likely and possibly a thunderstorm. Seas around 4 ft.

Friday

E wind 7 to 13 kt. Showers likely, then showers and possibly a thunderstorm after noon. Seas around 4 ft.

Friday Night

ESE wind around 8 kt. Showers likely and possibly a thunderstorm before 3am, then scattered showers. Seas around 3 ft.

Saturday

E wind 8 to 14 kt. Isolated showers. Seas 3 to 4 ft.

Saturday Night

E wind around 9 kt. Scattered showers before midnight. Seas around 4 ft.

Sunday

E wind 8 to 12 kt. Isolated showers. Seas around 4 ft.

Sunday Night

E wind 7 to 9 kt. Mostly clear. Seas around 4 ft.

Monday

E wind 7 to 14 kt. Scattered showers. Seas around 4 ft.

Monday Night

E wind 8 to 10 kt. Partly cloudy. Seas 3 to 4 ft.

Winds and seas higher in and near thunderstorms.

*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.