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4NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 8:28 pm EDT Apr 3, 2026
Forecast Valid: 11pm EDT Apr 3, 2026-6pm EDT Apr 10, 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...

Overnight

E wind around 9 kt. Showers likely, mainly before midnight. Seas around 6 ft.

Saturday

E wind 10 to 14 kt, with gusts as high as 20 kt. Isolated showers, then showers likely and possibly a thunderstorm after noon. Seas around 6 ft.

Saturday Night

E wind 8 to 11 kt. Showers likely and possibly a thunderstorm. Seas around 6 ft.

Sunday

E wind 9 to 15 kt. Showers and possibly a thunderstorm. Seas around 6 ft.

Sunday Night

ESE wind 7 to 9 kt. Showers likely and possibly a thunderstorm. Seas around 6 ft.

Monday

ESE wind 6 to 14 kt. Scattered showers. Seas around 5 ft.

Monday Night

SE wind 5 to 8 kt. Partly cloudy. Seas 4 to 5 ft.

Tuesday

ESE wind 7 to 13 kt. Showers likely. Seas around 4 ft.

Tuesday Night

SE wind 5 to 7 kt. Partly cloudy. Seas 3 to 4 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.