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4NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:59 pm EDT Mar 27, 2026
Forecast Valid: 11pm EDT Mar 27, 2026-6pm EDT Apr 3, 2026

Overnight

ESE wind 6 to 8 kt. Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Seas around 4 ft.

Saturday

ENE wind 7 to 10 kt. Scattered showers and thunderstorms. Seas around 3 ft.

Saturday Night

ENE wind around 7 kt. Scattered showers. Seas around 3 ft.

Sunday

NE wind 9 to 11 kt. Scattered showers, with thunderstorms also possible after noon. Seas around 3 ft.

Sunday Night

NE wind 11 to 13 kt. Isolated showers. Seas 3 to 4 ft.

Monday

ENE wind 12 to 14 kt. Scattered showers and thunderstorms. Seas around 4 ft.

Monday Night

ENE wind around 11 kt. Showers likely. Seas 4 to 5 ft.

Tuesday

ENE wind 11 to 14 kt. Scattered showers. Seas 6 to 7 ft.

Tuesday Night

ENE wind around 12 kt. Showers likely. Seas around 8 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.