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4NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:24 pm EST Dec 3, 2025
Forecast Valid: 2am EST Dec 4, 2025-6pm EST Dec 10, 2025

Thursday

Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Scattered showers, mainly before 5pm. Seas 3 to 4 ft.

Thursday Night

E wind 7 to 9 kt. Scattered showers, mainly after 8pm. Seas around 4 ft.

Friday

E wind 7 to 13 kt. Increasing clouds. Seas around 4 ft.

Friday Night

E wind around 10 kt. Scattered showers. Seas around 4 ft.

Saturday

E wind 8 to 13 kt. Sunny. Seas around 4 ft.

Saturday Night

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

Sunday

E wind 8 to 12 kt. Scattered showers before 11am. Seas around 3 ft.

Sunday Night

ESE wind 5 to 7 kt. Scattered showers. Seas around 3 ft.

Monday

ESE wind 5 to 11 kt. Scattered showers. 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.