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4NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:58 pm EST Jan 7, 2026
Forecast Valid: 10pm EST Jan 7, 2026-6pm EST Jan 14, 2026

Tonight

E wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers. Seas around 4 ft.

Thursday

Variable winds less than 5 kt becoming NE 5 to 10 kt in the morning. Scattered showers, mainly after 11am. Seas around 4 ft.

Thursday Night

ENE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Scattered showers. Seas around 3 ft.

Friday

ENE wind 5 to 11 kt. Scattered showers before 11am. Seas around 3 ft.

Friday Night

ENE wind around 9 kt. Isolated showers. Seas around 3 ft.

Saturday

ENE wind 9 to 12 kt. Scattered showers, mainly before 11am. Seas around 3 ft.

Saturday Night

E wind around 9 kt. Partly cloudy. Seas 3 to 4 ft.

Sunday

E wind 8 to 11 kt. Sunny. Seas around 4 ft.

Sunday Night

E wind 6 to 11 kt. Partly cloudy. Seas around 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.