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4NM NW San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 9:30 pm EST Dec 29, 2025
Forecast Valid: 1am EST Dec 30, 2025-6pm EST Jan 5, 2026

Tuesday

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Sunny. Seas around 4 ft.

Tuesday Night

SE wind 5 to 7 kt. Mostly clear. Seas 4 to 5 ft.

Wednesday

SE wind 5 to 10 kt becoming E in the afternoon. Isolated showers. Seas 4 to 5 ft.

Wednesday Night

ESE wind 5 to 8 kt becoming variable and less than 5 kt. Isolated showers before 11pm. Seas around 4 ft.

New Year's Day

E wind 5 to 13 kt. Scattered showers, mainly after 11am. Seas 3 to 4 ft.

Thursday Night

ESE wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Isolated showers. Seas around 3 ft.

Friday

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Scattered showers. Seas around 3 ft.

Friday Night

E wind 5 to 9 kt. Partly cloudy. Seas around 3 ft.

Saturday

E wind 5 to 11 kt. Scattered showers. Seas around 3 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.