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4NM NE San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:48 pm EDT Aug 9, 2026
Forecast Valid: 11pm EDT Aug 9, 2026-6pm EDT Aug 16, 2026

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Overnight

E wind around 12 kt. Isolated showers. Widespread haze. Seas 1 ft or less.

Monday

E wind 13 to 16 kt. Isolated showers before 9am, then isolated showers after noon. Widespread haze. Seas 1 ft or less.

Monday Night

E wind around 10 kt. Scattered showers, mainly after midnight. Widespread haze before midnight. Seas 1 ft or less.

Tuesday

E wind 11 to 15 kt. Scattered showers, with thunderstorms also possible after noon. Seas 1 ft or less.

Tuesday Night

ESE wind 8 to 10 kt. Isolated showers. Widespread haze. Seas 1 ft or less.

Wednesday

E wind 10 to 17 kt, with gusts as high as 23 kt. Scattered showers, then showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.

Wednesday Night

E wind 9 to 12 kt. Scattered showers. Seas 1 ft or less.

Thursday

E wind 16 to 18 kt, with gusts as high as 24 kt. Widespread haze. Seas 1 ft or less.

Thursday Night

E wind 12 to 15 kt. Widespread haze. Seas 1 ft or less.

*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.