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4NM NE San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 11:27 am EDT Aug 12, 2026
Forecast Valid: 6pm EDT Aug 12, 2026-6pm EDT Aug 19, 2026

Tonight

E wind 10 to 12 kt. Showers likely and possibly a thunderstorm before 9pm, then scattered showers. Seas 1 ft or less.

Thursday

E wind 13 to 19 kt, with gusts as high as 27 kt. Scattered showers, mainly before noon. Widespread haze after noon. Seas 1 ft or less.

Thursday Night

E wind around 14 kt, with gusts as high as 21 kt. Isolated showers. Widespread haze. Seas 1 ft or less.

Friday

E wind 14 to 17 kt, with gusts as high as 25 kt. Isolated showers. Seas 1 ft or less.

Friday Night

E wind around 14 kt, with gusts as high as 21 kt. Isolated showers. Seas 1 ft or less.

Saturday

ENE wind around 16 kt, with gusts as high as 23 kt. Scattered showers, mainly after noon. Seas 1 ft or less.

Saturday Night

ENE wind 11 to 13 kt, with gusts as high as 20 kt. Clear. Seas 1 ft or less.

Sunday

ENE wind 13 to 16 kt, with gusts as high as 24 kt. Showers likely. Seas 1 ft or less.

Sunday Night

E wind 12 to 17 kt, with gusts as high as 24 kt. Showers likely. Seas 1 ft or less.

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.