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4NM NE San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:49 pm EDT Jul 19, 2026
Forecast Valid: 4pm EDT Jul 19, 2026-6pm EDT Jul 26, 2026

...SMALL CRAFT SHOULD EXERCISE CAUTION...

This Afternoon

E wind around 14 kt. Isolated showers. Seas 1 ft or less.

Tonight

E wind 10 to 12 kt. Scattered showers, mainly after 3am. Widespread haze between 9pm and 3am. Seas 1 ft or less.

Monday

E wind 11 to 13 kt. Scattered showers, mainly between 9am and noon. Widespread haze before 9am, then Widespread haze after noon. Seas 1 ft or less.

Monday Night

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

Tuesday

NE wind 7 to 11 kt. Scattered showers, mainly before noon. Seas 1 ft or less.

Tuesday Night

ENE wind 6 to 8 kt becoming ESE after midnight. Isolated showers. Seas 1 ft or less.

Wednesday

E wind 6 to 11 kt increasing to 12 to 17 kt in the afternoon. Winds could gust as high as 23 kt. Mostly sunny. Seas 1 ft or less.

Wednesday Night

SE wind around 10 kt. Partly cloudy. Seas 1 ft or less.

Thursday

E wind 10 to 16 kt, with gusts as high as 22 kt. Sunny. 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.