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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 84 °F
E 18kt
5ft
Tonight
Low: 83 °F
E 14kt
5ft
Sunday
High: 84 °F
E 15kt
5ft
Sunday Night
Low: 83 °F
E 10kt
4ft
Monday
High: 84 °F
E 14kt
3ft
Monday Night
Low: 83 °F
E 10kt
3ft
Tuesday
High: 84 °F
ENE 14kt
2ft
Tuesday Night
Low: 83 °F
E 9kt
2ft
Wednesday
High: 84 °F
ENE 15kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:06 am EDT Aug 15, 2026
Forecast Valid: 7am EDT Aug 15, 2026-6pm EDT Aug 21, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

Today

E wind 15 to 18 kt, with gusts as high as 25 kt. Scattered showers, mainly after 3pm. Seas around 5 ft.

Tonight

E wind 12 to 14 kt. Showers and thunderstorms likely, mainly before midnight, then showers likely and possibly a thunderstorm after 3am. Seas around 5 ft.

Sunday

E wind 12 to 15 kt, with gusts as high as 21 kt. Scattered showers, with thunderstorms also possible after noon. Seas around 5 ft.

Sunday Night

E wind around 10 kt. Isolated showers. Seas around 4 ft.

Monday

E wind 10 to 14 kt. Isolated showers. Seas around 3 ft.

Monday Night

E wind 5 to 10 kt. Isolated showers. Seas around 3 ft.

Tuesday

ENE wind 6 to 14 kt. Mostly sunny. Seas around 2 ft.

Tuesday Night

E wind around 9 kt. Partly cloudy. Seas around 2 ft.

Wednesday

ENE wind 7 to 15 kt. Mostly sunny. Seas around 2 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.