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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Thursday
High: 84 °F
E 16kt
3ft
Thursday Night
Low: 81 °F
E 11kt
3ft
Juneteenth
High: 84 °F
E 16kt
3ft
Friday Night
Low: 81 °F
E 10kt
3ft
Saturday
High: 84 °F
E 17kt
3ft
Saturday Night
Low: 81 °F
E 11kt
3ft
Sunday
High: 84 °F
E 15kt
3ft
Sunday Night
Low: 81 °F
E 11kt
3ft
Monday
High: 84 °F
E 17kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:46 am EDT Jun 18, 2026
Forecast Valid: 2am EDT Jun 18, 2026-6pm EDT Jun 24, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Thursday

E wind 7 to 16 kt, with gusts as high as 22 kt. Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Seas around 3 ft.

Thursday Night

E wind 8 to 11 kt. Showers likely, mainly between midnight and 3am. Seas around 3 ft.

Juneteenth

E wind 10 to 16 kt. Scattered showers, mainly after 9am. Seas around 3 ft.

Friday Night

E wind 7 to 10 kt. Scattered showers, mainly after midnight. Seas around 3 ft.

Saturday

E wind 7 to 17 kt, with gusts as high as 23 kt. Isolated showers. Seas around 3 ft.

Saturday Night

E wind 9 to 11 kt. Showers likely and possibly a thunderstorm after midnight. Seas around 3 ft.

Sunday

E wind 10 to 15 kt, with gusts as high as 21 kt. Mostly sunny. Seas around 3 ft.

Sunday Night

E wind 9 to 11 kt. Partly cloudy. Seas around 3 ft.

Monday

E wind 10 to 17 kt, with gusts as high as 23 kt. Showers likely. 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.