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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 82 °F
SE 10kt
4-5ft
Monday
High: 84 °F
ESE 13kt
5ft
Monday Night
Low: 82 °F
ESE 8kt
4ft
Tuesday
High: 85 °F
E 13kt
3ft
Tuesday Night
Low: 82 °F
ESE 8kt
2-3ft
Wednesday
High: 85 °F
E 13kt
2ft
Wednesday Night
Low: 82 °F
ESE 9kt
2ft
Thursday
High: 85 °F
E 14kt
2ft
Thursday Night
Low: 82 °F
E 10kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:45 pm EDT Aug 30, 2026
Forecast Valid: 10pm EDT Aug 30, 2026-6pm EDT Sep 6, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Tonight

SE wind around 10 kt. Scattered showers before midnight, then scattered showers and thunderstorms between midnight and 3am, then showers and possibly a thunderstorm after 3am. Seas 4 to 5 ft.

Monday

ESE wind 6 to 13 kt. Showers 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 5 ft.

Monday Night

ESE wind 6 to 8 kt. Scattered showers and thunderstorms. Seas around 4 ft.

Tuesday

E wind 6 to 13 kt. Scattered showers, mainly after noon. Seas around 3 ft.

Tuesday Night

ESE wind 5 to 8 kt. Scattered showers, mainly after midnight. Seas 2 to 3 ft.

Wednesday

E wind 8 to 13 kt. Scattered showers. Seas around 2 ft.

Wednesday Night

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

Thursday

E wind 7 to 14 kt. Scattered showers. Seas around 2 ft.

Thursday Night

E wind 8 to 10 kt. Mostly clear. Seas around 2 ft.

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.