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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 82 °F
E 13kt
4ft
Tonight
Low: 80 °F
E 10kt
4ft
Sunday
High: 82 °F
E 14kt
4ft
Sunday Night
Low: 80 °F
E 10kt
4ft
Monday
High: 82 °F
E 14kt
4ft
Monday Night
Low: 80 °F
E 9kt
3-4ft
Tuesday
High: 82 °F
ENE 12kt
3ft
Tuesday Night
Low: 80 °F
E 6kt⇓
2-3ft
Wednesday
High: 82 °F
ENE 9kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:05 pm EDT Apr 18, 2026
Forecast Valid: 4pm EDT Apr 18, 2026-6pm EDT Apr 25, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

E wind around 13 kt. Scattered showers. Seas around 4 ft.

Tonight

E wind 8 to 10 kt. Showers likely and possibly a thunderstorm before midnight, then scattered showers and thunderstorms between midnight and 3am, then scattered showers after 3am. Seas around 4 ft.

Sunday

E wind 8 to 14 kt. Scattered showers, with thunderstorms also possible after 3pm. Seas around 4 ft.

Sunday Night

E wind 8 to 10 kt. Showers likely, mainly before 3am. Seas around 4 ft.

Monday

E wind 9 to 14 kt. Scattered showers, with thunderstorms also possible after noon. Seas around 4 ft.

Monday Night

E wind 6 to 9 kt. Scattered showers. Seas 3 to 4 ft.

Tuesday

ENE wind 5 to 12 kt. Scattered showers before noon. Seas around 3 ft.

Tuesday Night

E wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Seas 2 to 3 ft.

Wednesday

ENE wind 6 to 9 kt. Scattered showers. 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.