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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Monday
High: 81 °F
ENE 15kt
4ft
Monday Night
Low: 79 °F
ENE 12kt
4-5ft

Small Craft Advisory
Tuesday
High: 81 °F
ENE 13kt
7ft

Small Craft Advisory
Tuesday Night
Low: 79 °F
ENE 11kt
8ft

Small Craft Advisory
Wednesday
High: 81 °F
ENE 14kt
8ft

Small Craft Advisory
Wednesday Night
Low: 79 °F
E 11kt
8ft

Small Craft Advisory
Thursday
High: 81 °F
ENE 13kt
7ft

Small Craft Advisory
Thursday Night
Low: 79 °F
E 10kt
6-7ft

Small Craft Advisory
Friday
High: 81 °F
ENE 14kt
6ft

Small Craft Advisory

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:47 pm EDT Mar 29, 2026
Forecast Valid: 1am EDT Mar 30, 2026-6pm EDT Apr 5, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH FRIDAY

Monday

ENE wind 11 to 15 kt. Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then scattered showers after 3pm. Seas around 4 ft.

Monday Night

ENE wind 10 to 12 kt. Scattered showers before 9pm, then scattered showers and thunderstorms between 9pm and 3am, then showers likely and possibly a thunderstorm after 3am. Seas 4 to 5 ft.

Tuesday

ENE wind 11 to 13 kt. Showers likely and possibly a thunderstorm before 9am, then scattered showers and thunderstorms between 9am and noon, then scattered showers after noon. Seas around 7 ft.

Tuesday Night

ENE wind around 11 kt. Scattered showers. Seas around 8 ft.

Wednesday

ENE wind 11 to 14 kt. Scattered showers. Seas around 8 ft.

Wednesday Night

E wind around 11 kt. Scattered showers and thunderstorms. Seas around 8 ft.

Thursday

ENE wind 11 to 13 kt. Scattered showers before noon. Seas around 7 ft.

Thursday Night

E wind around 10 kt. Mostly clear. Seas 6 to 7 ft.

Friday

ENE wind 10 to 14 kt. Mostly sunny. Seas around 6 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.