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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Thursday
High: 82 °F
⇑NE 11kt
5ft
Thursday Night
Low: 80 °F
E 7kt
4-5ft
Friday
High: 82 °F
⇑ENE 10kt
4ft
Friday Night
Low: 80 °F
E 7kt⇓
4ft
Saturday
High: 82 °F
⇑ESE 6kt
3ft
Saturday Night
Low: 80 °F
Light Wind
3ft
Sunday
High: 82 °F
⇑E 8kt
2ft
Sunday Night
Low: 80 °F
Light Wind
2ft
Monday
High: 82 °F
⇑E 9kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:33 am EDT Apr 23, 2026
Forecast Valid: 4am EDT Apr 23, 2026-6pm EDT Apr 29, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

Thursday

Variable winds less than 5 kt becoming NE 6 to 11 kt in the morning. Isolated showers after 3pm. Seas around 5 ft.

Thursday Night

E wind 5 to 7 kt becoming SSE after midnight. Isolated showers after midnight. Seas 4 to 5 ft.

Friday

Variable winds less than 5 kt becoming ENE 5 to 10 kt in the morning. Scattered showers after noon. Seas around 4 ft.

Friday Night

E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Scattered showers. Seas around 4 ft.

Saturday

Variable winds less than 5 kt becoming ESE around 6 kt in the morning. Isolated showers, then showers likely and possibly a thunderstorm after noon. Seas around 3 ft.

Saturday Night

Variable winds 5 kt or less. Isolated showers. Seas around 3 ft.

Sunday

Variable winds less than 5 kt becoming E 5 to 8 kt in the morning. Showers likely after noon. Seas around 2 ft.

Sunday Night

Variable winds 5 kt or less. Partly cloudy. Seas around 2 ft.

Monday

Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. Showers likely. Seas 2 to 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.