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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 82 °F
E 12kt
4ft
Sunday
High: 83 °F
ENE 12kt
4ft
Sunday Night
Low: 81 °F
SSE 11kt
4-5ft
Monday
High: 83 °F
ESE 12kt
4-5ft
Monday Night
Low: 82 °F
ESE 8kt
3-4ft
Tuesday
High: 85 °F
E 13kt
3ft
Tuesday Night
Low: 82 °F
⇑ESE 6kt
2-3ft
Wednesday
High: 85 °F
ENE 13kt
2ft
Wednesday Night
Low: 82 °F
ESE 8kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:50 pm EDT Aug 29, 2026
Forecast Valid: 7pm EDT Aug 29, 2026-6pm EDT Sep 5, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Tonight

E wind 10 to 12 kt. Scattered showers, mainly after midnight. Seas around 4 ft.

Sunday

ENE wind 6 to 12 kt. Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms between noon and 3pm, then showers and possibly a thunderstorm after 3pm. Seas around 4 ft.

Sunday Night

SSE wind 8 to 11 kt. Showers and possibly a thunderstorm before 9pm, then scattered showers between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Seas 4 to 5 ft.

Monday

ESE wind 7 to 12 kt. Showers likely and possibly a thunderstorm. Seas 4 to 5 ft.

Monday Night

ESE wind 6 to 8 kt. Scattered showers, mainly after midnight. Seas 3 to 4 ft.

Tuesday

E wind 8 to 13 kt. Scattered showers. Seas around 3 ft.

Tuesday Night

Variable winds less than 5 kt becoming ESE around 6 kt in the evening. Scattered showers. Seas 2 to 3 ft.

Wednesday

ENE wind 7 to 13 kt. Scattered showers. Seas around 2 ft.

Wednesday Night

ESE wind around 8 kt. Partly cloudy. Seas around 2 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.