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San Juan, PR Local Forecast Office

27NM S San Juan PR

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 85 °F
E 11kt
3ft
Tonight
Low: 82 °F
ENE 10kt
3ft
Sunday
High: 83 °F
NE 8kt
3ft
Sunday Night
Low: 81 °F
SE 13kt
3-4ft
Monday
High: 83 °F
ESE 9kt
4ft
Monday Night
Low: 82 °F
E 8kt
3ft
Tuesday
High: 85 °F
E 10kt
3ft
Tuesday Night
Low: 82 °F
ENE 9kt
3ft
Wednesday
High: 85 °F
E 11kt
3ft

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: 5pm EDT Aug 29, 2026-6pm EDT Sep 5, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

E wind around 11 kt. Isolated showers. Seas around 3 ft.

Tonight

ENE wind 7 to 10 kt. Scattered showers, mainly after midnight. Seas around 3 ft.

Sunday

NE wind around 8 kt becoming SE in the afternoon. Showers likely and possibly a thunderstorm before 9am, then scattered showers and thunderstorms between 9am and 3pm, then showers and possibly a thunderstorm after 3pm. Seas around 3 ft.

Sunday Night

SE wind 10 to 13 kt. Showers and possibly a thunderstorm. Seas 3 to 4 ft.

Monday

ESE wind around 9 kt. Showers likely and possibly a thunderstorm. Seas around 4 ft.

Monday Night

E wind around 8 kt. Scattered showers, then showers likely and possibly a thunderstorm after midnight. Seas around 3 ft.

Tuesday

E wind 8 to 10 kt. Scattered showers before noon. Seas around 3 ft.

Tuesday Night

ENE wind 6 to 9 kt. Scattered showers. Seas around 3 ft.

Wednesday

E wind 8 to 11 kt. Scattered showers. Seas around 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.