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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 84 °F
E 14kt
3ft
Tonight
Low: 82 °F
ESE 10kt
3ft
Thursday
High: 84 °F
E 18kt
3-4ft
Thursday Night
Low: 82 °F
E 13kt
4ft
Friday
High: 84 °F
E 17kt
5ft
Friday Night
Low: 82 °F
E 13kt
4ft
Saturday
High: 84 °F
ENE 16kt
5ft
Saturday Night
Low: 82 °F
ENE 13kt
5ft
Sunday
High: 84 °F
ENE 16kt
5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:27 am EDT Aug 12, 2026
Forecast Valid: 12pm EDT Aug 12, 2026-6pm EDT Aug 18, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

This Afternoon

E wind around 14 kt, with gusts as high as 20 kt. Scattered showers, with thunderstorms also possible after 3pm. Seas around 3 ft.

Tonight

ESE wind 8 to 10 kt. Showers likely and possibly a thunderstorm before 9pm, then scattered showers and thunderstorms between 9pm and midnight, then scattered showers after midnight. Seas around 3 ft.

Thursday

E wind 12 to 18 kt, with gusts as high as 26 kt. Scattered showers, mainly before noon. Seas 3 to 4 ft.

Thursday Night

E wind around 13 kt. Isolated showers after midnight. Seas around 4 ft.

Friday

E wind 13 to 17 kt, with gusts as high as 25 kt. Isolated showers. Seas around 5 ft.

Friday Night

E wind around 13 kt, with gusts as high as 20 kt. Isolated showers. Seas around 4 ft.

Saturday

ENE wind 14 to 16 kt, with gusts as high as 24 kt. Scattered showers after noon. Seas around 5 ft.

Saturday Night

ENE wind 10 to 13 kt. Clear. Seas around 5 ft.

Sunday

ENE wind 13 to 16 kt, with gusts as high as 24 kt. Showers likely. Seas around 5 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.