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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 81 °F
ESE 15kt
6-7ft

Small Craft Advisory
Tonight
Low: 80 °F
SE 10kt
5-6ft

Small Craft Advisory
Monday
High: 81 °F
ESE 15kt
5ft
Monday Night
Low: 80 °F
ESE 8kt
4-5ft
Tuesday
High: 81 °F
ESE 15kt
4ft
Tuesday Night
Low: 80 °F
ESE 8kt
3-4ft
Wednesday
High: 81 °F
E 15kt
3ft
Wednesday Night
Low: 80 °F
ESE 10kt
4ft
Thursday
High: 81 °F
E 15kt
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:48 am EDT Apr 5, 2026
Forecast Valid: 11am EDT Apr 5, 2026-6pm EDT Apr 11, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

Today

ESE wind 13 to 15 kt. Scattered showers, then showers and possibly a thunderstorm after noon. Seas 6 to 7 ft.

Tonight

SE wind 8 to 10 kt. Showers likely and possibly a thunderstorm before midnight, then scattered showers after 3am. Seas 5 to 6 ft.

Monday

ESE wind 8 to 15 kt, with gusts as high as 21 kt. Scattered showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers after 3pm. Seas around 5 ft.

Monday Night

ESE wind 6 to 8 kt. Scattered showers, mainly after midnight. Seas 4 to 5 ft.

Tuesday

ESE wind 8 to 15 kt. Isolated showers, then showers likely and possibly a thunderstorm after noon. Seas around 4 ft.

Tuesday Night

ESE wind 6 to 8 kt. Scattered showers. Seas 3 to 4 ft.

Wednesday

E wind 7 to 15 kt. Showers likely, mainly after noon. Seas around 3 ft.

Wednesday Night

ESE wind 7 to 10 kt. Scattered showers. Seas around 4 ft.

Thursday

E wind 9 to 15 kt. Scattered showers. Seas around 4 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.