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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 83 °F
⇑E 11kt
2ft
Tonight
Low: 80 °F
E 8kt⇓
3ft
Friday
High: 83 °F
ENE 14kt
3ft
Friday Night
Low: 80 °F
ESE 9kt
3ft
Saturday
High: 83 °F
E 14kt
3ft
Saturday Night
Low: 80 °F
E 9kt
3ft
Sunday
High: 83 °F
E 14kt
3ft
Sunday Night
Low: 80 °F
ESE 9kt
3ft
Monday
High: 83 °F
E 12kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:20 am EDT Apr 30, 2026
Forecast Valid: 6am EDT Apr 30, 2026-6pm EDT May 6, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming E 6 to 11 kt in the morning. Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Seas around 2 ft.

Tonight

E wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Scattered showers, mainly after 3am. Seas around 3 ft.

Friday

ESE wind 6 to 14 kt becoming ENE in the morning. Scattered showers. Seas around 3 ft.

Friday Night

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

Saturday

E wind 7 to 14 kt. Scattered showers, mainly before noon. Seas around 3 ft.

Saturday Night

E wind 6 to 9 kt. Clear. Seas around 3 ft.

Sunday

E wind 9 to 14 kt. Mostly sunny. Seas around 3 ft.

Sunday Night

ESE wind 7 to 9 kt. Partly cloudy. Seas around 3 ft.

Monday

E wind 8 to 12 kt. Mostly sunny. Seas around 3 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.