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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 82 °F
Light Wind
3ft
Thursday
High: 85 °F
⇑ESE 11kt
3ft
Thursday Night
Low: 82 °F
Light Wind
4ft
Friday
High: 85 °F
⇑ESE 12kt
4-5ft
Friday Night
Low: 82 °F
ESE 8kt
4-5ft
Saturday
High: 85 °F
ESE 10kt
4ft
Saturday Night
Low: 82 °F
SE 7kt
4ft
Sunday
High: 85 °F
ESE 12kt
4ft
Sunday Night
Low: 82 °F
SE 7kt⇓
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:49 pm EDT Oct 21, 2026
Forecast Valid: 6pm EDT Oct 21, 2026-6pm EDT Oct 28, 2026

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Mostly clear. Seas around 3 ft.

Thursday

Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. Showers likely and possibly a thunderstorm, mainly after noon. Seas around 3 ft.

Thursday Night

Variable winds 5 kt or less. Scattered showers, with thunderstorms also possible after midnight. Seas around 4 ft.

Friday

Variable winds less than 5 kt becoming ESE 7 to 12 kt in the morning. Scattered showers, then showers and possibly a thunderstorm after noon. Seas 4 to 5 ft.

Friday Night

ESE wind 6 to 8 kt. Scattered showers, with thunderstorms also possible after midnight. Seas 4 to 5 ft.

Saturday

ESE wind 5 to 10 kt. Showers likely, mainly after noon. Seas around 4 ft.

Saturday Night

SE wind around 7 kt. Partly cloudy. Seas around 4 ft.

Sunday

ESE wind 6 to 12 kt. Scattered showers. Seas around 4 ft.

Sunday Night

SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 4 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.