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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Today
High: 83 °F
⇑E 10kt
2ft
Tonight
Low: 80 °F
Light Wind
2ft
Thursday
High: 83 °F
E 8kt
2ft
Thursday Night
Low: 80 °F
E 9kt⇓
3ft
Friday
High: 83 °F
⇑E 11kt
3ft
Friday Night
Low: 80 °F
E 8kt
3ft
Saturday
High: 83 °F
E 14kt
3ft
Saturday Night
Low: 80 °F
ESE 9kt
3ft
Sunday
High: 83 °F
E 14kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:23 am EDT Apr 29, 2026
Forecast Valid: 6am EDT Apr 29, 2026-6pm EDT May 5, 2026

View Nearby Observations

Detailed Forecast

Today

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Seas around 2 ft.

Tonight

Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 2 ft.

Thursday

SE wind 6 to 8 kt becoming E in the afternoon. Scattered showers, then showers likely and possibly a thunderstorm after noon. Seas around 2 ft.

Thursday Night

E wind 5 to 9 kt becoming variable and less than 5 kt. Scattered showers. Seas around 3 ft.

Friday

Variable winds less than 5 kt becoming E 6 to 11 kt in the morning. Scattered showers. Seas around 3 ft.

Friday Night

E wind 6 to 8 kt. Scattered showers. Seas around 3 ft.

Saturday

E wind 8 to 14 kt. Scattered showers before noon. Seas around 3 ft.

Saturday Night

ESE wind 7 to 9 kt. Clear. Seas around 3 ft.

Sunday

E wind 7 to 14 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.