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San Juan, PR Local Forecast Office

4NM NE San Juan PR

Marine Point Forecast

[NOTICE]

Late Afternoon
High: 87 °F
Light Wind
< 1ft
Tonight
Low: 76 °F
SSW 6kt⇓
< 1ft
Monday
High: 86 °F
⇑E 7kt
< 1ft
Monday Night
Low: 77 °F
SSE 6kt⇓
< 1ft
Tuesday
High: 85 °F
⇑E 9kt
< 1ft
Tuesday Night
Low: 77 °F
Light Wind
< 1ft
Wednesday
High: 85 °F
E 11kt
< 1ft
Wednesday Night
Low: 77 °F
E 7kt
< 1ft
Thursday
High: 86 °F
E 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:10 pm EDT Apr 26, 2026
Forecast Valid: 5pm EDT Apr 26, 2026-6pm EDT May 3, 2026

View Nearby Observations

Detailed Forecast

Late Afternoon

Variable winds 5 kt or less. Scattered showers. Seas 1 ft or less.

Tonight

SSW wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers, mainly before 9pm. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming E 5 to 7 kt in the morning. Scattered showers, then showers likely and possibly a thunderstorm after 3pm. Seas 1 ft or less.

Monday Night

SSE wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers before midnight, then scattered showers and thunderstorms between midnight and 3am, then scattered showers after 3am. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming E 5 to 9 kt in the morning. Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Wednesday

E wind 5 to 11 kt. Scattered showers. Seas 1 ft or less.

Wednesday Night

E wind 5 to 7 kt. Scattered showers. Seas 1 ft or less.

Thursday

E wind 6 to 10 kt. Scattered showers. Seas 1 ft or less.

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.