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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]

Tonight
Low: 78 °F
Light Wind
2ft
Tuesday
High: 83 °F
⇑E 10kt
2ft
Tuesday Night
Low: 78 °F
ESE 8kt
2ft
Wednesday
High: 83 °F
E 13kt
2ft
Wednesday Night
Low: 78 °F
E 8kt
2ft
Thursday
High: 81 °F
E 13kt
2ft
Thursday Night
Low: 78 °F
E 9kt
2ft
Friday
High: 81 °F
E 13kt
2-3ft
Friday Night
Low: 78 °F
E 9kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:48 pm EDT May 19, 2025
Forecast Valid: 6pm EDT May 19, 2025-6pm EDT May 26, 2025

View Nearby Observations

Detailed Forecast

Tonight

Variable winds 5 kt or less. Scattered showers, mainly before 9pm. Widespread haze between midnight and 3am. Seas around 2 ft.

Tuesday

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 noon. Seas around 2 ft.

Tuesday Night

ESE wind 6 to 8 kt. Scattered showers, mainly between 9pm and midnight. Seas around 2 ft.

Wednesday

E wind 5 to 13 kt. Scattered showers. Seas around 2 ft.

Wednesday Night

E wind 6 to 8 kt. Scattered showers. Seas around 2 ft.

Thursday

E wind 8 to 13 kt. Scattered showers, mainly after noon. Seas around 2 ft.

Thursday Night

E wind 7 to 9 kt. Partly cloudy. Seas around 2 ft.

Friday

E wind 8 to 13 kt. Scattered showers. Seas 2 to 3 ft.

Friday Night

E wind around 9 kt. Partly cloudy. Seas around 3 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.