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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 85 °F
ESE 10kt
4ft
Tonight
Low: 82 °F
Light Wind
4ft
Friday
High: 85 °F
ESE 12kt
4-5ft
Friday Night
Low: 82 °F
ESE 9kt
5ft
Saturday
High: 85 °F
ESE 12kt
5ft
Saturday Night
Low: 82 °F
ESE 6kt
4ft
Sunday
High: 85 °F
ESE 14kt
4ft
Sunday Night
Low: 82 °F
SE 7kt⇓
4ft
Monday
High: 85 °F
⇑ESE 10kt
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:25 am EDT Oct 22, 2026
Forecast Valid: 1pm EDT Oct 22, 2026-6pm EDT Oct 28, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ESE wind around 10 kt. Isolated showers, then scattered showers and thunderstorms after 3pm. Seas around 4 ft.

Tonight

Variable winds 5 kt or less. Scattered showers, mainly after 3am. Seas around 4 ft.

Friday

ESE wind 6 to 12 kt. Isolated showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Seas 4 to 5 ft.

Friday Night

ESE wind 7 to 9 kt. Showers likely and possibly a thunderstorm before 9pm, then scattered showers and thunderstorms after 9pm. Seas around 5 ft.

Saturday

ESE wind 7 to 12 kt. Scattered showers. Seas around 5 ft.

Saturday Night

ESE wind around 6 kt. Scattered showers, mainly after midnight. Seas around 4 ft.

Sunday

ESE wind 8 to 14 kt. Showers likely after noon. Seas around 4 ft.

Sunday Night

SE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas around 4 ft.

Monday

Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. Showers likely. Seas around 4 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.