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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]

This Afternoon
High: 85 °F
E 9kt
3ft
Tonight
Low: 82 °F
SE 6kt⇓
2-3ft
Monday
High: 85 °F
⇑E 12kt
2-3ft
Monday Night
Low: 82 °F
SE 6kt⇓
3ft
Tuesday
High: 85 °F
⇑E 10kt
4-5ft
Tuesday Night
Low: 82 °F
Light Wind
5ft
Wednesday
High: 85 °F
⇑E 10kt
4ft
Wednesday Night
Low: 82 °F
Light Wind
4ft
Thursday
High: 85 °F
SE 6kt
4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:46 pm EDT Oct 18, 2026
Forecast Valid: 3pm EDT Oct 18, 2026-6pm EDT Oct 24, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

E wind around 9 kt. Showers likely and possibly a thunderstorm. Seas around 3 ft.

Tonight

SE wind around 6 kt becoming variable and less than 5 kt in the evening. Scattered showers before 9pm, then isolated showers after midnight. Seas 2 to 3 ft.

Monday

Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then scattered showers after 3pm. Seas 2 to 3 ft.

Monday Night

SE wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers, mainly between midnight and 3am. Seas around 3 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 4 to 5 ft.

Tuesday Night

Variable winds 5 kt or less. Scattered showers and thunderstorms before midnight, then isolated showers. Seas around 5 ft.

Wednesday

Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Scattered showers after noon. Seas around 4 ft.

Wednesday Night

Variable winds 5 kt or less. Mostly clear. Seas around 4 ft.

Thursday

SSE wind around 6 kt becoming E in the afternoon. 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.