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27NM S San Juan PR

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 8:55 am EDT Oct 20, 2026
Forecast Valid: 2pm EDT Oct 20, 2026-6pm EDT Oct 26, 2026

This Afternoon

SSE wind around 6 kt. Isolated showers. Seas around 1 ft.

Tonight

Variable winds 5 kt or less. Scattered showers, mainly after 3am. Seas around 1 ft.

Wednesday

Variable winds less than 5 kt becoming SE 5 to 8 kt in the morning. Scattered showers before 3pm. Seas 1 to 2 ft.

Wednesday Night

Variable winds 5 kt or less. Isolated showers, then showers likely and possibly a thunderstorm after 9pm. Seas 1 to 2 ft.

Thursday

ESE wind 6 to 9 kt. Showers likely and possibly a thunderstorm before noon, then scattered showers and thunderstorms after noon. Seas around 2 ft.

Thursday Night

Variable winds 5 kt or less. Scattered showers, then showers likely and possibly a thunderstorm after midnight. Seas around 2 ft.

Friday

ESE wind around 8 kt. Showers likely, mainly before noon. Seas around 2 ft.

Friday Night

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

Saturday

ESE wind 5 to 9 kt. Scattered showers. Seas 2 to 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.