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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:E wind 7 to 9 kt. Isolated showers after midnight.   Seas 2 to 3 ft.

      Low: 82 °F

      E 9kt
      2-3ft

    • Wednesday

      Wednesday:E wind 7 to 15 kt. Scattered showers and thunderstorms.   Seas around 2 ft.

      High: 84 °F

      E 15kt
      2ft

    • Wednesday Night

      Wednesday Night:ESE wind around 9 kt. Scattered showers and thunderstorms.   Seas around 2 ft.

      Low: 82 °F

      ESE 9kt
      2ft

    • Thursday

      Thursday:E wind 11 to 15 kt, with gusts as high as 21 kt. Isolated showers.   Seas around 3 ft.

      High: 84 °F

      E 15kt
      3ft

    • Thursday Night

      Thursday Night:E wind 9 to 11 kt. Mostly clear. Seas around 3 ft.

      Low: 82 °F

      E 11kt
      3ft

    • Friday

      Friday:ENE wind 13 to 15 kt. Isolated showers after noon.   Seas around 3 ft.

      High: 84 °F

      ENE 15kt
      3ft

    • Friday Night

      Friday Night:E wind around 10 kt. Scattered showers.   Seas around 3 ft.

      Low: 82 °F

      E 10kt
      3ft

    • Saturday

      Saturday:ENE wind 8 to 14 kt, with gusts as high as 20 kt. Mostly sunny. Seas around 3 ft.

      High: 84 °F

      ENE 14kt
      3ft

    • Saturday Night

      Saturday Night:E wind around 9 kt. Scattered showers.   Seas around 3 ft.

      Low: 82 °F

      E 9kt
      3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:27 pm EDT Aug 18, 2026
Forecast Valid: 11pm EDT Aug 18, 2026-6pm EDT Aug 25, 2026

View Nearby Observations

Detailed Forecast


Overnight
E wind 7 to 9 kt. Isolated showers after midnight. Seas 2 to 3 ft.
Wednesday
E wind 7 to 15 kt. Scattered showers and thunderstorms. Seas around 2 ft.
Wednesday Night
ESE wind around 9 kt. Scattered showers and thunderstorms. Seas around 2 ft.
Thursday
E wind 11 to 15 kt, with gusts as high as 21 kt. Isolated showers. Seas around 3 ft.
Thursday Night
E wind 9 to 11 kt. Mostly clear. Seas around 3 ft.
Friday
ENE wind 13 to 15 kt. Isolated showers after noon. Seas around 3 ft.
Friday Night
E wind around 10 kt. Scattered showers. Seas around 3 ft.
Saturday
ENE wind 8 to 14 kt, with gusts as high as 20 kt. Mostly sunny. Seas around 3 ft.
Saturday Night
E wind around 9 kt. Scattered showers. Seas around 3 ft.

Winds and seas higher in and near thunderstorms.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 18.45°N 66.1°W
Last Update: 4:27 pm EDT Aug 18, 2026
Forecast Valid: 11pm EDT Aug 18, 2026-6pm EDT Aug 25, 2026
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