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San Juan, PR Local Forecast Office

4NM NE San Juan PR

Marine Point Forecast

[NOTICE]
    • Wednesday

      Wednesday:E wind 10 to 16 kt, with gusts as high as 22 kt. Showers likely and possibly a thunderstorm before 9am, then scattered showers and thunderstorms after 9am.   Seas 1 ft or less.

      High: 88 °F

      E 16kt
      < 1ft

    • Wednesday Night

      Wednesday Night:E wind around 13 kt. Scattered showers, then showers likely and possibly a thunderstorm after 3am.   Seas 1 ft or less.

      Low: 81 °F

      E 13kt
      < 1ft

    • Thursday

      Thursday:E wind 13 to 16 kt, with gusts as high as 22 kt. Showers likely and possibly a thunderstorm before 9am, then showers likely between 9am and noon, then showers likely and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 85 °F

      E 16kt
      < 1ft

    • Thursday Night

      Thursday Night:E wind around 11 kt. Scattered showers, mainly before midnight.   Seas 1 ft or less.

      Low: 82 °F

      E 11kt
      < 1ft

    • Friday

      Friday:E wind 11 to 16 kt. Isolated showers.  Widespread haze.  Seas 1 ft or less.

      High: 86 °F

      E 16kt
      < 1ft

    • Friday Night

      Friday Night:E wind around 10 kt. Widespread haze.  Seas 1 ft or less.

      Low: 82 °F

      E 10kt
      < 1ft

    • Saturday

      Saturday:ENE wind 11 to 14 kt, with gusts as high as 20 kt. Widespread haze.  Seas 1 ft or less.

      High: 87 °F

      ENE 14kt
      < 1ft

    • Saturday Night

      Saturday Night:E wind around 11 kt. Scattered showers.   Seas 1 ft or less.

      Low: 82 °F

      E 11kt
      < 1ft

    • Sunday

      Sunday:ENE wind 12 to 15 kt. Scattered showers.  Widespread haze before noon.  Seas 1 ft or less.

      High: 85 °F

      ENE 15kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:31 am EDT Sep 9, 2026
Forecast Valid: 2am EDT Sep 9, 2026-6pm EDT Sep 15, 2026

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Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Wednesday
E wind 10 to 16 kt, with gusts as high as 22 kt. Showers likely and possibly a thunderstorm before 9am, then scattered showers and thunderstorms after 9am. Seas 1 ft or less.
Wednesday Night
E wind around 13 kt. Scattered showers, then showers likely and possibly a thunderstorm after 3am. Seas 1 ft or less.
Thursday
E wind 13 to 16 kt, with gusts as high as 22 kt. Showers likely and possibly a thunderstorm before 9am, then showers likely between 9am and noon, then showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.
Thursday Night
E wind around 11 kt. Scattered showers, mainly before midnight. Seas 1 ft or less.
Friday
E wind 11 to 16 kt. Isolated showers. Widespread haze. Seas 1 ft or less.
Friday Night
E wind around 10 kt. Widespread haze. Seas 1 ft or less.
Saturday
ENE wind 11 to 14 kt, with gusts as high as 20 kt. Widespread haze. Seas 1 ft or less.
Saturday Night
E wind around 11 kt. Scattered showers. Seas 1 ft or less.
Sunday
ENE wind 12 to 15 kt. Scattered showers. Widespread haze before noon. Seas 1 ft or less.

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 65.99°W
Last Update: 2:31 am EDT Sep 9, 2026
Forecast Valid: 2am EDT Sep 9, 2026-6pm EDT Sep 15, 2026
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