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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:E wind 12 to 15 kt. Scattered showers, mainly between midnight and 3am.   Seas 4 to 5 ft.

      Low: 78 °F

      E 15kt
      4-5ft

      Small Craft Advisory
      Small Craft Advisory

    • Memorial Day

      Memorial Day:E wind 16 to 20 kt, with gusts as high as 29 kt. Isolated showers before noon, then isolated showers after 3pm.   Seas around 5 ft.

      High: 83 °F

      E 20kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:E wind 10 to 20 kt, with gusts as high as 29 kt. Scattered showers after 9pm.   Seas around 5 ft.

      Low: 78 °F

      E 20kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:E wind 12 to 17 kt, with gusts as high as 23 kt. Scattered showers, then showers likely and possibly a thunderstorm after noon.   Seas around 5 ft.

      High: 82 °F

      E 17kt
      5ft

    • Tuesday Night

      Tuesday Night:E wind 7 to 9 kt. Scattered showers.   Seas 4 to 5 ft.

      Low: 78 °F

      E 9kt
      4-5ft

    • Wednesday

      Wednesday:E wind 7 to 15 kt, with gusts as high as 21 kt. Scattered showers, mainly after noon.   Seas around 4 ft.

      High: 84 °F

      E 15kt
      4ft

    • Wednesday Night

      Wednesday Night:ESE wind around 9 kt. Partly cloudy. Seas 3 to 4 ft.

      Low: 78 °F

      ESE 9kt
      3-4ft

    • Thursday

      Thursday:E wind 9 to 15 kt. Scattered showers.   Seas around 4 ft.

      High: 85 °F

      E 15kt
      4ft

    • Thursday Night

      Thursday Night:SE wind 6 to 8 kt. Scattered showers.   Seas around 3 ft.

      Low: 78 °F

      SE 8kt
      3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:06 pm EDT May 24, 2026
Forecast Valid: 6pm EDT May 24, 2026-6pm EDT May 31, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE MONDAY NIGHT...

Tonight
E wind 12 to 15 kt. Scattered showers, mainly between midnight and 3am. Seas 4 to 5 ft.
Memorial Day
E wind 16 to 20 kt, with gusts as high as 29 kt. Isolated showers before noon, then isolated showers after 3pm. Seas around 5 ft.
Monday Night
E wind 10 to 20 kt, with gusts as high as 29 kt. Scattered showers after 9pm. Seas around 5 ft.
Tuesday
E wind 12 to 17 kt, with gusts as high as 23 kt. Scattered showers, then showers likely and possibly a thunderstorm after noon. Seas around 5 ft.
Tuesday Night
E wind 7 to 9 kt. Scattered showers. Seas 4 to 5 ft.
Wednesday
E wind 7 to 15 kt, with gusts as high as 21 kt. Scattered showers, mainly after noon. Seas around 4 ft.
Wednesday Night
ESE wind around 9 kt. Partly cloudy. Seas 3 to 4 ft.
Thursday
E wind 9 to 15 kt. Scattered showers. Seas around 4 ft.
Thursday Night
SE wind 6 to 8 kt. Scattered showers. Seas around 3 ft.

*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: 18.46°N 66.13°W
Last Update: 4:06 pm EDT May 24, 2026
Forecast Valid: 6pm EDT May 24, 2026-6pm EDT May 31, 2026
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