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San Juan, PR Local Forecast Office

4NM NW San Juan PR

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NNE wind around 9 kt. Showers likely.   Seas around 5 ft.

      High: 85 °F

      NNE 9kt
      5ft

    • Tonight

      Tonight:NE wind around 8 kt. Scattered showers, mainly after midnight.   Seas around 5 ft.

      Low: 77 °F

      NE 8kt
      5ft

    • Monday

      Monday:NE wind around 11 kt. Scattered showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers and thunderstorms after 3pm.   Seas 4 to 5 ft.

      High: 85 °F

      NE 11kt
      4-5ft

    • Monday Night

      Monday Night:ENE wind 5 to 7 kt. Showers likely, mainly between 9pm and midnight.   Seas around 4 ft.

      Low: 77 °F

      ENE 7kt
      4ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. Showers likely.   Seas around 4 ft.

      High: 85 °F

      ⇑ENE 9kt
      4ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Scattered showers.   Seas around 4 ft.

      Low: 77 °F

      Light Wind
      4ft

    • Wednesday

      Wednesday:E wind 6 to 14 kt, with gusts as high as 20 kt. Scattered showers.   Seas around 4 ft.

      High: 85 °F

      E 14kt
      4ft

    • Wednesday Night

      Wednesday Night:ESE wind 7 to 9 kt. Scattered showers.   Seas around 4 ft.

      Low: 77 °F

      ESE 9kt
      4ft

    • Thursday

      Thursday:E wind 8 to 16 kt, with gusts as high as 22 kt. Scattered showers.   Seas around 4 ft.

      High: 85 °F

      E 16kt
      4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:06 pm EDT Mar 22, 2026
Forecast Valid: 1pm EDT Mar 22, 2026-6pm EDT Mar 28, 2026

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Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

This Afternoon
NNE wind around 9 kt. Showers likely. Seas around 5 ft.
Tonight
NE wind around 8 kt. Scattered showers, mainly after midnight. Seas around 5 ft.
Monday
NE wind around 11 kt. Scattered showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers and thunderstorms after 3pm. Seas 4 to 5 ft.
Monday Night
ENE wind 5 to 7 kt. Showers likely, mainly between 9pm and midnight. Seas around 4 ft.
Tuesday
Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. Showers likely. Seas around 4 ft.
Tuesday Night
Variable winds 5 kt or less. Scattered showers. Seas around 4 ft.
Wednesday
E wind 6 to 14 kt, with gusts as high as 20 kt. Scattered showers. Seas around 4 ft.
Wednesday Night
ESE wind 7 to 9 kt. Scattered showers. Seas around 4 ft.
Thursday
E wind 8 to 16 kt, with gusts as high as 22 kt. Scattered showers. Seas around 4 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: 18.46°N 66.13°W
Last Update: 1:06 pm EDT Mar 22, 2026
Forecast Valid: 1pm EDT Mar 22, 2026-6pm EDT Mar 28, 2026
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