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San Juan, PR Local Forecast Office

4NM NE San Juan PR

Marine Point Forecast

[NOTICE]
    • Today

      Today:S wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Scattered showers, mainly after 3pm.   Seas 1 ft or less.

      High: 86 °F

      S 8kt⇓
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Scattered showers before midnight.   Seas 1 ft or less.

      Low: 75 °F

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. Showers likely and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 89 °F

      ⇑ESE 11kt
      < 1ft

    • Sunday Night

      Sunday Night:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before midnight, then scattered showers.   Seas 1 ft or less.

      Low: 76 °F

      Light Wind
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming ESE 7 to 12 kt in the morning. Scattered showers and thunderstorms, then showers and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 86 °F

      ⇑ESE 12kt
      < 1ft

    • Monday Night

      Monday Night:Variable winds 5 kt or less. Scattered showers.   Seas 1 ft or less.

      Low: 77 °F

      Light Wind
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. Showers likely.   Seas 1 ft or less.

      High: 85 °F

      ⇑E 7kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds 5 kt or less. Showers likely.   Seas 1 ft or less.

      Low: 76 °F

      Light Wind
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Scattered showers.   Seas 1 ft or less.

      High: 86 °F

      ⇑E 10kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:11 am EDT Apr 25, 2026
Forecast Valid: 11am EDT Apr 25, 2026-6pm EDT May 1, 2026

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Detailed Forecast


Today
S wind 5 to 8 kt becoming variable and less than 5 kt in the afternoon. Scattered showers, mainly after 3pm. Seas 1 ft or less.
Tonight
Variable winds 5 kt or less. Scattered showers before midnight. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. Showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.
Sunday Night
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before midnight, then scattered showers. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming ESE 7 to 12 kt in the morning. Scattered showers and thunderstorms, then showers and possibly a thunderstorm after noon. Seas 1 ft or less.
Monday Night
Variable winds 5 kt or less. Scattered showers. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming E 5 to 7 kt in the afternoon. Showers likely. Seas 1 ft or less.
Tuesday Night
Variable winds 5 kt or less. Showers likely. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming E 5 to 10 kt in the morning. Scattered showers. Seas 1 ft or less.

*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: 3:11 am EDT Apr 25, 2026
Forecast Valid: 11am EDT Apr 25, 2026-6pm EDT May 1, 2026
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