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San Juan, PR Local Forecast Office

4NM NE San Juan PR

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:E wind around 11 kt. Showers likely and possibly a thunderstorm before 3pm, then scattered showers.   Seas 1 ft or less.

      High: 87 °F

      E 11kt
      < 1ft

    • Tonight

      Tonight:ESE wind around 10 kt. Showers likely and possibly a thunderstorm before midnight, then scattered showers between midnight and 3am, then showers likely and possibly a thunderstorm after 3am.   Seas 1 ft or less.

      Low: 77 °F

      ESE 10kt
      < 1ft

    • Sunday

      Sunday:E wind 7 to 14 kt, with gusts as high as 20 kt. Showers likely, mainly before 9am.   Seas 1 ft or less.

      High: 88 °F

      E 14kt
      < 1ft

    • Sunday Night

      Sunday Night:ESE wind around 8 kt. Scattered showers, mainly after midnight.   Seas 1 ft or less.

      Low: 78 °F

      ESE 8kt
      < 1ft

    • Columbus Day

      Columbus Day:E wind 9 to 13 kt. Scattered showers, with thunderstorms also possible after noon.   Seas 1 ft or less.

      High: 88 °F

      E 13kt
      < 1ft

    • Monday Night

      Monday Night:E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Scattered showers.   Seas 1 ft or less.

      Low: 78 °F

      E 7kt⇓
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming E around 6 kt in the afternoon. Scattered showers.   Seas 1 ft or less.

      High: 88 °F

      ⇑E 6kt
      < 1ft

    • Tuesday Night

      Tuesday Night:Variable winds less than 5 kt becoming E 8 to 13 kt in the evening. Scattered showers.   Seas 1 ft or less.

      Low: 78 °F

      ⇑E 13kt
      < 1ft

    • Wednesday

      Wednesday:E wind 8 to 10 kt. Scattered showers.   Seas 1 ft or less.

      High: 88 °F

      E 10kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:42 pm EDT Oct 10, 2026
Forecast Valid: 2pm EDT Oct 10, 2026-6pm EDT Oct 16, 2026

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Detailed Forecast


This Afternoon
E wind around 11 kt. Showers likely and possibly a thunderstorm before 3pm, then scattered showers. Seas 1 ft or less.
Tonight
ESE wind around 10 kt. Showers likely and possibly a thunderstorm before midnight, then scattered showers between midnight and 3am, then showers likely and possibly a thunderstorm after 3am. Seas 1 ft or less.
Sunday
E wind 7 to 14 kt, with gusts as high as 20 kt. Showers likely, mainly before 9am. Seas 1 ft or less.
Sunday Night
ESE wind around 8 kt. Scattered showers, mainly after midnight. Seas 1 ft or less.
Columbus Day
E wind 9 to 13 kt. Scattered showers, with thunderstorms also possible after noon. Seas 1 ft or less.
Monday Night
E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Scattered showers. Seas 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming E around 6 kt in the afternoon. Scattered showers. Seas 1 ft or less.
Tuesday Night
Variable winds less than 5 kt becoming E 8 to 13 kt in the evening. Scattered showers. Seas 1 ft or less.
Wednesday
E wind 8 to 10 kt. Scattered showers. 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: 1:42 pm EDT Oct 10, 2026
Forecast Valid: 2pm EDT Oct 10, 2026-6pm EDT Oct 16, 2026
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