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San Juan, PR Local Forecast Office

3NM NW San Juan PR

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:Variable winds 5 kt or less. Isolated showers between 9pm and midnight.   Seas around 3 ft.

      Low: 82 °F

      Light Wind
      3ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. Isolated showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm.   Seas around 3 ft.

      High: 85 °F

      ⇑ESE 11kt
      3ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Scattered showers, with thunderstorms also possible after midnight.   Seas around 4 ft.

      Low: 82 °F

      Light Wind
      4ft

    • Friday

      Friday: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 9am.   Seas 4 to 5 ft.

      High: 85 °F

      ⇑ESE 12kt
      4-5ft

    • Friday Night

      Friday Night:ESE wind 6 to 8 kt. Scattered showers and thunderstorms.   Seas 4 to 5 ft.

      Low: 82 °F

      ESE 8kt
      4-5ft

    • Saturday

      Saturday:ESE wind 5 to 10 kt. Showers likely, mainly after noon.   Seas around 4 ft.

      High: 85 °F

      ESE 10kt
      4ft

    • Saturday Night

      Saturday Night:SE wind around 7 kt. Partly cloudy. Seas around 4 ft.

      Low: 82 °F

      SE 7kt
      4ft

    • Sunday

      Sunday:ESE wind 6 to 12 kt. Scattered showers.   Seas around 4 ft.

      High: 85 °F

      ESE 12kt
      4ft

    • Sunday Night

      Sunday Night:SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 4 ft.

      Low: 82 °F

      SE 7kt⇓
      4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:22 pm EDT Oct 21, 2026
Forecast Valid: 8pm EDT Oct 21, 2026-6pm EDT Oct 28, 2026

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Detailed Forecast


Tonight
Variable winds 5 kt or less. Isolated showers between 9pm and midnight. Seas around 3 ft.
Thursday
Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. Isolated showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Seas around 3 ft.
Thursday Night
Variable winds 5 kt or less. Scattered showers, with thunderstorms also possible after midnight. Seas around 4 ft.
Friday
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 9am. Seas 4 to 5 ft.
Friday Night
ESE wind 6 to 8 kt. Scattered showers and thunderstorms. Seas 4 to 5 ft.
Saturday
ESE wind 5 to 10 kt. Showers likely, mainly after noon. Seas around 4 ft.
Saturday Night
SE wind around 7 kt. Partly cloudy. Seas around 4 ft.
Sunday
ESE wind 6 to 12 kt. Scattered showers. Seas around 4 ft.
Sunday Night
SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 4 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: 18.45°N 66.1°W
Last Update: 7:22 pm EDT Oct 21, 2026
Forecast Valid: 8pm EDT Oct 21, 2026-6pm EDT Oct 28, 2026
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