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San Juan, PR Local Forecast Office

4NM NE San Juan PR

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:ESE wind around 11 kt. Scattered showers, with thunderstorms also possible after 3pm.   Seas 1 ft or less.

      High: 86 °F

      ESE 11kt
      < 1ft

    • Tonight

      Tonight:SE wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers and thunderstorms before 9pm, then isolated showers after midnight.   Seas 1 ft or less.

      Low: 80 °F

      SE 6kt⇓
      < 1ft

    • Friday

      Friday:E wind 8 to 13 kt. Isolated showers before 9am, then scattered showers after noon.   Seas 1 ft or less.

      High: 88 °F

      E 13kt
      < 1ft

    • Friday Night

      Friday Night:ESE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Isolated showers.   Seas 1 ft or less.

      Low: 81 °F

      ESE 7kt⇓
      < 1ft

    • Saturday

      Saturday:ESE wind 6 to 12 kt. Isolated showers after noon.   Seas 1 ft or less.

      High: 88 °F

      ESE 12kt
      < 1ft

    • Saturday Night

      Saturday Night:ESE wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Isolated showers.   Seas 1 ft or less.

      Low: 81 °F

      ESE 8kt⇓
      < 1ft

    • Sunday

      Sunday:E wind 6 to 13 kt. Scattered showers.   Seas 1 ft or less.

      High: 88 °F

      E 13kt
      < 1ft

    • Sunday Night

      Sunday Night:ESE wind 7 to 9 kt. Partly cloudy. Seas 1 ft or less.

      Low: 80 °F

      ESE 9kt
      < 1ft

    • Monday

      Monday:E wind 9 to 14 kt. Scattered showers.   Seas 1 ft or less.

      High: 87 °F

      E 14kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:32 am EDT Sep 24, 2026
Forecast Valid: 1pm EDT Sep 24, 2026-6pm EDT Sep 30, 2026

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Detailed Forecast


This Afternoon
ESE wind around 11 kt. Scattered showers, with thunderstorms also possible after 3pm. Seas 1 ft or less.
Tonight
SE wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers and thunderstorms before 9pm, then isolated showers after midnight. Seas 1 ft or less.
Friday
E wind 8 to 13 kt. Isolated showers before 9am, then scattered showers after noon. Seas 1 ft or less.
Friday Night
ESE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Isolated showers. Seas 1 ft or less.
Saturday
ESE wind 6 to 12 kt. Isolated showers after noon. Seas 1 ft or less.
Saturday Night
ESE wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Isolated showers. Seas 1 ft or less.
Sunday
E wind 6 to 13 kt. Scattered showers. Seas 1 ft or less.
Sunday Night
ESE wind 7 to 9 kt. Partly cloudy. Seas 1 ft or less.
Monday
E wind 9 to 14 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: 3:32 am EDT Sep 24, 2026
Forecast Valid: 1pm EDT Sep 24, 2026-6pm EDT Sep 30, 2026
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