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San Juan, PR Local Forecast Office

6NM SSW Mayaguez PR

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 90 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:E wind 5 to 7 kt. Showers likely and possibly a thunderstorm before 9pm, then scattered showers and thunderstorms between 9pm and midnight.   Seas 1 ft or less.

      Low: 75 °F

      E 7kt
      < 1ft

    • Sunday

      Sunday:ESE wind 6 to 8 kt. Isolated showers before 9am, then showers likely and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 90 °F

      ESE 8kt
      < 1ft

    • Sunday Night

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

      Low: 77 °F

      ESE 8kt
      < 1ft

    • Monday

      Monday:SE wind 7 to 9 kt. Showers and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 91 °F

      SE 9kt
      < 1ft

    • Monday Night

      Monday Night:E wind around 8 kt. Scattered showers and thunderstorms before midnight.   Seas 1 ft or less.

      Low: 77 °F

      E 8kt
      < 1ft

    • Tuesday

      Tuesday:E wind 5 to 7 kt becoming SE in the afternoon. Scattered showers after noon.   Seas 1 ft or less.

      High: 91 °F

      E 7kt
      < 1ft

    • Tuesday Night

      Tuesday Night:E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      Low: 75 °F

      E 7kt⇓
      < 1ft

    • Wednesday

      Wednesday:E wind around 6 kt becoming S in the afternoon. Scattered showers.   Seas 1 ft or less.

      High: 91 °F

      SE 6kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:49 am EDT Sep 19, 2026
Forecast Valid: 9am EDT Sep 19, 2026-6pm EDT Sep 25, 2026

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Detailed Forecast


Today
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.
Tonight
E wind 5 to 7 kt. Showers likely and possibly a thunderstorm before 9pm, then scattered showers and thunderstorms between 9pm and midnight. Seas 1 ft or less.
Sunday
ESE wind 6 to 8 kt. Isolated showers before 9am, then showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.
Sunday Night
ESE wind around 8 kt. Scattered showers before midnight. Seas 1 ft or less.
Monday
SE wind 7 to 9 kt. Showers and possibly a thunderstorm after noon. Seas 1 ft or less.
Monday Night
E wind around 8 kt. Scattered showers and thunderstorms before midnight. Seas 1 ft or less.
Tuesday
E wind 5 to 7 kt becoming SE in the afternoon. Scattered showers after noon. Seas 1 ft or less.
Tuesday Night
E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Wednesday
E wind around 6 kt becoming S in the afternoon. 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: 18.12°N 67.18°W
Last Update: 4:49 am EDT Sep 19, 2026
Forecast Valid: 9am EDT Sep 19, 2026-6pm EDT Sep 25, 2026
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