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San Juan, PR Local Forecast Office

4NM NE San Juan PR

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Scattered showers, mainly after 3pm.   Seas 1 ft or less.

      High: 84 °F

      ⇑E 12kt
      < 1ft

    • Tonight

      Tonight:ESE wind 5 to 8 kt. Scattered showers, mainly before 9pm.   Seas 1 ft or less.

      Low: 75 °F

      ESE 8kt
      < 1ft

    • Saturday

      Saturday:S wind 6 to 9 kt. Isolated showers, then showers likely and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 87 °F

      S 9kt
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before midnight.   Seas 1 ft or less.

      Low: 75 °F

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming ESE 5 to 9 kt in the afternoon. Isolated showers, then showers likely and possibly a thunderstorm after noon.   Seas 1 ft or less.

      High: 87 °F

      ⇑ESE 9kt
      < 1ft

    • Sunday Night

      Sunday Night:S wind around 6 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm before midnight, then isolated showers.   Seas 1 ft or less.

      Low: 76 °F

      S 6kt⇓
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming ESE 5 to 9 kt in the morning. Showers likely, mainly after noon.   Seas 1 ft or less.

      High: 86 °F

      ⇑ESE 9kt
      < 1ft

    • Monday Night

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

      Low: 76 °F

      SE 7kt⇓
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming E 5 to 9 kt in the morning. Showers likely.   Seas 1 ft or less.

      High: 85 °F

      ⇑E 9kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:04 am EDT Apr 24, 2026
Forecast Valid: 6am EDT Apr 24, 2026-6pm EDT Apr 30, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Today
Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Scattered showers, mainly after 3pm. Seas 1 ft or less.
Tonight
ESE wind 5 to 8 kt. Scattered showers, mainly before 9pm. Seas 1 ft or less.
Saturday
S wind 6 to 9 kt. Isolated showers, then showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before midnight. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming ESE 5 to 9 kt in the afternoon. Isolated showers, then showers likely and possibly a thunderstorm after noon. Seas 1 ft or less.
Sunday Night
S wind around 6 kt becoming variable and less than 5 kt after midnight. Showers likely and possibly a thunderstorm before midnight, then isolated showers. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming ESE 5 to 9 kt in the morning. Showers likely, mainly after noon. Seas 1 ft or less.
Monday Night
SE 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 5 to 9 kt in the morning. Showers likely. 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: 4:04 am EDT Apr 24, 2026
Forecast Valid: 6am EDT Apr 24, 2026-6pm EDT Apr 30, 2026
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