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San Juan, PR Marine Weather Forecast

Station SJNP4 - 9755371 - San Juan, La Puntilla, San Juan Bay, PR

March 21, 2026 3:30 am ADT
Location: 18.459N 66.116W
Wind Direction: SE (130°)
Wind Speed: 8.9 knots
Wind Gust: 11.1 knots
Atmospheric Pressure: 29.85 in (1010.8 mb)
Air Temperature: 77.0°F (25.0°C)
Water Temperature: 80.4°F (26.9°C)


Overnight - 76°F
Mar 21, 2026
6 mph SSE
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 76. South southeast wind around 6 mph. Chance of precipitation is 20%.
Saturday - 85°F
Mar 21, 2026
3 to 9 mph S
Chance Showers And Thunderstorms
Isolated rain showers between 9am and noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. South wind 3 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Saturday Night - 75°F
Mar 21, 2026
3 mph SSW
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a low around 75. South southwest wind around 3 mph. Chance of precipitation is 40%.
Sunday - 81°F
Mar 22, 2026
3 to 10 mph NW
Chance Showers And Thunderstorms
Scattered rain showers before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Northwest wind 3 to 10 mph. Chance of precipitation is 70%.
Sunday Night - 75°F
Mar 22, 2026
10 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a low around 75. Northeast wind around 10 mph. Chance of precipitation is 70%.
Monday - 80°F
Mar 23, 2026
13 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind around 13 mph. Chance of precipitation is 60%.
Monday Night - 76°F
Mar 23, 2026
10 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Northeast wind around 10 mph. Chance of precipitation is 60%.
Tuesday - 80°F
Mar 24, 2026
9 to 13 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Northeast wind 9 to 13 mph. Chance of precipitation is 60%.
Tuesday Night - 74°F
Mar 24, 2026
10 mph ENE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. East northeast wind around 10 mph. Chance of precipitation is 60%.
Wednesday - 81°F
Mar 25, 2026
9 to 14 mph E
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Wednesday Night - 76°F
Mar 25, 2026
12 mph E
Scattered Rain Showers
Scattered rain showers. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Thursday - 81°F
Mar 26, 2026
9 to 16 mph E
Scattered Rain Showers
Scattered rain showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Thursday Night - 76°F
Mar 26, 2026
10 to 16 mph E
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.
Friday - 82°F
Mar 27, 2026
12 to 16 mph E
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms. Partly sunny, with a high near 82.

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