San juan
NOAA CO-OPS station 9755371
Observed , 21 minutes ago
Hazardous
Today
Light NW winds at 4 kn gusting to 8 kn. Water 86°F, air 87°F. Today: West winds around 5 knots.
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Speed
4.5kn
Gust
8.2kn
Direction
312° NW
Trend
Steady
Last 12 hours0.4 to 5.4 kn
Water Level
1.5ft
Datum
MLLW
Last 12 hours0.8 to 2.5 ft
Air temp
87°F
77 to 87°F today
Water temp
86°F
85 to 86°F today
Pressure
1014mbar
Tendency
Easing
3 hour change
-1 mbar
Last 12 hours1012 to 1015 mbar
Zone forecast
Today
West winds around 5 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave detail: north 5 feet at 11 seconds. Isolated showers late this morning. Scattered showers with isolated thunderstorms early this afternoon, then isolated showers late.
Tonight
Southeast winds around 5 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave detail: north 5 feet at 11 seconds. Scattered showers in the evening.
Monday
Southeast winds around 5 knots, becoming east in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: northeast 5 feet at 10 seconds. Scattered showers in the afternoon.
Synopsis
A low-pressure northeast of the region will continue moving eastward over the next few days, while high pressure builds across the western Atlantic. Light to moderate westerly to southwesterly winds today will become variable tonight, then gradually shift to a more easterly direction early this week. A northerly to northeasterly swell will peak today through tonight, maintaining hazardous conditions near exposed Atlantic coastal waters. Although seas will remain below Small Craft Advisory criteria, the longer-period swell will produce locally rough conditions, particularly across the offshore Atlantic waters. The northeasterly swell will gradually subside on Monday, with improving marine conditions expected thereafter. Showers and isolated thunderstorms will remain possible across the regional waters through midweek.
NWS zone Coastal Waters of Northern Puerto Rico out 10 NM
Last 24 hours
Every 3 hours, over the last 12 hours. Air 77 to 87°F, water 85 to 86°F, pressure 1,012 to 1,015 mbar over the same window.
2 stations within 30 NM
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Buoycast Pro lets you set your own limits on wind, waves or pressure and sends a threshold notification when this station crosses them.
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Watches, warnings, and advisories for Coastal Waters of Northern Puerto Rico out 10 NM appear alongside the conditions, here and in the app. Pro also pushes NOAA watches, warnings, and advisories when they are issued.
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Station 9755371
18°27'32" N 66°06'58" W
Measured by 400+ NOAA CO-OPS stations. Observations from the Center for Operational Oceanographic Products and Services, forecasts and advisories from the National Weather Service. Not for navigation.