Marine Weather and Tide Forecast for Aguas Claras, PR

.Short Term(This afternoon through Saturday)...
Issued at 102 PM AST Thu Nov 6 2025

Sunny to partly cloudy skies prevailed across Puerto Rico and the U.S. Virgin Islands today. Passing showers were observed at times across the local waters and over portions of the U.S. Virgin Islands and across eastern Puerto Rico during the morning hours. For this afternoon, shower and thunderstorm development is expected over western Puerto Rico, this activity may cause urban and small stream flooding. High temperatures were from the mid-80s to low-90s across the lower elevations of the islands to the upper 70s and mid-80s 90s across the higher elevations. The wind was from the east around 15 to 20 mph with gusts around 25 mph along coastal areas.

A mid-level ridge pattern will continue to dominate the region, though a gradual weakening is expected as an upper-level trough prevails south of the area. At the surface, a front north of the area will dissipate while a high-pressure system moves into the central Atlantic. This surface high will maintain an east-southeast wind flow, advecting patches of moisture across the islands from time to time, particularly during the nighttime, when showers are expected to move over the USVI and eastern PR. However, minor accumulations are expected in general; and locally induced afternoon showers are expected to develop across western Puerto Rico each day.

The prevailing east-southeast wind flow will support slightly above- normal temperatures at the 925 mb level, particularly on Friday.
These conditions mainly affect individuals who are highly sensitive to heat, especially those spending extended periods outdoors without proper cooling or hydration.

.Long Term(Sunday through next Thursday)...
Issued at 308 AM AST Thu Nov 6 2025

The inherited forecast remains unchanged. On Sunday, the main feature will be the presence of a tropical wave moving across the Caribbean waters, bringing a surge of deep tropical moisture over the region. Precipitable water values are forecast to increase to around 2.00 to 2.25 inches, which is above the climatological average for this time of year. In addition, the latest model guidance indicates that temperatures in the 500 mb layer will decrease to around -7 degrees Celsius, suggesting mid-level instability that will enhance vertical development of convection.
As a result, scattered to numerous showers and isolated thunderstorms are expected across the U.S. Virgin Islands and the eastern and southern portions of Puerto Rico, spreading inland throughout the day. With the combination of abundant moisture and instability, a limited to elevated flooding risk is possible, particularly across areas that experience persistent or heavy rainfall.

In the wake of the tropical wave, residual moisture will persist across the region, resulting in scattered showers and isolated thunderstorms throughout the day. Although overall instability will begin to decrease, the remaining moisture and local effects may still support localized flooding, particularly in the interior and western parts of Puerto Rico. Therefore, a limited flooding risk will persist into the beginning of the work week.

From Tuesday onward, a more typical weather pattern is expected to return as drier air and a strengthening mid-level ridge promote stability across the region. Under a southeasterly flow, expect passing showers across windward areas during the night and morning hours, followed by isolated to scattered afternoon showers and thunderstorms, mainly across western and northwestern Puerto Rico due to local and diurnal effects.

AVIATION
(18Z TAFS)
Issued at 102 PM AST Thu Nov 6 2025

Mainly VFR conditions are expected to prevail across all terminals during the next 24 hours. However, tempo MVFR conds are possible thru 22z at TJBQ due to locally induced SHRA/TSRA. The 06/12z TJSJ sounding indicated ESE winds up to 18 kt blo FL080.

MARINE
Issued at 102 PM AST Thu Nov 6 2025

A surface low moving across the northwestern Atlantic will generate a northerly swell, increasing seas to around 6 feet or higher across the Atlantic waters and local Caribbean passages tonight into Friday. Additionally, moderate to fresh easterly winds are anticipated by this weekend, along with a better chance of showers as a tropical wave moves across the Caribbean waters.
Small craft operators will likely need to exercise caution.

BEACH FORECAST
Issued at 308 AM AST Thu Nov 6 2025

A northerly swell will begin to build across the Atlantic waters and northern coastlines, causing seas to increase and the rip current risk to expand westward, including western Puerto Rico, Vieques, and the U.S. Virgin Islands, late today into Friday night. By Friday, a high risk of rip currents is expected for north and east-facing beaches of Puerto Rico, possibly adding Culebra, and the northern U.S. Virgin Islands later today, where life- threatening rip currents will be possible.

A few afternoon showers or isolated thunderstorms could develop near the coast, particularly across western Puerto Rico. If you hear thunder, move indoors immediately.

For the latest updates on coastal and marine conditions, visit weather.gov/beach/sju.

SJU WATCHES/WARNINGS/ADVISORIES
PR...High Rip Current Risk from Friday morning through late Friday night for PRZ001-002-005-008.

VI...None.
AM...None.