Marine Weather and Tide Forecast for Candelaria Arenas, PR

.Short Term(This evening through Sunday)...
Issued at 1256 PM AST Fri Oct 16 2026

Generally fair weather prevailed across the region as subsidence aloft limited shower activity over the islands. Cloudiness increased across the interior and downwind of the islands and mountains late morning into the afternoon. Some showers developed downwind from St. Croix away from the island, and from Culebra into eastern PR around noon. Easterly winds ranged from 5 to 15 mph, with higher gusts and local sea breeze variations. Coastal and urban temperatures ranged from the upper 80s to low 90s. These temperatures, combined with high humidity, resulted in heat indices of 100 to 107 degrees Fahrenheit.

A building ridge, subsidence aloft, and drier air intrusion will limit widespread convection across the islands this afternoon and most of the weekend. However, daytime heating, sea breeze convergence, and local terrain effects will support localized afternoon convection, mainly over interior and western Puerto Rico. A few showers may also develop downwind of St. Thomas, St.
Croix, Vieques, and Culebra. The flood threat will remain limited for interior and western PR, with ponding on roads and in poorly drained areas possible under heavier showers; isolated urban and small-stream flooding also cannot be ruled out. Elsewhere across Puerto Rico and the U.S. Virgin Islands, prevailing easterly winds may carry brief, passing showers. This advective pattern will continue overnight into early Saturday morning, with brief, passing showers affecting mainly windward areas, while leeward locations can expect mostly clear skies.

Model guidance suggests that a mid- to upper-level ridge will build over the region through the weekend, promoting subsidence and limiting deep convection. Surface winds will gradually shift to the east-southeast on Saturday and remain east-southeasterly on Sunday. This flow will occasionally carry passing showers over windward portions of Puerto Rico and the U.S. Virgin Islands.
During the afternoons, daytime heating and local convergence may support localized convection across interior, northern, and northwestern Puerto Rico, as well as downwind of the U.S. Virgin Islands. Moisture is expected to increase somewhat on Sunday, potentially supporting greater shower coverage. However, persistent subsidence and limited large-scale forcing should inhibit widespread convective development.

.Long Term(Monday through Friday)...
Issued at 344 AM AST Fri Oct 16 2026

A weak mid-level ridge will shift westward by Sunday as a deep mid- to-upper-level low develops over the central North Atlantic.
Marginally unstable conditions will prevail through early next week, with convection primarily driven by diurnal heating and local effects. Below-normal mid-level moisture and relatively weak lapse rates should limit convective coverage and intensity. By midweek, uncertainty increases as models suggest possible low-pressure development over the western Caribbean, potentially influencing regional moisture and steering flow. However, NHC currently does not anticipate tropical cyclone formation, and confidence remains low in any substantial moisture increase or organized rainfall event.

Limited excessive rainfall and lightning risks will decrease through the weekend and remain relatively low early next week, with afternoon showers and isolated thunderstorms mainly across interior and western Puerto Rico. Some increase in convective activity remains possible by midweek, although this will depend on moisture availability and the evolving synoptic pattern. A limited heat risk will persist across the islands, particularly during the late morning and early afternoon before convective development. All three hazard risks are expected to remain limited throughout the period.

AVIATION
(18Z TAFS)
Issued at 1256 PM AST Fri Oct 16 2026

VFR conds will cont across all TAF sites, with mainly VCSH throughout the prd. Aftn convt may bring VCSH over JBQ and JPS, slgtly reducing CIGs /VIS through 16/21z. Winds from the E-ENE will cont this aft btwn 10 - 15 kt, gusts up to 25 kt, weakening and becoming light and VRB by 16/22-23z. Wind should strengthen from the E-ESE btwn 10 - 15 kt by 17/13z. Although the likelihood of -TSRA/TSRA is low tda, AMDs will be issued if required.

MARINE
Issued at 1256 PM AST Fri Oct 16 2026

Easterly winds will gradually shift to the east-southeast this weekend. A building upper-level ridge will limit widespread shower and thunderstorm activity, although occasional passing showers will affect the regional waters. A small northeasterly swell will begin arriving this afternoon, affecting mainly the Atlantic waters and exposed passages. A more energetic northerly swell is expected to arrive late Monday night into Tuesday and persist through midweek, resulting in building seas.

BEACH FORECAST
Issued at 1256 PM AST Fri Oct 16 2026

A northeasterly swell arriving late tonight into Saturday will increase the risk of rip currents along exposed north- and northeast-facing beaches of Puerto Rico and the U.S. Virgin Islands. A more energetic northwesterly swell arriving late Monday into Tuesday will likely produce stronger rip currents and higher surf along exposed beaches, particularly across northern and northwestern Puerto Rico, with hazardous conditions potentially persisting through midweek.

SJU WATCHES/WARNINGS/ADVISORIES
PR...None.
VI...None.
AM...None.