Costa Rica’s Caribbean and North Pacific coasts are bracing for significantly rougher sea conditions this weekend. Marine experts urge swimmers and small craft operators to exercise extra caution as strengthening trade winds drive wave heights up to 2.7 meters (nearly 9 feet) in exposed areas.

What Is Causing the Rough Seas?

According to Rodney Mora, an oceanographer with the Oceanographic Information Module at the University of Costa Rica (MIO-Cimar), the main driver behind the sudden surge in wave activity is a seasonal ramp-up in trade winds across the region.

In addition, the National Meteorological Institute (IMN) forecasts maximum wind gusts across the country ranging between 30 and 60 km/h (18 to 37 mph), further agitating surface waters along exposed coastlines.

“We are going to experience an increase in trade winds, which will also drive higher surf, mainly in the Caribbean and North Pacific,” Mora stated.

Regional Breakdown: What to Expect at the Beach

Area-by-Area Weather & Wave Forecast

1. Caribbean Coast: Escalating Through Sunday

Average wave heights in the Caribbean hovered around 1.5 meters during the week. However, building trade winds will push waves past the 2-meter mark on Saturday and Sunday.

• Peak Heights: Up to 2.5 meters.
• Impact: Increased rip currents and rough shore-breaks along east-facing beaches.

2. North Pacific & Gulf of Papagayo: Rough Seas Offshore

The largest waves of the weekend will concentrate offshore in the North Pacific, particularly surrounding the Gulf of Papagayo. Strong trade winds in this sector will merge with incoming southern swells, amplifying overall wave energy.

• Peak Heights: Up to 2.7 meters.
• Impact: Hazardous choppy waters for small vessels, sportfishing boats, and coastal navigation.

3. Central and South Pacific: Calm Conditions

For beachgoers seeking calm waters, the Central and South Pacific offer much milder conditions. Stretching from Punta Guiones down to Punta Burica, average waves will remain around 1 meter, topping out near 1.4 meters. Marine experts classify these conditions as very favorable for swimming and standard boating.

Safety Recommendations for Beachgoers and Boaters

f you plan to visit the coast or head out onto the water this weekend, keep these safety practices in mind:

1. Small Vessel Navigation: Captains of small boats and pangas in the North Pacific and Caribbean should check local maritime advisories before setting sail.
2. Beachgoers & Swimmers: Look out for red flags or local safety warnings regarding rip currents along Caribbean beaches.
3. Monitor Local Shifts: Weather conditions can change rapidly. Marine state is only one variable—unexpected rain showers or localized wind squalls can alter sea conditions without much notice.

Stay informed by checking real-time updates from IMN and MIO-Cimar throughout the weekend.

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