Uruguay — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Uruguay. Learn about today’s conditions, monthly averages, and how the surrounding seas and oceans vary by season. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
- Punta del Este13°C
- Montevideo14°C
- Parque del Plata14°C
- Piriápolis14°C
- Balneario14°C
- Barra del Chuy13°C
- Bello Horizonte14°C
- San Luis14°C
- Costa Azul14°C
- Punta del Diablo13°C
- Martín Chico16°C
- Villa Argentina14°C
- Colonia del Sacramento16°C
- Barra de Carrasco14°C
- Aguas Dulces13°C
- Salinas14°C
- Guazuvira14°C
- La Tuna14°C
- Balneario Artilleros15°C
- Juan Lacaze15°C
- Carrasco14°C
- Bella Vista14°C
- Punta Ballena13°C
- Ciudad del Plata14°C
- Playa Verde14°C
- Manantiales13°C
- Blancarena15°C
- Pajas Blancas14°C
- Chihuahua13°C
- El Chorro13°C
- Puerto de Conchillas16°C
- Santa Regina15°C
- Punta Colorada13°C
- Santa Ana15°C
- Marindia14°C
- Solis14°C
- Sauce de Portezuelo13°C
- Fomento15°C
- Ciudad de la Costa14°C
- Cuchilla Alta14°C
Coastal Seas and Oceans
Water Temperature and Swimming Overview
Regions and Map
Water Temperature Trends
Uruguay’s coastline along the Atlantic Ocean and the broad estuary of the Río de la Plata experiences moderate sea temperatures that reflect its temperate, southern-hemisphere climate. In summer (December–February) sea surface temperatures typically range from about 20–24 °C (68–75 °F), with sheltered bays and shallow areas occasionally warming to around 25 °C (77 °F). During autumn and spring (March–May and September–November) waters are cooler, generally between 15–20 °C (59–68 °F) as the ocean transitions between seasons. Winter (June–August) brings the coldest seas, commonly around 11–14 °C (52–57 °F) and sometimes dipping toward 10 °C (50 °F) in exposed areas. Local variations occur depending on exposure, tides and currents, so different beaches can feel noticeably warmer or colder on the same day.
Swimming Conditions
Swimming is widely permitted and popular, especially in the warm months when beach infrastructure is active and lifeguards are on duty at major resorts like Punta del Este and Montevideo’s coastal beaches. Water quality is generally suitable for bathing at organized beaches, though conditions can change after heavy rains or in more industrialized stretches, so local advisories are sometimes issued. Outside the summer season many visitors and residents use wetsuits or limit swims because of cooler temperatures, and swimmers should always heed safety flags and warnings about currents and surf. Overall, Uruguay offers good seasonal swimming opportunities with the clearest comfort from late spring through early autumn.