Guinea — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Guinea. 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
Coastal Seas and Oceans
Water Temperature and Swimming Overview
Regions and Map
Water Temperature Trends
Guinea’s Atlantic coast offers warm tropical seawater that makes swimming possible throughout the year. Sea surface temperatures typically range from about 23 to 29 °C (73 to 84 °F) depending on the season and local conditions. The coolest months are usually January and February, when waters hover around 23–25 °C (73–77 °F), while the warmest period tends to be late summer into early autumn, roughly August to October, with temperatures often between 27 and 29 °C (81–84 °F). These moderate seasonal shifts mean the ocean is generally comfortable for bathing and recreational swimming without the need for wetsuits.
Swimming Conditions
Swimming along Guinea’s coast is allowed and commonly practiced at popular beaches, but conditions vary and visitors should be cautious. The rainy season, from roughly May to October, can bring heavier surf, stronger currents and increased runoff from rivers, which may reduce water quality near estuaries and urban outflows. During the drier months the sea is often calmer and clearer, yet many beaches lack formal lifeguard services and signage, so swimmers should heed local advice, watch for rip currents and avoid entering the water after heavy rains. Marine hazards such as submerged rocks in some bays and occasional jellyfish may be present. Overall, the warm sea temperatures support year-round swimming, provided one takes standard coastal safety precautions and observes local warnings.