Benin — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Benin. 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
Benin’s short Atlantic coastline sits on the Bight of Benin, where sea temperatures remain fairly warm throughout the year. Typical surface water temperatures range roughly from about 24–30 °C (75–86 °F). The coolest period tends to be during the late dry season and the early part of the rainy season, roughly December to February, when coastal waters are nearer the lower end of that range. From March through October, especially in the height of the rainy and warmer months, temperatures commonly climb toward the upper end, around 28–30 °C (82–86 °F). Seasonal variation is modest compared with temperate zones, so the sea feels pleasantly warm for most of the year, though short-term changes can occur with weather patterns, winds and coastal currents.
Swimming Conditions
Swimming is generally possible along Benin’s beaches and around resort areas, and the warm water temperatures make the coast inviting for bathing, snorkeling and other nearshore activities. However, conditions vary by spot: some beaches are informal with limited safety infrastructure, so lifeguards and marked swimming zones are often absent. Water quality can be affected near river mouths and urban runoff, particularly close to Cotonou and lagoon outlets, so locals and visitors are advised to avoid swimming after heavy rains and to follow any local guidance. Rip currents, changing tides and occasional strong surf can present hazards in exposed areas, so choosing sheltered stretches, swimming with companions and checking local advice improve safety. In short, the Beninese coast offers year-round warm-water swimming, but attention to local conditions and basic precautions is important.