Sierra Leone — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Sierra Leone. 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
Sierra Leone’s Atlantic coastline enjoys warm tropical seawater that remains inviting for most of the year. Sea surface temperatures typically range from about 25–27 °C (77–81 °F) during the slightly cooler months of December to February, rising to roughly 27–30 °C (81–86 °F) through March to November with the warmest values often occurring in the mid- to late rainy season. Because the ocean here is influenced by the Guinea Current and the region’s equatorial location, seasonal variation is modest, so swimmers will generally find the water comfortably warm year-round.
Swimming Conditions
Swimming is commonly practiced along popular beaches near Freetown and in coastal communities, and the warm temperatures make casual bathing, snorkeling and other water recreation possible in all seasons. However, safety and water quality vary with location and weather. The rainy season and periods of strong onshore winds can generate heavy surf and dangerous rip currents, and urban or estuarine areas may experience pollution after runoff, so lifeguards are not always present and caution is advised. Visitors should choose monitored beaches when available, heed local advice about currents and storms, and avoid swimming near river mouths after heavy rain. Overall, the sea off Sierra Leone is thermally suitable for swimming year-round, with seasonal conditions determining how safe and pleasant the experience will be.