Seychelles — Sea Water Temperature and Annual Ranges
Up-to-date sea water temperatures for the coasts of Seychelles. 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
Seychelles enjoys warm tropical seas year-round, making coastal waters inviting for swimming most of the time. Typical sea surface temperatures generally sit between about 25–29 °C (77–84 °F), with the warmest waters in the austral summer and early autumn (roughly November to April) and the coolest in the cooler, drier season (May to October). Peak warmth commonly occurs around February to April when surface temperatures can approach the upper end of that range, while August and September tend to bring marginally cooler readings. These modest seasonal shifts mean the water remains comfortably warm compared with temperate destinations, supporting extended swimming, snorkeling and other marine activities without the need for thermal protection.
Swimming Conditions
Swimming is widely permitted and popular along Seychelles’ many beaches, owing to the generally benign water temperatures and extensive sheltered bays and reef-protected lagoons. Conditions vary by island and exposure: leeward shores and inner reef lagoons are typically calm and ideal for casual swimmers, whereas windward coasts can become choppy during the southeast trade wind season, producing stronger currents and larger surf. Visitors should observe local advice about currents, reef hazards and any posted safety notices; lifeguards are not present at all beaches. The country’s clear, warm waters also support excellent snorkeling and diving around coral gardens, but swimmers should respect marine life and reef ecosystems to stay safe and preserve the environment.