Mauritius — Sea Water Temperature and Annual Ranges

Sea Water Temperature Along the Coast

Places with the Warmest Sea Water Today

The Most Popular Seaside Places

Coastal Seas and Oceans

Water Temperature and Swimming Overview

Water Temperature Trends

Mauritius enjoys warm Indian Ocean waters that make swimming pleasant for most of the year. Sea surface temperatures typically range from about 22–29 °C (72–84 °F), with the warmest months from November through April when temperatures commonly sit between 26–29 °C (79–84 °F). The coolest period runs roughly from May to October, when water temperatures fall to about 22–25 °C (72–77 °F). Sheltered lagoons and reef-protected bays often feel warmer and calmer than the exposed southern and eastern coasts, where deeper or wind-driven water can be a few degrees cooler. These seasonal differences are modest compared with temperate climates, so swimming remains comfortable year-round for most visitors.

Swimming Conditions

Swimming is widely permitted and routinely enjoyed across Mauritius, especially in the many reef-protected lagoons and resort beaches that offer gentle conditions ideal for families and snorkelers. However, conditions can become hazardous at times; the southeast trade winds and winter swells (May–October) can produce stronger currents and surf along exposed shorelines, so swimmers should favor sheltered beaches or patrolled areas and heed local advisories. Lifeguards are not universally present, so exercising caution, checking tide and weather information, and asking local operators about safe entry points is advisable. Beyond casual swimming, the warm waters support excellent snorkeling and diving around coral reefs and are a year-round draw for water-based activities.