with the highest precipitation values being in January to March, and the minimum from August to November. The highest amounts of rainfall occur in March and the lowest in September (Caudmont and Maitrepierre, 2007). The seasonal salinity signal is more pronounced at 0 m than at 30 m (Fig. 7) and shows a reasonably steady increase from February–March (mean minimum salinity: 35.4 psu) to October (mean maximum: 35.8 psu).