The tide gauge of Arrecife (Lanzarote) is located in the eastern part of the harbour and it measures the sea level from 1949 onwards.

This oceano-meteorological buoy was deployed on September 27, 2007, at the position 43º50'N 3º47'W, located 22 miles North of Cabo Mayor in Santander. Water depth at the buoy is 2850 meters. Parameters: - Sea water temperature at 3 m depth - Sea water slinity at 3 m depth - Air temperature - Relative humidity - Atmospheric pressure - Wind speed and direction - Waves (significant wave height, height, period and direction) - Currents at 9 m depth - Chlorophyll-a - Oxygen

The tide gauge of Santa Cruz de La Palma is located in the harbour and it measured the sea level from 1997 to 2018. This station replaced the previous one (PSMSL ID 585)

The tide gauge of Pasajes measured the sea level from 1948 to 1963.

The tide gauge of Palma de Mallorca is located in the eastern part of the harbour and it measures the sea level from 1964 to 1966. Note that another station (PSMSL ID 1892) was recording data from 1997 onwards in a near location.

The tidal gauge of Algeciras was located at the harbour and it measured sea level from 1943 to 2002. A new tide gauge (PSMSL ID 2117) replaced this stations with records from 2006 onwards.

The tide gauge of Palma de Mallorca is located in the western part of the harbour and it measures the sea level from 1997 onwards. Note that another station (PSMSL ID 1087) was recording data from 1964 to 1966 in a near location.

The tide gauge of Ceuta is located in the harbour and it measures the sea level from 1944 onwards.

The tidal gauge of Cádiz is currently located at the harbour and it measures the sea level from 1961 onwards.

The tidal gauge of Algeciras is located at the harbour and it measures sea level from November 2006 onwards. This station is a replacement gauge for the former Algeciras tide gauge (PSMSL ID 490) with records from 1943 to 2002.