Abstract: The data included in this dataset were collected in Sermilik Fjord, located in East Greenland in the Ammassalik district close to the town of Tasiilaq. Data collection was conducted by deploying six moorings from August 2011 to September 2012. The seven moorings were named CM1SF5, CM2SF6, OE1, OW1, SF1, SF3, and SF4. Mooring CM1SF5 was located mid-fjord at a depth of 129 meters and was equipped with an SBE MicroCAT. Mooring CM2SF6 was located next to CM1SF5 at a depth of 265 meters. It was equipped with an SBE MicroCAT. Two moorings were positioned outside the fjord, OE1 was located on the east side of the fjord entrance at a depth of 255 meters and OW1 was located on the west side at a depth of 252 meters. Mooring OE1 was equipped with an RBR DR-150 Depth Recorder, five Onset UTBI-001 TidbiT Temperature Loggers, and an RBR XR-420 CTD. Mooring OW1 was outfitted with only an SBE MicroCAT. Mooring SF1 was located at the north end of the fjord at a depth of 630 meters. Data recovered from this mooring included three SBE MicroCAT and an RDI ADCP. Mooring SF3 was positioned near the glacier at a depth of 15 meters and was outfitted with an SBE MicroCAT and an Onset UTBI-001 Tidbit Temperature Logger. Mooring SF4 was positioned in the middle of the fjord at a depth of 860 meters. Data collected from this mooring included two RBR XR-420s, five Onset UTBI-001 Temperature Loggers, one SBE MicroCAT, and an RDI ADCP.