This paper aims to provide insights into the evolving dynamics of sound propagation in the High North sea region, influenced by climate change. Leveraging the high resolution Hadley Centre Global Environment Model version 3 (HadGEM3- GC31-HH), we project monthly sound speed profiles (SSPs) up to the year 2050 southwest of the Svalbard Islands, in an area of 40 km range and an average depth of 2200 m. Subsequently, these SSPs are incorporated into an acoustic ray theory simulator to calculate the underwater acoustic transmission loss (UATL) for a 5 kHz frequency for numerous transmitter and receiver depths. Our analysis focuses on contrasting past and future trends by examining two distinct 30-year periods: 1981-2010 and 2021- 2050. We focus on identifying transmitter depths that minimize UATL for three specific receiver depths: 100 m, 500 m, and 1100 m. Furthermore, the study examines UATL trends between these periods, highlighting particular months that may exhibit potential for enhanced telemetry performance in the years to come.