Taking measurements. (IMAGE) University of Tokyo Caption Temperatures underwater are kept relatively stable and warm at around 1-4 degrees Celsius, thanks to the blanket of ice and snow. Above ground, however, they vary from minus 18 degrees to 1 degree Celsius. Credit 2022 Asami Fujita Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.