Hey there, @Kostas!
These temperatures are within the normal operating limits. The maximum operating temperature of the WD Blue drive is 60C. You can see more about the environmental specifications of the hard drive on
the specs sheet here.
Always remember to backup your data to, at least, one more location (storage drive/device). This is the surest way to avoid any potential data loss.
Let me know if you have any other questions. Hope this was helpful.
Cheers,
SuperSoph_WD