When comparing temperatures, a lower numerical value on the Celsius scale indicates a colder temperature. Between -2 degrees Celsius and -8 degrees Celsius, -8°C is colder because it is further below zero on the temperature scale. The negative sign represents temperatures below freezing, and as the number decreases, the coldness increases.
In this case, -8°C is colder than -2°C because it is six degrees lower. This difference is significant when considering environmental or physical contexts, as colder temperatures can have a greater impact on living conditions, freezing points, or even personal comfort levels.