Constellations are not physical objects with a surface temperature. They are patterns of stars that appear close together in the sky from our perspective on Earth. Each star within a constellation has its own individual temperature, which can vary greatly depending on its size, age, and type.

Therefore, there's no single surface temperature for the constellation Lupus.

If you're interested in the temperature of a specific star within Lupus, you'll need to specify the star's name.