It varies - they come with different temperatures. The range can be somewhere from 3500 to over 20,000 kelvin, according to the Wikipedia. However, red giants or supergiants are quite common; these would have temperatures around 4000 K or so.
Super Giant was created in 1959.
the super giant stars are red
The early stages of a red giant star fit that description.
It is a giant but not quite a super giant.
The surface temperature of a red giant is, at most, 5000 Kelvin.
the temperature of..an white dwarf star is 10,000
The colour of a star is a good measure of the surface temperature.
Alnilam is a blue-white super giant star, with a surface temperature of around 27,000 Kelvin.
Super Giant was created in 1959.
the super giant stars are red
The duration of Super Giant is 2700.0 seconds.
The early stages of a red giant star fit that description.
A red color, in a star, is associated with a low surface temperature.
The giant star
It is a giant but not quite a super giant.
A Super Nova.
Canopus is a yellow-white F super giant -- a star with a temperature from 10,000 to 14,000 degrees Fahrenheit (6,000 to 8,000 Kelvin)Canopus is the second brightest star :)