Is varg vikernes satanic

Yes. Absolutely. And like most (or all), he is constantly self contradicting, inconsistent, and always revealing his ignorance in new and astounding ways.

His lyrics don't necessarily contain overtly racist material, but through his actions

and Words as an individual, he has chosen to continually represent himself as a racist, white supremacist, homophobic, segregation supporting anti-Semite, who has come to conclusions (like greeks used to be blond haired and blue-eyed, but started "mixing" with people with different coloured skin, which caused them to stop producing philosophers) that have no reasoning, truth, research, or historical proof. Short answer, yes, a racist he is.