Rok Perko of Slovenia, another late starter, finished second for his first career podium result, 0.19 seconds behind Nyman's time of 1 minute, 28.82 seconds. Downhill world champion Erik Guay of Canada was third, 0.24 back.
Norwegian teammates Kjetil Jansrus and overall World Cup leader Aksel Lund Svindal finished fourth and fifth, respectively.
The women's World Cup super-G race in the Alpine resort of Val d'Isere, France, has been canceled because of poor weather conditions.
It has not yet been decided when the race will be rescheduled.
Bobsled & skeleton
Canada's Lyndon Rush and brakeman Jesse Lumsden raced their first World Cup two-man bobsled victory of the season Saturday, and American Katie Uhlaender won the women's skeleton race in La Plagne, France.
Rush and Lumsden, a former CFL running back, had a two-run time of 2 minutes 1.18 seconds. Switzerland's Beat Hefti and Alex Baumann finished second in 2:01.45, and Americans Steven Holcomb and Steven Langton followed in 2:01.48.
Uhlaender won the skeleton race in 2:08.22. Canada's Sarah Reid and Germany's Marion Thees tied for second.
Tobias Wendl and Tobias Arlt won their fourth consecutive luge World Cup event Saturday in Sigulda, Latvia, to maintain a perfect record this season.
Earlier Saturday, Tatiana Ivanova of Russia shattered Germany's winning streak in the women's competition, beating four Germans to clinch her second luge World Cup victory and first of the season.
Erin Hamlin of the United States was sixth, 0.545 seconds behind Ivanova, while compatriots Julia Clukey and Emily Sweeney were 10th and 17th.