My wife and I are planning a 10-day trip to Norway in early September. We'd really like to see the Aurora, and Wikipedia claims that aurora activity peaks near the equinox (a bit later in September), so that sounds promising. The "Norway in a Nutshell" tour offers a Northern Lights variant, which couples the standard "NiN" multi-modal trip with a trip up to Tromso, which is inside the Arctic Circle and is (again, per Wikipedia) one of the best places on the planet to see the aurora.
My question: Do we really have to go up to Tromso to see the northern lights? Have any Forum contributors experienced the aurora further south in Norway -- say in Trondheim or even Bergen? I realize it's all very unpredictable but I wouldn't want to commit to the Tromso excursion if it's not necessary, since there's so much to do/see in Norway without it.
I did a search and found 2 aurora discussions in the Travel Forum from 2010, but they recommended other places (e.g., Alaska, Canada, Scotland) for aurora viewing, and we are definitely going to Norway this time around.