From memory thats seems fine on a hot day as my car can get to those temps too. + it depends if you run your A/C or driving up a hill, anything that requires the car to be rev'd alittle harder with effect the temps. Again its normal.
Normal crusing temps are just under 90 degrees.
From my understanding, the R34 GTR's seem to hold quite a consistant temp, even with a bit of a fang.
My friend Tim GTR on SAU has a R34 GTR V-Spec, I took it out for a run, hammered it down the straight and a few corners, then check the MFD with the oil and water temps and they seem stable and yes within that range from about 91 to 98, I think it sat at about 93 degrees C.
What engine oil you using?