Is my Boxster oveheating?

[BFlath]

My water temperature indicated like that while driving hard or stuck in traffic.
I cleaned an incredible amount of debris from the radiators now it's almost always at the 12 o'clock position.

[elgyqc]

Originally Posted by BFlath

... I cleaned an incredible amount of debris from the radiators ...

Do this. The airflow to the radiators is very efficient... at piling leaves, seeds and other debris into the rads. Ben Burner has a good Youtube video on how to remove the bumper and do this. While the bumper is off you can install a wire grill behind the inlets to catch most leaves and larger debris.
I agree with rick3000, that is not a high temperature.

[rexcramer]

+1 on the ability for these cars to suck all manner of things into it. I pull my cover off every couple of years. Be sure to split the radiator and the condensing coils apart. Stuff manages to get in between them also. It's summer in New Zealand, gauge looks about right. Future considerations; X/O the water pump, perhaps a low temp stat and flush the system thoroughly.

[paulofto]

+2 on cleaning the rads. The first time I did mine there were dozens of leaves, a surprising number of insects and on one side a bird. I installed ‘gutter guard’ grilles after doing the first cleaning and since then the debris has been greatly reduced when doing subsequent cleaning.