The former world champion has yet to finish on the podium this year, and his chances of a big step forward over the remainder of the campaign are slim with his team now focused on its 2014 car.
But despite admitting there is 'nothing certain' about him definitely being part of McLaren's line-up for next year, Button says that he remains committed to staying where he is.
"If this was a team that was consistently finishing fourth or fifth in championship then of course I would look elsewhere," said Button, who joined McLaren in 2010 after winning the world championship the previous year.
"In that case, I would look to one of the front-running teams to step up to, somewhere that could give me a race-winning car.
"But this isn't a team that is finishing four of fifth in the constructors'. This is a bad year and in years to come this team will be fighting for world championships. I am not looking around like some people might think."
The Formula 1 driver market could be set for a major shake-up next year in the wake of Mark Webber's decision to quit Red Bull and switch to sportscars.
Kimi Raikkonen's future with Lotus is not guaranteed, with Red Bull considering him as a replacement for Webber, while Ferrari has not yet decision whether or not Felipe Massa will remain.