Originally Posted by
Mythbuster
With this restriction on your type rating, you can not circle to land if the reported conditions at the airport are less than VMC (1000 ft. ceiling and 3 miles visibility). It has nothing to do with a visual approach, being able to maintain visual contact with the airport or being clear of clouds.
You can also tell if the airport is below VMC if the green/white beacon is on during daylight hours.
I don't believe the original question was referring to a restriction on a type rating...only the maneuver itself. Also, a circle to land maneuver has everything to do with remaining clear of clouds and maintaining visual contact with the runway. The whole maneuver is predicated on that.