Boeing Company Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 166; Flight Crew Total 10760; Flight Crew Type 4377
Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Flight Crew Requested ATC Assistance / Clarification
Procedure
Fly this ID frequently. This time of year we land early enough in day where sun and haze conspire to form very poor slant angle visibility. The Tower and ATIS are non-specific to actual aircraft visibility.  They only call 'CAVOK'.  The published minimum visibility for this 'R' approach to 9R ILS is 3100 Meters (about 2 miles) and 3300 DA.No way is anyone seeing the runway by the MAP.  Yet they all land OK. H ow is that? We see ground OK; barely; but not [the] runway until around 300 to 400 feet [AGL].  I have many times requested 'T' [approach] which is an actual ILS to 200 feet and 1/2 mile (what is needed) but ATC GRU always refuses. That is the problem.  By refusing to give us the real ILS they are inviting this situation; since we cannot tell what the actual slant angle visibility is until we are at or near MAP.  This creates a conflict and unsafe situation; and is a regular occurring situation here.
Captain reported that actual slant range visibility conditions are often worse than reported on ATIS for their early morning approach and landing to SBGR; but the Tower is resistant to their requests for the full ILS.