B747-100 ABANDONS A COUPLED APCH INTO HONG KONG WITH TURB AND WIND GUSTS.

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ON A COUPLED APCH TO RWY 25L IN HONG KONG DURING TROPICAL STORM. MY FIRST TIME TO THIS ARPT AND AFTER FLYING 8 HRS FROM OMFJ. ABOUT 8-10 MI; WE RPTED TO APCH THAT WE WERE IN MODERATE TO SEVERE TURB (WOULD HAVE LOVED AN OPTION OF DISCONTINUING THE APCH). ABOUT 6-8 MI OUT; LEAVING 2500 FT; THE AUTOPLT WAS OVERCTLING; STILL SEVERE TURB; AND FOR SAFETY REASONS I DISCONNECTED THE AUTOPLT AND STOPPED THE DSCNT AND NOTIFIED APCH THAT I WANTED VECTORS OUT OF THERE. I HAD TERRAIN TO MY L AND FIGURED THE SEVERE WX WAS TAKING ME IN THAT DIRECTION. RELUCTANTLY GAVE ME A HDG OF 270 DEGS. BUT THAT HDG SEEMED NOT GOOD ENOUGH; SO I TOLD THEM I WAS CONTINUING TO CLB ABOVE THE INITIAL MISSED APCH ALT OF 2000 FT UP TO 3500 FT; THEN THEY CLRED ME TO 4000 FT. NO WARNING LIKE GPWS OR WINDSHEAR BY THE ACFT. WE WERE VECTORED OUT AND THEN LATER TRIED ANOTHER APCH. LANDED OK; BUT WAS INFORMED BY TWR TO PHONE THEM. I DID; AND THEY EXPRESSED THEY DID NOT LIKE ME DOING THE PUBLISHED MISSED APCH. I FIGURED THAT MY SIT WARRANTED DIFFERENT MEASURES TO KEEP A BAD SIT FROM GETTING WORSE.