On 22 November 2021, a Fokker F100 crew discovered as they neared their intended destination, Paraburdo, that the pre-departure forecast weather was so inaccurate that instead of the anticipated benign conditions, a much lower actual cloud base prevailed on a sector where additional fuel reserves were carried in place of the usual designated alternate(s). A delay in recognising the potential implications of initially unsuccessful approaches and difficulty in obtaining updated present and forecast weather for potential diversion options resulted in a fourth approach being intentionally continued very significantly below minima, albeit successfully. Relevant aircraft operator procedures were identified as inadequate.