Grantham Island Rainfall Forecast

  • 100%15–25mm
  • 85%1–5mm
  • 50%< 1mm
  • 65%1–5mm
  • 55%< 1mm
  • 35%< 1mm
  • 20%< 1mm
Graph Plots Open in Graphs

  • Rainfall Probability Forecast Bureau of Meteorology

  • Rain Today Real-Time

Grantham Island Rainfall Statistics View More

May Rainfall

Port Lincoln Airport (19km)

  • Total Rainfall May

    23.6mm

  • Daily Average May

    1.7mm

  • Wettest Day 3 May, 2026

    7.4mm

  • Wet Days May

    10/15 (67%)

Climate (2010–Present)

Port Lincoln Airport (19km)

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  • Annual Average 2021–2025

    416.6mm

  • Monthly Average 2021–2026

    35.3mm

  • Daily Average 2021–2026

    1.2mm

  • Wettest Day 22 January, 2022

    47.4mm
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