Indian Ocean Dipole (IOD)

(Issued 2 May 2024)

The Indian Ocean Dipole (IOD) is currently neutral.

• The latest weekly value of the Indian Ocean Dipole (IOD) index to 28 April 2024 was +0.68°C. This is the seventh week above the positive threshold. Model forecasts suggest a positive IOD events may be developing.
• All five international climate models surveyed by the Bureau of Meteorology suggest positive IOD conditions in May.
• At this time of year, the confidence in model IOD forecasts beyond autumn is low.
• The Indian Ocean Dipole (IOD) is the difference in sea surface temperatures between the eastern and western tropical Indian Ocean.