Sea surface temperatures (SST)

Issued 2 April 2024

• Monthly SST were warmer than average across most of the tropical Pacific Ocean.
• Warm SST anomalies persist along the eastern and southern Australian coastline.
• Waters across the equatorial Pacific have cooled over the past fortnight, continuing the cooling trend seen with the El Niño decay.
• The latest values of the three NINO indices in the tropical Pacific for the week ending 31 March were: NINO3 +0.86 °C, NINO3.4 +1.05 °C, NINO4 +0.77 °C (sourced from the Bureau of Meteorology on 2 April 2024).
• Persistent NINO3 or NINO3.4 values warmer than +0.8 °C are typical of El Niño, while persistent values cooler than −0.8 °C typically indicate La Niña.