La Niña is officially underway in the Pacific, according to the Pacific Regional Environment Programme (SPREP). Tonga is among the countries in the South-West Pacific that will usually experience higher than normal rainfall, under these conditions that are likely to continue into the first quarter of 2021. The last La Niña conditions in the 2017-2018 season saw three cyclones in the Pacific- Gita, Hola and Fehi.
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Results for El Nino Southern Oscillation
Tonga weather forecast from yr.no, delivered by the Norwegian Meteorological Institute and the NRK. See also Fua'amotu Weather Forecasting Center, Tonga, for latest local weather bulletin.