Four men go on trial in Nukuʻalofa charged with a mother's manslaughter in the MV "Princess Ashika" ferry disaster.
Tonga is hit by ashfall and a tsunami after the eruption of Hunga Tonga, destroying homes as locals struggle to find higher ground. Major flooding is reported in the capital Nukuʻalofa. Shock waves from the eruption are detected as far away as Alaska, United States. Other Pacific countries have also advised their citizens to seek higher ground. Internet access has reportedly been disrupted in Tonga.
Suffering from pneumonia, Tongan Prime Minister ʻAkilisi Pōhiva is rushed from hospital in Nukuʻalofa to one in Auckland, New Zealand, where he was treated for a liver condition earlier this year. According to a government spokesperson, Pōhiva is in a "very serious" condition.
Tongan Crown Prince Tupoutoʻa ʻUlukalala marries Sinaitakala Fakafanua in a wedding ceremony in Nukuʻalofa. The marriage, the first for a Crown Prince of Tonga in 65 years, sparks controversy as the couple are second cousins.
Cyclone Rene hammers Tonga with gusts of 160 kilometres an hour, isolating Tongans for several days. Widespread damage is reported in the capital, Nukuʻalofa, and contact is lost with the northern island of Vavaʻu.