The Kingdom of Tonga's Initial National Communication in response to its commitments under the United Nations Framework Convention on Climate Change (UNFCCC)

The climate of Tonga is tropical. It lies within the southeast trade wind zone of the South Pacific. Climatic parameters include rainfall, temperture. wind and sunshine hours. Tonga's annual rainfall can be defined by two seasons, the wet and dry seasons. Wet season is also known as the cyclone season and it is noticeable from November to April. Dry season runs from May to October. The wettest months are particularly January. February and March that may exceed 250mm of rainfall per month. During dry season, the amount of rainfall received per month is less than 250mm.