Overview: VanuatuVanuatu in general has a tropical climate. The day temperatures range from 27 °C (80 °F) in July to 31 °C (87 °F) in February. Temperatures during the night go from 20 °C (69 °F) in August to 24 °C (74 °F) in March. Sea temperatures are in the following range: 26 °C (79 °F) in August to 29 °C (84 °F) in February. The least rainy month in Vanuatu is September with its 9 days of rain, the rainiest month is February, when it rains 18 days.