Overview: NassauNassau (Bahamas) is a place with a tropical climate. The day temperatures range from 25 °C (77 °F) in January to 33 °C (91 °F) in August. Temperatures during the night go from 18 °C (65 °F) in January to 25 °C (77 °F) in August. The highest sea temperatures in Nassau are in August with 29 °C (85 °F) and the lowest in February with 24 °C (75 °F). The least rainy month in Nassau is April with its 6 days of rain, the rainiest month is August, when it rains 16 days.