In summer, the average temperature is 25°C in Bora Bora and 22°C in Detroit. The average rainfall in summer is 79 mm in Bora Bora and 95 mm in Detroit. In summer, it is warmer in Bora Bora and it rains less in Bora Bora. In winter, it is colder in Bora Bora and it rains more in Bora Bora.