In Governor’s Harbour in December, there are ideal conditions for a vacation. The temperature during the day will be nice 25.7 °C (78.3 °F). The temperature of the sea will be perfect at 25.1 °C (77.1 °F). At night, temperatures hover around a pleasant 19.6 °C (67.3 °F). There are only 7 days of rain in the whole month, so you can leave your umbrella at home.