Yes

you do need a jacket based on the weather in Hamilton, Bermuda 1 second ago

Why? Because it's on the windy side!

76°F24°C & Windy

Wind is 16 mph25 km/h from the Southwest, gusting to 21 mph34 km/h

Date	Low	High	Wind	Day	Night
June 7	75°F24°C	77°F25°C	17 mph27 km/h from Southwest	Windy	Windy
June 8	76°F24°C	77°F25°C	12 mph19 km/h from Southwest	Mostly Clear	Mostly Clear
June 9	76°F24°C	77°F25°C	9 mph14 km/h from South	Mostly Clear	Mostly Clear
June 10	76°F24°C	77°F25°C	6 mph10 km/h from South	Mostly Clear	Mostly Clear
June 11	76°F24°C	77°F25°C	6 mph10 km/h from Southwest	Mostly Clear	Partly Cloudy
June 12	76°F24°C	77°F25°C	7 mph11 km/h from Southwest	Mostly Cloudy	Partly Cloudy
June 13	75°F24°C	78°F25°C	6 mph9 km/h from Southwest	Partly Cloudy	Partly Cloudy

Low of 75°F24°C, High of 77°F25°C
Wind: 12 mph19 km/h
Precipitation: None