Yes

you do need a jacket based on the weather in St. Kilda, United Kingdom 1 second ago

Why? Because some drizzle out there and a jacket will keep you cozy, but you won't break a seat and it's really really huffing out there!
58°F14°C & Drizzle

Wind is 38 mph61 km/h from the South, gusting to 47 mph75 km/h
September 17
11am57°F14°C39 mph63 km/h SouthDrizzle
12pm57°F14°C41 mph65 km/h SouthDrizzle
1pm57°F14°C42 mph68 km/h SouthDrizzle
2pm57°F14°C42 mph68 km/h SouthwestDrizzle
3pm57°F14°C43 mph69 km/h SouthwestDrizzle
4pm57°F14°C43 mph69 km/h SouthwestDrizzle
5pm57°F14°C45 mph72 km/h SouthwestWindy
6pm57°F14°C45 mph73 km/h SouthwestWindy
7pm57°F14°C44 mph71 km/h SouthwestDrizzle
8pm57°F14°C45 mph72 km/h SouthwestDrizzle
9pm57°F14°C45 mph73 km/h SouthwestWindy
10pm57°F14°C46 mph74 km/h SouthwestWindy
DateLowHighWindDayNight
September 1654°F12°C58°F14°C36 mph58 km/h from SouthRainDrizzle
September 1755°F13°C57°F14°C23 mph37 km/h from WestWindyRain
September 1853°F12°C57°F14°C24 mph38 km/h from SouthwestDrizzleRain
September 1950°F10°C53°F12°C27 mph44 km/h from NorthWindyWindy
September 2050°F10°C51°F11°C25 mph40 km/h from NorthWindyWindy
September 2150°F10°C54°F12°C12 mph20 km/h from NorthwestMostly CloudyMostly Cloudy
September 2253°F12°C54°F12°C12 mph19 km/h from NortheastMostly CloudyMostly Cloudy

Yes

Low of 55°F13°C, High of 57°F14°C
Wind: 23 mph37 km/h
Precipitation: 18% rain

Support This Page