Yes

you do need a jacket based on the weather in Portsmouth, UK 1 second ago

Why? Because the wind is harsh and biting!
61°F16°C & Cloudy

Wind is 11 mph18 km/h from the South, gusting to 25 mph40 km/h
November 5
11am61°F16°C11 mph17 km/h SouthCloudy
12pm61°F16°C11 mph17 km/h SouthCloudy
1pm62°F16°C10 mph16 km/h SouthCloudy
2pm61°F16°C8 mph13 km/h SouthCloudy
3pm61°F16°C8 mph13 km/h SoutheastCloudy
4pm61°F16°C9 mph14 km/h SoutheastCloudy
5pm61°F16°C9 mph14 km/h SoutheastCloudy
6pm60°F16°C9 mph15 km/h SoutheastCloudy
7pm60°F15°C10 mph16 km/h SoutheastCloudy
8pm59°F15°C11 mph17 km/h SoutheastCloudy
9pm59°F15°C11 mph17 km/h SoutheastCloudy
10pm59°F15°C10 mph16 km/h SoutheastCloudy
DateLowHighWindDayNight
November 559°F15°C62°F16°C9 mph15 km/h from SoutheastCloudyCloudy
November 655°F13°C61°F16°C9 mph14 km/h from SouthMostly CloudyMostly Cloudy
November 754°F12°C59°F15°C13 mph20 km/h from SouthRainDrizzle
November 849°F9°C58°F14°C6 mph10 km/h from WestPartly CloudyPartly Cloudy
November 947°F9°C57°F14°C10 mph17 km/h from SouthDrizzleRain
November 1051°F11°C56°F13°C13 mph22 km/h from SouthRainRain
November 1149°F10°C57°F14°C14 mph22 km/h from SouthMostly CloudyWindy

Yes

Low of 55°F13°C, High of 62°F17°C
Wind: 9 mph14 km/h
Precipitation: None

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