Yes

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

Why? Because the air feels like the cozy middle ground between summer and winter!
52°F11°C & Mostly Cloudy

Wind is 4 mph7 km/h from the Southwest, gusting to 9 mph14 km/h
November 9
7am52°F11°C5 mph8 km/h SouthwestMostly Cloudy
8am53°F12°C6 mph10 km/h SouthMostly Cloudy
9am55°F13°C9 mph14 km/h SouthMostly Cloudy
10am56°F13°C11 mph18 km/h SouthMostly Cloudy
11am57°F14°C13 mph21 km/h SouthCloudy
12pm57°F14°C13 mph21 km/h SouthCloudy
1pm57°F14°C13 mph21 km/h SouthCloudy
2pm57°F14°C13 mph21 km/h SouthCloudy
3pm57°F14°C13 mph21 km/h SouthCloudy
4pm57°F14°C13 mph21 km/h SouthCloudy
5pm56°F14°C14 mph22 km/h SouthCloudy
6pm56°F13°C15 mph24 km/h SouthCloudy
DateLowHighWindDayNight
November 945°F7°C57°F14°C12 mph19 km/h from SouthCloudyRain
November 1051°F11°C56°F13°C15 mph24 km/h from SouthwestRainMostly Cloudy
November 1151°F10°C59°F15°C19 mph30 km/h from SouthDrizzleDrizzle
November 1256°F14°C59°F15°C13 mph20 km/h from SouthDrizzleRain
November 1355°F13°C60°F15°C7 mph11 km/h from SouthRainRain
November 1454°F12°C60°F15°C12 mph19 km/h from SoutheastDrizzleMostly Cloudy
November 1549°F10°C55°F13°C14 mph22 km/h from SoutheastMostly CloudyMostly Cloudy

Yes

Low of 52°F11°C, High of 56°F14°C
Wind: 15 mph24 km/h
Precipitation: 81% rain

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