Yes

you do need a jacket based on the weather in Tokyo, Japan 2 minutes ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
54°F12°C & Mostly Clear

Wind is 8 mph13 km/h from the North, gusting to 16 mph26 km/h
October 30
12am55°F13°C8 mph13 km/h NorthMostly Clear
1am59°F15°C9 mph14 km/h NorthClear
2am62°F17°C8 mph13 km/h NorthMostly Clear
3am65°F18°C8 mph13 km/h NorthMostly Clear
4am66°F19°C7 mph12 km/h NorthMostly Clear
5am67°F19°C7 mph11 km/h NorthClear
6am67°F19°C6 mph10 km/h NortheastClear
7am65°F18°C5 mph8 km/h NorthClear
8am62°F17°C4 mph7 km/h NortheastClear
9am60°F16°C4 mph7 km/h NortheastClear
10am58°F14°C4 mph7 km/h NorthMostly Clear
11am56°F13°C4 mph7 km/h NorthClear
DateLowHighWindDayNight
October 2948°F9°C67°F19°C7 mph11 km/h from NorthClearMostly Cloudy
October 3050°F10°C66°F19°C7 mph11 km/h from NorthRainThunderstorms
October 3157°F14°C71°F22°C4 mph7 km/h from NorthwestMostly CloudyMostly Clear
November 152°F11°C67°F20°C3 mph5 km/h from SouthMostly CloudyClear
November 250°F10°C66°F19°C11 mph17 km/h from NorthwestClearClear
November 345°F7°C63°F17°C5 mph7 km/h from NortheastMostly ClearPartly Cloudy
November 447°F8°C64°F18°C6 mph9 km/h from NorthCloudyRain

Yes

Low of 50°F10°C, High of 65°F19°C
Wind: 7 mph11 km/h
Precipitation: 85% rain

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