Yes

you do need a jacket based on the weather in Amsterdam, Netherlands 1 second ago

Why? Because it's quite chilly.
45°F7°C & Cloudy

Wind is 7 mph11 km/h from the E, gusting to 13 mph21 km/h
April 27
12am45°F7°C7 mph11 km/h ECloudy
1am46°F8°C8 mph12 km/h ECloudy
2am47°F8°C8 mph14 km/h ECloudy
3am48°F9°C8 mph13 km/h EDrizzle
4am49°F9°C8 mph13 km/h SEDrizzle
5am50°F10°C9 mph14 km/h SECloudy
6am54°F12°C9 mph15 km/h SECloudy
7am56°F13°C9 mph15 km/h SCloudy
8am57°F14°C10 mph17 km/h SCloudy
9am58°F15°C10 mph15 km/h SMostly Cloudy
10am60°F16°C9 mph15 km/h SMostly Cloudy
11am60°F15°C9 mph15 km/h SMostly Cloudy
DateLowHighWindDayNight
April 2644°F7°C60°F16°C9 mph14 km/h from SEDrizzleCloudy
April 2749°F9°C61°F16°C17 mph27 km/h from SWindyMostly Clear
April 2844°F7°C64°F18°C7 mph11 km/h from SMostly CloudyMostly Cloudy
April 2950°F10°C68°F20°C7 mph12 km/h from SEDrizzleDrizzle
April 3056°F13°C73°F23°C5 mph9 km/h from NMostly CloudyMostly Cloudy
May 153°F12°C64°F18°C8 mph13 km/h from NWRainMostly Cloudy
May 253°F11°C68°F20°C10 mph16 km/h from NDrizzleMostly Cloudy

Yes

Low of 49°F10°C, High of 61°F16°C
Wind: 17 mph27 km/h
Precipitation: 22% rain

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