Yes

you do need a jacket based on the weather in Pisa, Province of Pisa, Italy 1 second ago

Why? Because it's not very warm out.
54°F12°C & Cloudy

Wind is 1 mph2 km/h from the E, gusting to 6 mph10 km/h
April 25
6am54°F12°C2 mph2 km/h EMostly Cloudy
7am55°F13°C1 mph2 km/h NEMostly Cloudy
8am57°F14°C3 mph4 km/h NWPartly Cloudy
9am59°F15°C4 mph7 km/h WPartly Cloudy
10am60°F15°C6 mph9 km/h WMostly Clear
11am59°F15°C6 mph10 km/h WMostly Clear
12pm59°F15°C5 mph9 km/h WMostly Clear
1pm58°F14°C4 mph7 km/h WClear
2pm55°F13°C4 mph6 km/h WMostly Clear
3pm53°F12°C2 mph4 km/h NWClear
4pm51°F11°C1 mph2 km/h NWClear
5pm50°F10°C1 mph2 km/h NEMostly Clear
DateLowHighWindDayNight
April 2443°F6°C60°F15°C4 mph6 km/h from NWPartly CloudyPartly Cloudy
April 2543°F6°C63°F17°C3 mph5 km/h from SEMostly CloudyMostly Cloudy
April 2648°F9°C66°F19°C6 mph9 km/h from ERainMostly Cloudy
April 2751°F11°C73°F23°C6 mph9 km/h from EMostly CloudyMostly Clear
April 2852°F11°C77°F25°C5 mph8 km/h from EMostly ClearMostly Clear
April 2955°F13°C77°F25°C5 mph9 km/h from SEPartly CloudyDrizzle
April 3057°F14°C65°F18°C5 mph8 km/h from SERainRain

Yes

Low of 43°F6°C, High of 63°F17°C
Wind: 3 mph5 km/h
Precipitation: 38% rain

Support This Page