Yes

you do need a jacket based on the weather in Heraklion, Greece 1 second ago

Why? Because there are strong winds blowing out there!
75°F24°C & Mostly Clear

Wind is 14 mph23 km/h from the North, gusting to 28 mph45 km/h
September 20
8am75°F24°C14 mph23 km/h NorthMostly Clear
9am74°F23°C14 mph22 km/h NorthClear
10am74°F23°C13 mph21 km/h NorthMostly Clear
11am73°F23°C12 mph20 km/h NorthMostly Clear
12pm72°F22°C12 mph19 km/h NorthwestMostly Clear
1pm72°F22°C11 mph18 km/h NorthwestMostly Clear
2pm71°F22°C11 mph17 km/h NorthwestMostly Clear
3pm70°F21°C10 mph17 km/h NorthwestMostly Clear
4pm70°F21°C10 mph17 km/h NorthwestClear
5pm70°F21°C10 mph16 km/h NorthwestClear
6pm69°F21°C9 mph15 km/h NorthwestClear
7pm69°F21°C9 mph14 km/h NorthwestClear
DateLowHighWindDayNight
September 1970°F21°C75°F24°C14 mph22 km/h from NorthMostly ClearClear
September 2067°F19°C78°F25°C11 mph17 km/h from NorthwestClearMostly Clear
September 2166°F19°C78°F25°C7 mph12 km/h from NorthwestClearClear
September 2266°F19°C77°F25°C5 mph7 km/h from NorthMostly ClearMostly Clear
September 2366°F19°C79°F26°C7 mph11 km/h from NorthwestClearClear
September 2467°F19°C81°F27°C10 mph17 km/h from NorthwestClearMostly Clear
September 2569°F20°C78°F25°C14 mph23 km/h from NorthwestMostly ClearMostly Clear

No

Low of 67°F20°C, High of 78°F26°C
Wind: 11 mph17 km/h
Precipitation: None

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