Yes

you do need a jacket based on the weather in Daniel K. Inouye International Airport (HNL), 300 Rodgers Blvd, Honolulu, HI 96819, USA 1 second ago

Why? Because it's on the windy side!
78°F26°C & Mostly Cloudy

Wind is 12 mph19 km/h from the Northeast, gusting to 22 mph35 km/h
July 21
3am78°F25°C12 mph19 km/h EastMostly Cloudy
4am77°F25°C12 mph19 km/h EastMostly Cloudy
5am77°F25°C11 mph18 km/h EastMostly Cloudy
6am76°F25°C11 mph18 km/h EastMostly Cloudy
7am76°F24°C11 mph18 km/h EastMostly Cloudy
8am76°F24°C11 mph17 km/h EastMostly Cloudy
9am75°F24°C10 mph17 km/h EastMostly Cloudy
10am75°F24°C11 mph17 km/h EastMostly Cloudy
11am75°F24°C11 mph17 km/h EastMostly Cloudy
12pm76°F24°C11 mph18 km/h EastMostly Cloudy
1pm76°F25°C11 mph18 km/h EastMostly Cloudy
2pm78°F26°C13 mph21 km/h EastMostly Cloudy
DateLowHighWindDayNight
July 2075°F24°C85°F29°C8 mph13 km/h from EastPartly CloudyMostly Cloudy
July 2175°F24°C85°F29°C13 mph22 km/h from EastMostly CloudyMostly Cloudy
July 2275°F24°C84°F29°C13 mph21 km/h from EastMostly CloudyMostly Cloudy
July 2375°F24°C85°F30°C11 mph17 km/h from EastMostly CloudyPartly Cloudy
July 2474°F24°C87°F30°C13 mph20 km/h from EastMostly ClearMostly Clear
July 2574°F23°C85°F30°C12 mph20 km/h from EastMostly ClearMostly Clear
July 2674°F23°C84°F29°C10 mph17 km/h from NortheastMostly ClearMostly Clear

No

Low of 75°F24°C, High of 84°F29°C
Wind: 13 mph22 km/h
Precipitation: None

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