Yes

you do need a jacket based on the weather in 64200 Biarritz, France 1 second ago

Why? Because it's not very warm out.
51°F11°C & Cloudy

Wind is 9 mph14 km/h from the W, gusting to 14 mph22 km/h
April 25
4am52°F11°C9 mph15 km/h WCloudy
5am53°F12°C10 mph16 km/h WCloudy
6am54°F12°C10 mph16 km/h WCloudy
7am55°F13°C10 mph17 km/h WCloudy
8am55°F13°C10 mph17 km/h WCloudy
9am56°F13°C11 mph17 km/h WCloudy
10am56°F13°C11 mph18 km/h WDrizzle
11am55°F13°C11 mph17 km/h WDrizzle
12pm55°F13°C11 mph17 km/h WCloudy
1pm55°F13°C10 mph17 km/h WCloudy
2pm54°F12°C10 mph16 km/h WCloudy
3pm53°F12°C9 mph14 km/h WCloudy
DateLowHighWindDayNight
April 2450°F10°C56°F13°C10 mph16 km/h from WDrizzleRain
April 2550°F10°C59°F15°C6 mph9 km/h from WDrizzleDrizzle
April 2651°F11°C62°F17°C10 mph16 km/h from SWRainPartly Cloudy
April 2746°F8°C59°F15°C6 mph10 km/h from NPartly CloudyCloudy
April 2852°F11°C57°F14°C4 mph7 km/h from NWCloudyMostly Cloudy
April 2948°F9°C65°F18°C5 mph8 km/h from SPartly CloudyRain
April 3049°F10°C56°F13°C7 mph12 km/h from NWRainRain

Yes

Low of 50°F10°C, High of 59°F15°C
Wind: 6 mph9 km/h
Precipitation: 47% rain

Support This Page