They aren’t listed as waterproof or water resistant that I can find so outside if it gets really damp might not be a good idea.
Roam or Move might be a better choice, or an Amp inside and Sonos/Sonance outdoor speakers outside.
https://support.sonos.com/en-us/article/selecting-a-location-for-your-sonos-speakers
Humidity resistance and bathroom placement
Some Sonos products have sealed architectures, making them humidity-resistant and allowing you to safely use them in the bathroom. Sonos speakers that are not waterproof may be damaged if exposed directly to water or left outside for extended periods.
The following products are humidity resistant:
- Era 100
- Era 300
- Five
- Move
- Move 2
- One (Gen 1)
- One (Gen 2)
- One SL
- Play:1
- Play:5 (Gen 2)
- Roam
- Roam SL