[Shivetya]

and much more weather dependent.

As long as the businesses if the affected area do not mind the change I see little reason to not do it.

[BrainInAJar]

Vancouver in the winter is rainy and cold, but a refusal to cater to motorists (most of whom are from the suburbs anyway) hasn't negatively impacted businesses, and if anything has positively impacted them

[arethuza]

Similarly Edinburgh - which is pretty damp, chilly and dark over the winter has had quite a few bars and restaurants invest in outside seating areas in tents on the street - particularly on George Street (where I work).