The city is different on rainy days, sometimes in surprising ways we don't always notice. Light and shadows change their shape. Subway stairs become even more congested than usual as passengers break stride to fight with their umbrellas. Outdoor seating empties out and the doorways in public buildings bustle a bit more.
On first glance, the empty seats in public plazas make these public spaces appear lifeless. It may seem their functions have all been suspended, awaiting the return of better weather. Plazas probably look like fairweather places.
But if you stop for a moment, as you stand in the rain you will see many plazas still serve some use. More often than not, the spaces they form cut corners off the street grid. For everyone rushing to get out of the rain, the plaza is the direct route. Steady streams of fast moving pedestrians course through the plazas.
Of course, as they grip their umbrellas, trying to keep the wind from tearing them inside out, most people hardly notice the shortcut afforded by these little public spaces. They may also be unaware of the effect of the paved surfaces underfoot. Whether they notice or not, the higher quality pavers or flagstones in the plazas provide relief from the drabness of the gray concrete sidewalks, grown darker from soaking in the rain.
On rainy days, plazas do not serve their usual purpose as places to rest or spend time with others. Their aspect changes, but they remain important spaces serving the needs of the public.