DUMBO is a neighborhood with two natural shade structures and almost nothing else. The first is the Manhattan Bridge itself, which crosses overhead at a height of around 130 feet and throws a stripe of shadow about sixty feet wide that walks southwest across the neighborhood through the morning. The stripe starts on Jay Street at sunrise, crosses Washington by 8, sits over the cobblestones of Adams by 9:30, and reaches the East River edge by about 11:45, after which it folds up into the bridge’s own footprint. The second is the long brick wall of the old warehouse row on Water Street, which holds a continuous building shadow east-northeast through the entire morning.
There is almost nothing else. DUMBO was a manufacturing district until the 1990s and its street trees, where they exist, are young — the largest are honey locusts planted in 2010 on Front Street, and they’re still getting started. So the picks below are all routes that explicitly use the bridge stripe and the warehouse wall, sequenced for the time the geometry works.
A caveat: the bridge stripe is real but it’s only sixty feet wide, which means a normal sidewalk crossing puts you in and out of shade every ten feet. The Stay Cool router accounts for this — it’ll keep you in the moving stripe by routing diagonally rather than along the grid. The result is a slightly longer walk that holds shade for far more of its length. You’ll see what we mean.