Is it hot at Magnificent Mile?

The Magnificent Mile: which side of the street the towers shade

Chicago's Magnificent Mile is a canyon of tall buildings running north up Michigan Avenue, and in a place like that the shade question answers itself if you know which way the sun is pointing. Unlike an open plaza, this stretch always has one shaded sidewalk and one sunny one; the trick is standing on the right side as the afternoon turns.

At 3 PM on a July day the sun sits about 57 degrees up on a west-southwest bearing near 240. The avenue runs roughly north to south, so through the afternoon the sun works down the west side of the street, which means the tall buildings on that west side cast their shadow across onto the east sidewalk. In practical terms, walk the east side in the afternoon to stay in building shade, and cross to the west side in the morning when the low eastern sun is shadowing that flank instead.

Best hours to stroll

Chicago summers are warm rather than brutal, with July highs around 85°F and August close behind at 80, so this is about comfort more than heat danger. Still, the open plazas and bridge approaches along the Magnificent Mile bake when the sun is high.

• Morning, after the 5:28 AM July sunrise, keeps the west sidewalk shaded and the crowds thin.
• Late afternoon toward the 8:23 PM sunset lengthens the tower shadows until they cover most of the street.
• Midday is the most exposed, especially at the wider crossings where no building blocks the overhead sun.

Open spots that catch the full sun

The gaps in the wall of towers are where you feel the exposure: the DuSable Bridge over the river, the plaza openings, and the riverfront terraces all lose the building shade and sit in full sun. If you are pausing to take in the view from the bridge, that is the hottest, brightest stretch of the whole walk, with the water bouncing extra light up at you and no canopy overhead. Treat those spots as short stops, not places to linger at midday.

Because the Magnificent Mile is a shopping and walking destination, the good news is that ducking indoors is always an option, and the shaded east sidewalk keeps most of a summer afternoon pleasant. Off-season, the equation flips entirely: by November the high is down to 49 and the low winter sun barely clears the buildings, so shade stops mattering and wind takes over as the concern.

For a look at how the towers throw their shadows across Michigan Avenue at the hour you plan to walk it, the satellite shadow view shows it for any date. On the Magnificent Mile, shade is a matter of picking your sidewalk: east in the afternoon, west in the morning, and keep the bridge crossings brief when the sun is high.