That's because its housing and other infrastructure was built by colonists who care more about conformity to the colonial culture than actual habitability.
Natural cooling? Withstanding floods? Fuck that noise, let's build flat-roofed structures directly onto the soil surrounded by open grass out of materials that are both expensive to replace and too weak to survive high wind speeds. Oh no why is it so hot all the time and why does every hurricane/storm surge cause so much property damage? Better keep rebuilding the same way.