During winter, June through October, the weather is dramatically different. Grey skies, breezy conditions, higher humidity, and cooler temperatures prevail. Long 10 to 15-day stretches of dark overcast skies are not uncommon. Persistent morning drizzle occasionally occurs from June through September, coating the streets with a thin layer of water that generally dries up by early afternoon. Winter temperatures vary little between day and night. They range from lows of  and highs of , rarely exceeding  except in the easternmost districts.