Doha's climate divides sharply into two main windows. October through April is the comfortable period, with temperatures between 15C and 28C. December and January are mild and pleasant, around 18C to 23C. These months suit outdoor souq visits, waterfront walks along the Corniche, and desert dune experiences. The FIFA World Cup legacy, world-class museums like the Museum of Islamic Art, and ambitious cultural events make Doha a destination year-round, but outdoor comfort is only guaranteed in the cooler months. May and June mark the transition as heat climbs steeply. July, August, and September are brutal, with temperatures regularly hitting 40C to 45C and humidity above 70% near the coast. All major outdoor activity shifts indoors. Air-conditioned malls, the National Museum of Qatar, and hotel facilities become the main focus in summer. Qatar National Day on December 18 fills the Corniche with celebrations and fireworks and is one of the best times for cultural events.