Is it still warm enough to swim in Antalya in late October?
Yes, it is usually still warm enough to swim in Antalya in late October. The sea often remains around 23–25°C, so many locals and visitors continue swimming, especially on sunny days. It may actually feel warmer in the water than when you get out if there is a breeze. The weather is less predictable than in summer. Daytime conditions can still be pleasantly warm, but evenings are cooler, daylight is shorter and occasional heavy rain or thunderstorms are possible. Antalya’s long-term October average temperature is about 21°C, with around five to six rainy days during the month. For the best conditions, swim between late morning and mid-afternoon and choose sheltered beaches such as Lara, Konyaaltı or beaches around Side and Alanya. Pack summer clothes and swimwear, but also bring a light jacket and something waterproof. So yes—you will probably be able to swim, but I would not plan the entire holiday around having perfect beach weather every day.