Swimming in Mallorca in October is generally considered pleasant, though it marks the transition from the hot summer to a milder autumn. The average sea temperature in October is approximately 22°C (72°F), which many travelers find refreshing and comfortable for swimming, especially during the first half of the month. The daytime air temperatures usually hover around 22°C to 25°C (72°F - 77°F), making it warm enough for sunbathing on the sand. However, the weather becomes more unpredictable toward the end of the month, with an increased chance of rainfall and cooler evening breezes. While the water remains warm from the summer heat, the "thermal shock" when exiting the water might be more noticeable than in July or August. For those who prefer "bath-warm" water, a heated hotel pool might be a better choice in late October, but for the average beach-goer, the Mediterranean remains open and inviting for a late-season dip.