What is the most likely temperature if your outside swiming?

The most likely temperature for comfortable outdoor swimming typically ranges between 70°F to 85°F (21°C to 29°C). Water temperatures should ideally be around 78°F to 82°F (26°C to 28°C) for a pleasant swimming experience. Cooler temperatures might be refreshing, while anything below 70°F (21°C) can feel chilly for most swimmers. Ultimately, personal preference and acclimatization can also influence comfort levels.