What is a good water temperature for swimming in a lake?

The ideal water temperature for swimming in a lake can vary depending on personal preference, but generally a temperature between 70-78 degrees Fahrenheit (21-26 degrees Celsius) is considered comfortable for most swimmers. Water temperatures below 70 degrees Fahrenheit may be too cold for some people, while temperatures above 78 degrees Fahrenheit may feel too warm for extended periods of swimming.

It's important to take into consideration the ambient air temperature and weather conditions when deciding on a suitable water temperature for swimming in a lake. Warmer water temperatures are more suitable for swimming on cooler days, while cooler water temperatures may be more refreshing on hot days.

It's also important to keep safety in mind when swimming in a lake, as water temperature can affect how the body responds to cold water immersion. It's recommended to gradually acclimate to the water temperature, and always swim with a buddy or within sight of a lifeguard if possible. Additionally, wearing a wetsuit or other thermal swimming gear can help keep you warm in cooler water temperatures.