The ideal beach temperature can vary depending on personal preferences and regional norms. However, generally speaking, a temperature below 70 degrees Fahrenheit (21 degrees Celsius) might be considered too cold for many people to enjoy a typical beach day with swimming and sunbathing. Young children and elderly family members may be particularly sensitive to cooler temperatures.
For a beach outing with family, it's essential to consider factors like wind chill and water temperature, as they can significantly impact how comfortable and safe the experience will be. If the weather is windy and the water is cold, it might not be enjoyable or safe for children and elderly family members. In such cases, it's often better to wait for a warmer day to make the most of your beach trip.
Remember, some people might still enjoy walking along the beach, collecting seashells, or having a picnic even on slightly cooler days, so it ultimately comes down to personal preferences and the activities you have planned. Always prioritize safety and the comfort of your family members when making such decisions.