Almost everyone’s ring size will fluctuate throughout the day or with different seasons. Ring size can be affected by temperature, what you’ve eaten (salty foods), and certain activities. If you’re trying to get the most accurate ring size, measure multiple times using different methods. You’ll get the truest measurement later in the day and when your hands are slightly warm. If you find that your ring size swings dramatically between seasons there are a couple of things you can do. Since all of your fingers are different sizes, try moving the ring to another finger where it fits properly, then move it back when the seasons change again. Another option is to buy the ring size that fits your finger when it’s the largest, then use a ring guard whenever the ring feels loose.