Thirty degrees is a measurement of angle or temperature. In geometry, it represents one-eighth of a full circle, which is 360 degrees. This angle can be found in various shapes, such as triangles, where a 30-degree angle is often seen in 30-60-90 triangles, a common type of right triangle. In terms of temperature, 30 degrees Celsius is considered warm and is often associated with pleasant summer weather. In Fahrenheit, this temperature is equivalent to 86 degrees. At this temperature, many people enjoy outdoor activities, and it is a common range for beach days and picnics.