It sounds like you might be referring to in the context of paper thickness/weight or printing (e.g., for a calendar, flyer, or academic use).
The summer months, typically defined as June, July, and August in the Northern Hemisphere, and December, January, and February in the Southern Hemisphere, are characterized by warm weather, long days, and a range of activities and events. This report provides an overview of the summer months, including temperature trends, popular activities, and notable events. summer month