Summer — Month [patched]

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 are a period of high activity for both nature and humans. European Commissionhttps://ec.europa.eu Seasonality in the tourist accommodation sector summer month

To simplify statistical tracking, meteorologists define summer as June, July, and August in the Northern Hemisphere. It sounds like you might be referring to