endless summer

Translations
бесконечное лето
They traveled to tropical destinations seeking an endless summer.
Они путешествовали по тропическим местам в поисках бесконечного лета.
Definitions
A period of time, often idealized, that feels like summer never ends; it can refer to a carefree, enjoyable, and relaxed lifestyle or atmosphere, typically associated with warm weather, vacations, and leisure activities. The phrase is also the title of a famous 1966 surf documentary film.