season (one of the four parts of the year in temperate regions: winter, spring, summer and autumn) / season (a certain time of the year, when something in particular happens) / season (the time of the year when teams compete)

off-season

The temperate period between the extremes of winter and summer; spring and autumn.

autumn (especially late autumn) / the beginnings of old age / the last months before harvest

high season, peak season (in the tourist industry, the period of highest demand)

low season (in the tourist industry, the period of lowest demand)

off-season

rainy season

mating season (time of year during which animals mate)

seasonal worker