Breakdown of Jesienią pogoda w mieście szybko się zmienia.
w
in
szybko
quickly
miasto
the city
pogoda
the weather
Questions & Answers about Jesienią pogoda w mieście szybko się zmienia.
What form is Jesienią, and why does it mean “in autumn”?
Jesienią is the instrumental singular form of jesień (autumn).
Polish often uses the instrumental of season names as an adverbial time expression, meaning “in [that season]”:
- wiosną – in spring
- latem – in summer
- jesienią – in autumn / in the fall
- zimą – in winter
So Jesienią at the beginning of the sentence means “In autumn / In the fall”.
Could I say W jesieni or Na jesieni instead of Jesienią?
You might hear these, but they’re not all equally neutral:
- Jesienią – the most natural, standard way to say “in autumn”.
- Na jesieni – also used, but sounds a bit more colloquial or regional; often used in spoken language, especially in some areas.
- W jesieni – grammatically possible but unusual and stylistically awkward in modern Polish; generally avoid it.
For a learner, Jesienią is the best and safest choice.
What case is w mieście, and why isn’t it w miasto?