Το βράδυ δροσίζομαι στο μπαλκόνι.

In Greek, some time expressions work without a preposition.
Το βράδυ is an adverbial time expression meaning in the evening / at nightfall / during the evening, depending on context.

This is very common with parts of the day:

• το πρωί = in the morning
• το μεσημέρι = at noon / in the midday
• το απόγευμα = in the afternoon
• το βράδυ = in the evening

So here το βράδυ is not the subject. It is telling you when the action happens.

Greek very often uses the definite article in fixed time expressions like this. So το βράδυ is the normal way to say in the evening.

This is just something learners get used to, because English often leaves the article out where Greek keeps it.

Compare:

• το πρωί = in the morning
• το βράδυ = in the evening

So the article is not making it mean the evening in a literal, specific sense the way it often would in English. It is part of the normal Greek expression.

Δροσίζομαι means I cool off, I get refreshed, or I freshen up from the heat.

It comes from δροσίζω, which in the active voice usually means I cool something or I refresh something.
But δροσίζομαι is the middle/passive form and is used intransitively here, meaning that you yourself become cool/refreshed.

So:

• δροσίζω το δωμάτιο = I cool the room
• δροσίζομαι = I cool off / I get refreshed

This is very common in Greek. The form ending in -ομαι is the mediopassive form, but that does not always mean a true passive like I am cooled by someone.

Often it has a meaning that English expresses with an ordinary active verb:

• κάθομαι = I sit
• θυμάμαι = I remember
• εργάζομαι = I work
• δροσίζομαι = I cool off

So in this sentence, δροσίζομαι is best understood as a normal Greek verb meaning I cool off, not as a literal passive.

Not exactly. It can feel a bit reflexive in origin, but in normal use it usually just means I cool off or I refresh myself in a natural, everyday way.

So an English speaker should usually not over-translate it as I cool myself.
That sounds too literal in English.

In this sentence, the natural idea is simply that the speaker goes out on the balcony and feels cooler there.

Because Greek usually does not need subject pronouns. The verb ending already tells you the subject.

Δροσίζομαι ends in -ομαι, which here shows first person singular: I cool off.

So εγώ is not necessary.

You could add εγώ only for emphasis or contrast:

• Εγώ δροσίζομαι στο μπαλκόνι, όχι μέσα στο σπίτι.
  = I cool off on the balcony, not inside the house.

Because στο is the normal contraction of σε + το.

So:

• σε + το = στο
• σε + τη(ν) = στην
• σε + τον = στον

Therefore:

• στο μπαλκόνι = on the balcony / at the balcony

This contraction is extremely common and is what you would normally say.

Greek σε covers several location meanings that English splits into in, on, and at.

So στο μπαλκόνι is the normal Greek way to say on the balcony.

A few similar examples:

• στο σπίτι = in the house / at home
• στο τραπέζι = on the table
• στο γραφείο = at the office / in the office

So you should not expect a one-to-one match between Greek σε and a single English preposition.

Yes. After σε, Greek normally uses the accusative.

So in στο μπαλκόνι, μπαλκόνι is functioning as accusative.
It just happens to look identical to the nominative because it is a neuter noun.

For many neuter nouns, nominative and accusative singular are the same:

• nominative: το μπαλκόνι
• accusative: το μπαλκόνι

So the form does not change, even though the case function does.

It can be either, depending on context, but with το βράδυ it often sounds habitual or regular:

• In the evening, I cool off on the balcony
• I spend the evening cooling off on the balcony

Greek present tense often covers both:

• a general habit
• something happening now
• a repeated routine

If the wider context is about daily life, this sentence will probably be understood as a habit.

Yes. Greek word order is more flexible than English word order because the endings and articles carry more grammatical information.

The sentence as given:

• Το βράδυ δροσίζομαι στο μπαλκόνι.

This is a natural, neutral order.

But you could also say:

• Στο μπαλκόνι δροσίζομαι το βράδυ.
  This puts more focus on the balcony.

• Δροσίζομαι στο μπαλκόνι το βράδυ.
  Also natural, with a slightly different rhythm.

The basic meaning stays the same, but the emphasis can shift.

In Modern Greek, μπ is often pronounced like b, especially at the beginning of a word.

So μπαλκόνι sounds approximately like bal-KO-ni.

A rough pronunciation of the whole sentence is:

• to vra-thi thro-SI-zo-me sto bal-KO-ni

A few useful pronunciation notes:

• β sounds like English v
• δ sounds like the th in this
• ζ sounds like z
• the stress is marked by the accent: βράδυ, δροσίζομαι, μπαλκόνι

Yes. Τα βράδια means in the evenings or on evenings, with a clearer sense of repetition.

Compare:

• Το βράδυ δροσίζομαι στο μπαλκόνι.
  = In the evening / in the evenings, I cool off on the balcony.

• Τα βράδια δροσίζομαι στο μπαλκόνι.
  = In the evenings, I cool off on the balcony.

So τα βράδια often sounds a bit more explicitly habitual or repeated.