I augusti kommer hon tillbaka till kontoret efter semestern.

Because Swedish main clauses usually follow the V2 rule: the finite verb comes in the second position.

In I augusti kommer hon tillbaka till kontoret efter semestern:

• I augusti = first position
• kommer = second position
• hon = subject, placed after the verb

If you start with the subject instead, then you get normal subject-verb order:

Hon kommer tillbaka till kontoret i augusti efter semestern.

Both are correct, but the first version emphasizes when.

Yes. Swedish is fairly flexible with time expressions.

For example:

• I augusti kommer hon tillbaka till kontoret efter semestern.
• Hon kommer tillbaka till kontoret i augusti efter semestern.

Starting with i augusti puts more focus on the time. Putting it later sounds a bit more neutral.

Swedish very often uses the present tense for future meaning when the time is clear from context.

Here, i augusti clearly shows that the event is in the future, so kommer can naturally mean will come / will return.

This is very common in Swedish:

• Jag åker imorgon. = I’m leaving tomorrow.
• Hon kommer tillbaka i augusti. = She’ll come back in August.

You could also say Hon ska komma tillbaka ..., but that adds more of an idea of plan or intention.

Tillbaka means back.

So:

• kommer tillbaka = comes back / returns

It is very common in Swedish to use a verb plus tillbaka to express returning.

Examples:

• Han är tillbaka. = He is back.
• Vi kommer tillbaka imorgon. = We’ll come back tomorrow.

Because they do different jobs:

• tillbaka = back
• till = to

So:

• komma tillbaka till kontoret = come back to the office

If you remove till kontoret, the sentence just means she is coming back without saying where.

Swedish uses i with months and many other time periods.

Examples:

• i augusti = in August
• i september
• i år = this year
• i sommar = this summer

So i augusti is the normal way to say in August.

Because till is used for movement toward a place, while på is used for location at a place.

Compare:

• Hon kommer tillbaka till kontoret. = She comes back to the office.
• Hon är tillbaka på kontoret. = She is back at the office.

So here, since she is returning to the office, till is the right choice.

Because kontoret is the definite singular form of kontor.

• ett kontor = an office
• kontoret = the office

Kontor is a neuter noun (ett-word), so the definite ending is -et.

In this sentence, it means a specific office that is understood from context: the office.

No — this is a very important false friend.

In Swedish, semester usually means:

• vacation
• especially annual leave / holiday from work

It does not usually mean an academic semester.

For an academic semester or term, Swedish normally uses termin.

So here:

• efter semestern = after the vacation / after her holiday

not after the semester in the English school/university sense.

Because the sentence refers to a specific, understood vacation.

• semester = vacation
• semestern = the vacation

In context, this usually means her vacation or the vacation period that both speaker and listener already know about.

So efter semestern is a very natural Swedish phrase meaning after the vacation.

Yes, absolutely.

• efter semestern = after the vacation / after her vacation, when it is already clear from context
• efter sin semester = after her own vacation, stated more explicitly

Both can work, but efter semestern often sounds more natural and idiomatic if the context already makes it obvious whose vacation it is.

Because in Swedish, names of months are normally not capitalized.

So you write:

• augusti
• september
• måndag

not Augusti, September, or Måndag, unless the word starts the sentence.

This is different from English.

Yes. A common alternative is återvänder.

For example:

I augusti återvänder hon till kontoret efter semestern.

That also means In August she returns to the office after the vacation.

The difference is mainly style:

• kommer tillbaka = very common, natural, conversational
• återvänder = a bit more formal or written

Both are correct.