Om vi har tur, kan vi sitta på balkongen i kväll också.

Because Swedish follows the V2 rule in main clauses: the finite verb must come in the second position.

The first part, Om vi har tur, is a subordinate clause meaning if we’re lucky. After that comes the main clause, and in the main clause the finite verb must come first if something else has already taken the first slot.

So:

• Om vi har tur, kan vi sitta på balkongen i kväll också.
• literally: If we have luck, can we sit on the balcony tonight too.

Compare:

• Vi kan sitta på balkongen i kväll också. = We can sit on the balcony tonight too.
• I kväll kan vi sitta på balkongen också. = Tonight we can sit on the balcony too.

In each case, whatever comes first is followed by the finite verb.

Swedish often uses the present tense where English might also use the present tense in an if-clause.

So:

• Om vi har tur = If we’re lucky
• literally: If we have luck

This is completely normal. Swedish does not usually use a special future tense here.

Compare:

• Om det regnar, stannar vi hemma. = If it rains, we stay home.
• Om jag hinner, kommer jag. = If I have time / if I manage, I’ll come.

So har is just the natural present-tense form in this kind of condition.

Ha tur is a very common Swedish expression meaning to be lucky or to have luck.

So:

• vi har tur = we are lucky
• literally: we have luck

This is a standard idiomatic expression. Similar phrases include:

• Jag hade tur. = I was lucky.
• Hon har otur. = She is unlucky.
• Vilken tur! = What luck! / How lucky!

So even though English usually says be lucky, Swedish often says have luck.

In Swedish, på balkongen is the normal way to say on the balcony.

• på = on
• balkongen = the balcony

A balcony is thought of as a surface/space you are on, not something you are inside, so på is the natural preposition.

Compare:

• sitta på balkongen = sit on the balcony
• sitta på terrassen = sit on the terrace
• sitta i köket = sit in the kitchen

So på here matches the normal Swedish way of talking about balconies.

Balkongen is the definite form, meaning the balcony.

Swedish often attaches the definite article to the end of the noun:

• en balkong = a balcony
• balkongen = the balcony

So:

• på balkongen = on the balcony

This works because the sentence refers to a specific balcony, probably the one at the speaker’s home.

I kväll is normally written as two words in standard Swedish.

It means this evening / tonight.

• i = originally the preposition in
• kväll = evening

So the phrase is historically like in the evening, but as a fixed time expression it means tonight / this evening.

You may sometimes see ikväll too, and that spelling does occur, but i kväll is the traditional standard form and is still very common.

Related expressions:

• i dag = today
• i morgon = tomorrow
• i natt = tonight / during the night

Också means also or too.

In this sentence, putting it at the end makes it sound like too / as well in English:

• ...i kväll också = ...tonight too / tonight as well

So the idea is probably that they were able to sit on the balcony before, and maybe they can do it again tonight.

Word order with också can vary depending on emphasis. For example:

• Vi kan också sitta på balkongen i kväll. = We can also sit on the balcony tonight.
• Vi kan sitta på balkongen i kväll också. = We can sit on the balcony tonight too.

The end position often feels natural when adding too/as well to the whole idea.

Kan is the present tense of kunna, which usually means can / be able to.

Here it expresses possibility or ability due to circumstances:

• kan vi sitta på balkongen = we can sit on the balcony

Because the sentence begins with Om vi har tur (If we’re lucky), the idea is not just ability in general, but something like:

• If we’re lucky, we’ll be able to sit on the balcony tonight too.

So kan works very naturally here.

The comma is normal and helpful here because the sentence starts with a subordinate clause.

• Om vi har tur, kan vi sitta på balkongen i kväll också.

In modern Swedish, commas are often used less heavily than in English, but a comma after an introductory subordinate clause is very common and makes the sentence easier to read.

You may sometimes see it omitted in informal writing, but using it here is perfectly standard.

Yes, but the meaning or emphasis can shift slightly.

Current sentence:

• Om vi har tur, kan vi sitta på balkongen i kväll också.

This most naturally means we can sit on the balcony tonight too/as well.

Other possibilities:

• Om vi har tur, kan vi också sitta på balkongen i kväll.

  • This can emphasize also can, as in we can also sit on the balcony tonight.

• Om vi har tur, också kan vi...

  • This is not natural Swedish.

So också is flexible, but not completely free. Its placement depends on what is being emphasized.

It can correspond to tonight or this evening, depending on context.

• i kväll often refers to the evening of the current day
• in English, that may be translated as this evening
• but in many contexts tonight sounds more natural

So in this sentence, both could work depending on the translation style:

• If we’re lucky, we can sit on the balcony this evening too.
• If we’re lucky, we can sit on the balcony tonight too.

The Swedish itself is completely natural either way.

No, that would be incorrect in standard Swedish.

After the introductory clause Om vi har tur, the main clause must follow normal V2 word order, so the finite verb comes before the subject:

• correct: Om vi har tur, kan vi sitta...
• incorrect: Om vi har tur, vi kan sitta...

This is one of the most important word-order patterns in Swedish, especially for English speakers to get used to.