Hann kemur víst á morgun.

In this sentence, víst is an adverb/particle that adds a sense like:

• apparently
• it seems
• I’m told
• sometimes probably or supposedly, depending on context

So Hann kemur víst á morgun is not usually as direct as plain He is coming tomorrow. It suggests the speaker is reporting something they have heard or believe, rather than stating it with complete certainty.

A natural English feeling might be:

• He’s apparently coming tomorrow.
• He’s supposed to be coming tomorrow.
• It seems he’s coming tomorrow.

The exact nuance depends on tone and context.

Icelandic normally follows a verb-second pattern in main clauses. That means the finite verb often comes in the second slot of the sentence.

Here:

• Hann = first element
• kemur = finite verb, so it comes second
• víst á morgun = the rest

So the basic structure is completely normal:

• Hann kemur víst á morgun.

If you move something else to the front, the verb still stays second:

• Á morgun kemur hann víst. = Tomorrow he is apparently coming.

This is a very important pattern in Icelandic word order.

Kemur is the 3rd person singular present tense of the verb koma, meaning to come.

So:

• ég kem = I come / I am coming
• þú kemur = you come / you are coming
• hann/hún/það kemur = he/she/it comes / is coming

In your sentence, hann is he, so kemur matches it correctly:

• Hann kemur = He comes / He is coming

As often happens in Icelandic, the simple present can also refer to a future event when the time is clear from context, such as á morgun.

Because Icelandic, like English, often uses the present tense for future events when there is a time expression that makes the future meaning clear.

Here, á morgun means tomorrow, so even though kemur is present tense, the whole sentence refers to the future:

• Hann kemur á morgun. = He is coming tomorrow.

English does something similar:

• He comes tomorrow or more naturally He’s coming tomorrow

So this is not strange in Icelandic at all.

Á morgun is the normal Icelandic expression for tomorrow.

Even though á often means on, you should learn á morgun as a fixed time expression. Word-for-word, it may feel like on morning, but that is not how it functions in modern Icelandic. As a whole, it simply means:

• á morgun = tomorrow

This is one of those expressions that is best learned as a set phrase.

No. Á morgun means tomorrow, not in the morning.

That can be confusing because morgun is related to morning, but in this expression the full phrase means tomorrow.

If you want to say in the morning, Icelandic usually uses something like:

• á morgnana = in the mornings
• um morguninn or other context-dependent phrases for in the morning

So in your sentence, á morgun definitely refers to the next day, not the time of day.

Yes. Without víst, the sentence becomes more neutral and definite:

• Hann kemur á morgun. = He is coming tomorrow.

With víst, the speaker sounds less fully committed or indicates the information comes from another source:

• Hann kemur víst á morgun. = He’s apparently coming tomorrow.

So víst does not change the basic event, but it changes the speaker’s attitude toward the statement.

In a simple main clause, víst often comes after the finite verb:

• Hann kemur víst á morgun.

That is a very natural position for short adverbs and modal particles in Icelandic.

Depending on emphasis and structure, adverbs can move around somewhat, but this placement is a good standard pattern for learners to recognize.

So a useful model is:

• subject + finite verb + adverb + time expression

Here:

• Hann
  • kemur
    • víst
      • á morgun

In normal Icelandic, the subject is usually expressed, so hann is needed here.

Unlike languages such as Spanish or Italian, Icelandic does not normally drop personal subject pronouns just because the verb ending already shows the person.

So:

• Hann kemur á morgun. = correct
• Leaving out hann would usually not work as a normal standalone sentence unless the context is very special.

A practical learner-friendly approximation is something like veest.

A few points:

• í is a long ee sound
• st at the end is pronounced clearly
• the word has one syllable

So:

• víst ≈ veest

If you want to be more precise, Icelandic pronunciation can vary a bit by speaker and context, but this approximation is good enough to help you recognize and say the word.

Yes. Grammatically, Hann kemur á morgun is literally He comes tomorrow, but in natural English the best translation is often:

• He is coming tomorrow

That is because English usually prefers the progressive for planned future events. Icelandic does not need a separate progressive form in the same way English often does.

So the Icelandic present tense can cover meanings that English may express with either:

• comes
• is coming

Context determines the most natural translation.

In the fixed expression á morgun, you should mainly learn the whole phrase as a unit meaning tomorrow.

More generally, the preposition á can govern different cases depending on meaning, often accusative or dative. In time expressions and idioms, though, it is often best for learners not to overanalyze too early.

So for this sentence, the important practical point is:

• memorize á morgun = tomorrow

Later, as you learn Icelandic cases and prepositions in more depth, you can explore the broader patterns of á.

A common way is to move the time expression to the front:

• Á morgun kemur hann víst.

Because Icelandic is a verb-second language, once Á morgun takes the first position, the finite verb kemur still stays second.

This fronting gives extra focus to tomorrow, something like:

• Tomorrow, apparently, he’s coming.

So word order in Icelandic can help show emphasis, but the verb-second rule still applies.