Vi spiser is når været er varmt.

In Norwegian, is can mean either ice or ice cream. The context tells you which meaning is intended.

Because the verb is spiser (eat), Norwegian speakers understand is here as ice cream, not frozen water. If you want to be extra specific, you can also say iskrem, but is is very common in everyday speech.

Spiser is the present tense of å spise (to eat).

So:

• å spise = to eat
• spiser = eat / are eating

In this sentence, the present tense is used for a general habit or something that happens regularly: We eat ice cream when the weather is warm.

It can mean either, depending on context, because Norwegian usually uses the simple present where English sometimes uses either simple present or present continuous.

In this sentence, Vi spiser is når været er varmt is normally understood as a general statement:

• We eat ice cream when the weather is warm
• or more naturally in English, We eat ice cream whenever the weather is warm

If you wanted to stress an action happening right now, Norwegian often adds extra words instead of using a special -ing form.

Når is used for when/whenever in the sense of something that happens regularly or whenever a situation occurs.

That fits this sentence well, because it describes a general pattern:

• Vi spiser is når været er varmt = we eat ice cream whenever the weather is warm

Compare:

• når = when / whenever
• da = then, or when referring to a specific time in the past
• hvis = if

So når is the natural choice here.

Vær means weather.
Været means the weather.

Norwegian often adds the definite article at the end of the noun instead of using a separate word like English the.

So:

• vær = weather
• været = the weather

That is why været er varmt literally means the weather is warm.

Because vær is a neuter noun, and adjectives often agree with the noun.

• et vær = a weather condition / weather
• neuter adjective form: varmt

So:

• været er varmt = the weather is warm

Compare with a common-gender noun:

• en dag = a day
• dagen er varm = the day is warm

So the -t in varmt shows neuter agreement.

This sentence is correct, but many Norwegians would very naturally say:

• Vi spiser is når det er varmt.

That literally means We eat ice cream when it is warm, which sounds a lot like natural English.

So:

• når været er varmt = when the weather is warm
• når det er varmt = when it is warm

Both are fine, but når det er varmt is often more everyday and conversational.

Yes. You can say:

• Når været er varmt, spiser vi is.

This means the same thing.

Notice the word order change in the main clause after the fronted når clause:

• Vi spiser is når været er varmt.
• Når været er varmt, spiser vi is.

In the second version, spiser comes before vi. This is a very important Norwegian word order pattern.

Because når været er varmt is a subordinate clause, and subordinate clauses usually keep the normal subject-verb order:

• været er varmt

You do not say:

• når er været varmt in this sentence

That would sound like a question pattern, not a subordinate clause.

So after når, the clause stays in regular statement order.

Yes. Both are correct.

• is = ice cream / ice
• iskrem = ice cream

Is is very common and natural in everyday Norwegian. Iskrem is more explicit, so it can be useful for learners, but native speakers often just say is.

Normally, it describes a repeated habit or general truth.

So the feeling is:

• Whenever the weather is warm, we eat ice cream

If you wanted to describe one specific occasion, the context would usually make that clear, or the sentence might be phrased differently.

Yes, vær can be a little tricky for English speakers.

A few points:

• æ is a vowel sound that does not match ordinary English spelling very neatly
• vær is pronounced with a long vowel
• the final r may sound different depending on the speaker’s dialect

You do not need perfect pronunciation right away, but it helps to listen carefully to native audio for:

• vær
• været
• når

These are short common words, so hearing them in real speech is very useful.