Teet är lagom varmt nu.

Because teet is the definite singular form of ett te.

• te = tea
• ett te = a tea / a tea drink
• teet = the tea

In Swedish, the definite article is usually added as an ending, not written as a separate word like English the.

So:

• te
  • -et → teet

It looks a little unusual because the word already ends in e, but this spelling is normal.

Because Swedish usually puts the at the end of the noun instead of before it.

So English:

• the tea

becomes Swedish:

• teet

This is one of the biggest differences from English. The definiteness is built into the noun itself.

Because varmt agrees with teet, which is an ett-word (a neuter noun).

In Swedish, adjectives often change form depending on the gender and number of the noun.

With an en-word:

• soppan är varm = the soup is warm

With an ett-word:

• teet är varmt = the tea is warm

So the -t on varmt is there because te is an ett noun.

It is a predicate adjective here.

That means it comes after är and describes the subject:

• Teet är varmt = The tea is warm

Compare that with an adjective directly before a noun:

• ett varmt te = a warm tea

Both use varmt because te is an ett-word, but the grammar role is a little different.

Here, lagom modifies varmt.

So lagom varmt means something like:

• warm enough
• pleasantly warm
• just the right temperature

A very literal one-word English translation often does not work well for lagom. It usually means not too much, not too little; just right in a practical or comfortable way.

In this sentence, it means the tea has reached a good drinking temperature.

In standard Swedish, lagom is the normal form.

It does not change here:

• Teet är lagom varmt

You may sometimes hear lagomt in some dialects or colloquial speech, but lagom is the standard form learners should use.

Here it is functioning like an adverb, because it modifies the adjective varmt.

It answers the question how warm?

• varmt = warm
• lagom varmt = just-right warm / comfortably warm

So in this sentence, lagom is not describing teet directly by itself; it is qualifying the adjective.

Because Swedish often puts time words like nu in a later position in a simple statement.

• Teet är lagom varmt nu.

This is completely natural and means the tea is now the right temperature.

You can also say:

• Nu är teet lagom varmt.

That is also correct. Swedish allows this kind of movement, but then the verb must still stay in second position.

Yes, absolutely.

Both are natural:

• Teet är lagom varmt nu.
• Nu är teet lagom varmt.

The difference is mainly emphasis:

• Teet är lagom varmt nu focuses first on the tea
• Nu är teet lagom varmt focuses first on now

This is a good example of Swedish V2 word order: if you move nu to the front, the verb är must come immediately after it.

It is pronounced as two syllables, roughly:

• te-et

The two e letters do not turn it into one strange long block. You should hear the definite ending.

A careful learner-friendly way to think of it is:

• te
  • et

So say the base word and then the ending.

Yes, varmt is very natural here.

For drinks:

• hett suggests hot, possibly too hot to drink comfortably
• varmt is more neutral: warm
• lagom varmt is especially natural when you mean pleasant to drink now

So this sentence suggests the tea is no longer too hot and is now at a comfortable temperature.

Here it normally means a specific tea, usually the tea someone is about to drink or is talking about right now.

So it is not tea in general as a substance. It is more like:

• the tea here
• this particular tea

In everyday Swedish, that is completely normal.

Yes, if you want to say my tea specifically.

• Mitt te är lagom varmt nu.

That sounds natural too.

The difference is:

• Teet är lagom varmt nu = the tea is the right temperature now
• Mitt te är lagom varmt nu = my tea is the right temperature now

So adding mitt makes it possessive rather than just definite.