Juli is warm.

In Dutch, the names of months are not capitalized unless they begin a sentence. So:

• juli = July
• maandag = Monday
• nederlands can also be lowercase in some uses, depending on context

This is different from English, where July must always be capitalized.

Dutch normally uses subject + verb + rest of sentence in a main clause, just like English.

So:

• Juli = subject
• is = verb
• warm = adjective/complement

That gives:

• Juli is warm.

The order Juli warm is is not correct in a normal main clause.

Is is the third-person singular form of the verb zijn, which means to be.

Examples:

• Ik ben = I am
• jij bent = you are
• hij is = he is
• juli is = July is

So in this sentence, is simply means is.

Yes, very much so. Warm in Dutch is an adjective meaning warm.

In Juli is warm, it describes the month of July.

A few more examples:

• Het water is warm. = The water is warm.
• Vandaag is warm. = Today is warm.
  (Though Dutch speakers would more naturally say Het is vandaag warm.)

So the meaning is very close to English.

Dutch can talk about months directly, just like English:

• Juli is warm. = July is warm.

You do not need a preposition here. The month itself is the subject of the sentence.

You could also say other things like:

• In juli is het warm. = In July it is warm.

That version focuses more on the time period in July, while Juli is warm treats July itself as the topic.

No. After the verb zijn (to be), Dutch usually uses the adjective in its basic form.

So:

• Juli is warm.
• Het water is koud.
• De koffie is lekker.

You usually see -e in front of a noun:

• de warme zomer = the warm summer
• een warme dag = a warm day

But after is, you use just warm.

Yes, it is grammatical and understandable. It means July is warm.

That said, in everyday speech, Dutch speakers might more often say:

• In juli is het warm. = In July it is warm.
• Juli is een warme maand. = July is a warm month.

These can sound a bit more natural depending on context, but Juli is warm is still a correct sentence.

Juli is pronounced approximately like YOO-lee.

A rough guide:

• ju sounds a bit like yü / yu
• li sounds like lee

The j in Dutch is usually pronounced like the English y in yes, not like the English j in July.

So juli does not start with an English j sound.

Sometimes, yes, but in Juli is warm, it clearly refers to temperature/weather, not personality.

Dutch warm can be used literally and sometimes figuratively, but with a month name it will normally mean warm in climate or weather.

Because juli itself is the subject in Juli is warm.

Compare these two patterns:

• Juli is warm.
  = July is warm.

• Het is warm in juli.
  = It is warm in July.

In the first sentence, the month is the thing being described.
In the second, het is a dummy subject, like English it in weather expressions.

Both are correct, but they are structured differently.

Yes, absolutely. That means July is a warm month.

This version is often a bit more specific because it names maand (month). It also shows the adjective with -e because it comes before the noun:

• een warme maand = a warm month

So compare:

• Juli is warm. = July is warm.
• Juli is een warme maand. = July is a warm month.

It is still a proper noun because it is the name of a month, but Dutch spelling rules do not capitalize month names. So it behaves like a proper name in meaning, even though it is written lowercase.

That is why English speakers often find it surprising.