A novembre il vento è freddo, quindi porto sempre la sciarpa.

In Italian, months usually take a when you mean in a certain month in a general time sense:

• a novembre = in November
• a dicembre = in December

Using in with months is much less common in standard everyday Italian. So a novembre is the normal choice here.

Italian often uses the definite article to talk about things in a general sense:

• Il vento è freddo = The wind is cold / Wind is cold
• Il pane è buono = Bread is good
• La musica mi piace = I like music

English often drops the article in these general statements, but Italian usually keeps it.

These mean different things.

• Il vento è freddo = the wind is cold
• Fa freddo = it is cold / the weather is cold

In your sentence, the speaker is specifically describing the wind, not just the temperature in general. So è freddo is the right structure.

Italian usually leaves out subject pronouns when they are not needed, because the verb ending already shows who is doing the action.

• porto = I wear / I carry
• porti = you wear / you carry
• porta = he/she wears / carries

So porto sempre la sciarpa already clearly means I always wear the scarf.
You could say io porto for emphasis, but it is not necessary.

It can mean either, depending on context. In this sentence, because we are talking about cold wind and a scarf, porto la sciarpa naturally means:

• I wear a scarf
• or more literally, I have a scarf on

With clothing and accessories, portare is often used in Italian to mean to wear, especially in everyday speech.

Yes. Indossare also means to wear, and it is very clear when talking about clothes.

• Porto sempre la sciarpa = I always wear a scarf
• Indosso sempre la sciarpa = I always wear a scarf

Portare is very common and natural in everyday Italian.
Indossare is a bit more specific and explicitly means to wear on the body.

Italian usually uses an article with singular countable nouns, even where English sometimes does not.

So:

• porto sempre la sciarpa = I always wear the scarf / I always wear a scarf

In natural English, we often just say I always wear a scarf, but Italian normally includes the article. In this kind of sentence, la sciarpa can sound like a general habitual item, not necessarily one specific scarf every time.

Yes, and the nuance changes slightly.

• porto sempre la sciarpa = I always wear a scarf / I always wear my scarf / scarf-wearing is my habit
• porto sempre una sciarpa = I always wear a scarf, with a bit more focus on a scarf as one item among possible options

Both are possible. La sciarpa sounds very natural when talking about a regular habit.

In Italian, adverbs like sempre often come after the verb:

• porto sempre la sciarpa
• mangio sempre presto
• arriva sempre tardi

So the pattern here is very normal:

• verb + adverb + object

You may sometimes see different word order for emphasis, but porto sempre la sciarpa is the most neutral and natural.

Quindi means therefore, so, or therefore as a result.

In this sentence:

• A novembre il vento è freddo, quindi porto sempre la sciarpa.
• In November the wind is cold, so I always wear a scarf.

It links cause and result:

• cold wind -> wearing a scarf

Yes, sometimes. For example:

• A novembre il vento è freddo, quindi porto sempre la sciarpa.
• A novembre il vento è freddo; porto quindi sempre la sciarpa.

But the original version is the most straightforward and natural for learners. Putting quindi between the two clauses is very common.

Italian often puts a time expression at the beginning to set the scene:

• A novembre = in November
• then the main statement follows

This is similar to English:

• In November, the wind is cold, so...

It helps frame the whole sentence as a general fact about that time of year.

Usually it is understood as a general or habitual statement about November as a time of year.

• A novembre il vento è freddo = In November, the wind is cold
• porto sempre la sciarpa = I always wear a scarf

So the sentence sounds like a repeated habit or seasonal truth, not one single event.

È is the third-person singular form of essere (to be):

• il vento è freddo = the wind is cold

The subject is il vento, which is singular, so è is the correct form.

Not in this context. Grammatically portare can mean to carry / to take, but here the clothing context makes wear the correct meaning.

If you wanted to say I always take the scarf with me, Italian would more likely say something like:

• porto sempre con me la sciarpa

That con me makes the meaning clearly about carrying it along, not wearing it.