Obviamente, o envio chegou hoje.

Obviamente means obviously. It is an adverb commenting on the whole sentence, not just one word.

In this sentence, it shows the speaker’s attitude: they think the fact that the shipment arrived today is clear, expected, or self-evident.

In Portuguese, sentence adverbs like obviamente, naturalmente, felizmente, and provavelmente are often placed at the beginning of the sentence, especially in writing.

You could also hear:

• O envio chegou hoje, obviamente.
• O envio obviamente chegou hoje.

But the version with Obviamente at the start is very natural.

The comma is used because Obviamente is functioning as a sentence adverb, set off from the main statement.

So:

• Obviamente, o envio chegou hoje.

This is similar to English:

• Obviously, the shipment arrived today.

In informal writing, some people may leave the comma out, but with this structure, the comma is standard and recommended.

Portuguese often uses the definite article where English might not.

So o envio literally means the shipment / the sending / the dispatch.

The article o tells us we are talking about a specific, identifiable shipment. Even if English might sometimes say simply shipment arrived today, Portuguese normally prefers the article:

• O envio chegou hoje.

Without the article, envio would sound more like a general concept or a dictionary form, not a normal complete noun phrase in this context.

Envio comes from the verb enviar (to send). As a noun, it can mean:

• sending
• shipment
• dispatch

In context, it usually refers to something that was sent.

In European Portuguese, envio is understandable, but depending on context, other words may be more common in everyday speech, such as:

• encomenda = parcel / order
• entrega = delivery

So o envio chegou hoje is correct, but in many real-life situations a Portuguese speaker might more naturally say:

• A encomenda chegou hoje.

Chegou is the pretérito perfeito simples of chegar (to arrive), third person singular.

That means it expresses a completed action in the past:

• cheguei = I arrived
• chegaste = you arrived
• chegou = he/she/it arrived

Here, o envio is singular, so the verb is also singular:

• O envio chegou hoje.

Even though hoje means today, Portuguese still uses the past tense because the arrival has already happened.

This is very normal:

• Cheguei hoje. = I arrived today.
• A carta chegou hoje. = The letter arrived today.

Yes. Chegar is the normal verb for to arrive, and it is commonly used for objects, parcels, deliveries, letters, and so on.

For example:

• A encomenda chegou. = The parcel arrived.
• A carta chegou ontem. = The letter arrived yesterday.
• O envio chegou hoje. = The shipment arrived today.

So this use is completely natural.

Hoje means today, and placing time expressions at the end of the sentence is very common in Portuguese.

So:

• O envio chegou hoje.

is a very natural word order.

You can move hoje for emphasis:

• Hoje, o envio chegou.
• O envio hoje chegou.

But the most neutral and natural version is usually:

• O envio chegou hoje.

Yes, envio is masculine, which is why it takes o:

• o envio

You often learn noun gender together with the article:

• o envio
• a encomenda
• a entrega

The ending -o often suggests a masculine noun, though not always. In this case, envio is indeed masculine.

It sounds mostly neutral to slightly formal, especially because of envio and obviamente.

• Obviamente is perfectly normal, but a bit more polished than very casual speech.
• O envio is correct, though in everyday conversation people may more often say a encomenda if they mean a parcel.

A more everyday version might be:

• Obviamente, a encomenda chegou hoje.

So the original sentence is not strange, but it may sound a little more written or administrative depending on context.

A rough European Portuguese pronunciation guide would be:

• Obviamente → roughly ob-vya-MEN-te
• o envio → roughly u en-VEE-u
• chegou → roughly sheh-GOH or shuh-GOH
• hoje → roughly OH-zh(uh)

A few useful points for European Portuguese:

• o as an unstressed article often sounds like u
• ch in chegou sounds like sh
• j in hoje sounds like the s in measure
• Unstressed vowels are often reduced more strongly than in Brazilian Portuguese

So the whole sentence sounds approximately like:

• Obviamente, u en-VEE-u shuh-GOH OH-zh(uh).

That is only an approximation, but it helps with the main sounds.