Τον Ιούλιο πηγαίνουμε συχνά στη θάλασσα, αλλά το βράδυ παίρνω και μια λεπτή ζακέτα.

Because Greek often uses the accusative case for expressions of time.

• Τον Ιούλιο = in July
• Literally, it is the July in the accusative.

This is very common with months and other time expressions:

• Τον Αύγουστο = in August
• Τη Δευτέρα = on Monday
• Το βράδυ = in the evening / at night

So here Τον Ιούλιο is not the subject. It is a time phrase.

Because the subject changes in the second part of the sentence.

• πηγαίνουμε = we go
• παίρνω = I take

Greek often leaves out subject pronouns when the verb ending already shows who the subject is.

So:

• πηγαίνουμε already means we go
• παίρνω already means I take

The sentence means something like:

• In July we often go to the beach/sea, but in the evening I also take a light cardigan.

Even though we go, the speaker then says that I take a cardigan.

συχνά means often.

In this sentence:

• πηγαίνουμε συχνά στη θάλασσα = we often go to the sea/beach

Greek adverbs like συχνά are fairly flexible in position, but some placements sound more natural than others. Here it comes after the verb, which is very normal.

You may also see:

• Συχνά πηγαίνουμε στη θάλασσα
• Πηγαίνουμε στη θάλασσα συχνά

All are possible, but the original version is very natural.

στη is a contraction of:

• σε = to / in / at
• τη(ν) = the (feminine accusative)

So:

• σε τη θάλασσα becomes στη θάλασσα

This is extremely common in modern Greek:

• στο = σε το
• στη(ν) = σε τη(ν)
• στους = σε τους
• στις = σε τις

So στη θάλασσα means to the sea/beach.

Greek very often uses the definite article where English may or may not use one.

So:

• πηγαίνω στη θάλασσα literally = I go to the sea
• In natural English, this is often translated as I go to the beach

In Greek, using the article here is normal and expected. It does not sound overly specific.

Literally, θάλασσα means sea.

But in everyday Greek, πηγαίνω στη θάλασσα often means go to the seaside / go to the beach for swimming or relaxing.

So depending on context, the most natural English translation may be:

• go to the sea
• go to the beach
• go to the seaside

All can fit.

το βράδυ is another time expression in the accusative.

It means:

• in the evening
• sometimes at night, depending on context

Just like Τον Ιούλιο, it is not the subject. It tells you when something happens.

Compare:

• το πρωί = in the morning
• το μεσημέρι = at noon / in the middle of the day
• το απόγευμα = in the afternoon
• το βράδυ = in the evening

So Greek very commonly uses article + accusative noun for time expressions.

In this sentence, και means also / too.

• παίρνω και μια λεπτή ζακέτα = I also take a light cardigan

Greek και can mean:

• and
• also
• too
• sometimes even even, depending on context

Here it adds an extra item or action: besides going to the sea, the speaker also takes a cardigan in the evening.

So this και is not simply joining two nouns. It has the sense of in addition.

Yes, παίρνω basically means take, but in context it often means:

• take with me
• bring along
• grab

So here:

• παίρνω και μια λεπτή ζακέτα means I also take/bring along a light cardigan

A very natural English translation would be:

• I also take a light cardigan
• I also bring a light cardigan along

Because ζακέτα is:

• feminine
• singular
• accusative

The adjective has to agree with the noun in gender, number, and case.

So:

• μια = a / one (feminine)
• λεπτή = light/thin/slim (feminine singular accusative/nominative form)
• ζακέτα = cardigan (feminine singular accusative)

This is adjective agreement.

You can compare:

• ένας λεπτός άντρας = a slim man
• μια λεπτή ζακέτα = a light/thin cardigan
• ένα λεπτό βιβλίο = a thin book

Here λεπτή means light/thin, not slim.

Because ζακέτα is a feminine noun.

Greek indefinite articles agree with gender:

• ένας = a (masculine)
• μια / μία = a (feminine)
• ένα = a (neuter)

Since ζακέτα is feminine, the correct form is μια.

It is in the accusative singular because it is the direct object of παίρνω.

• παίρνω τι; = what do I take?
• μια λεπτή ζακέτα

For many feminine nouns in -α, the nominative and accusative singular look the same, so the form does not change visibly.

Example:

• Nominative: η ζακέτα
• Accusative: τη ζακέτα

So in this sentence, ζακέτα is accusative even though it looks the same as the dictionary form.

Literally, λεπτή often means thin.

But with clothing, it usually means:

• light
• lightweight
• thin

So μια λεπτή ζακέτα is a cardigan that is not heavy, which makes sense for a summer evening.

A natural English translation is usually a light cardigan.

Greek word order is more flexible than English word order, because verb endings and articles help show grammatical relationships.

The original sentence is very natural:

• Τον Ιούλιο πηγαίνουμε συχνά στη θάλασσα, αλλά το βράδυ παίρνω και μια λεπτή ζακέτα.

But other arrangements are possible for emphasis, for example:

• Πηγαίνουμε συχνά στη θάλασσα τον Ιούλιο...
• Αλλά το βράδυ παίρνω και μια λεπτή ζακέτα.
• Και μια λεπτή ζακέτα παίρνω το βράδυ.
  This one gives stronger emphasis to the cardigan.

So the original order is not the only possible one, but it is smooth and standard.

Because αλλά means but, and in Greek it normally introduces a contrasting clause.

So the comma separates the two parts:

• Τον Ιούλιο πηγαίνουμε συχνά στη θάλασσα
• αλλά το βράδυ παίρνω και μια λεπτή ζακέτα

This is similar to English punctuation with but.

Not exactly.

• βράδυ = evening
• νύχτα = night

In real usage, the border can sometimes feel a little flexible, but generally:

• το βράδυ = in the evening
• τη νύχτα = at night / during the night

In this sentence, το βράδυ makes sense because evenings can become cooler, so the speaker takes a light cardigan.