من امیدوارم که آخر هفته باران نیاید، چون احتمالا میخواهیم کنار دریا بنشینیم.

In Persian, subject pronouns are often omitted because the verb or predicate ending already tells you the person.

So:

• امیدوارم already means I hope / I am hopeful
• من امیدوارم adds من for clarity, emphasis, or a slightly more explicit style

Both are possible. In many contexts, Persian speakers would simply say امیدوارم که...

امیدوارم is basically امیدوار + -م.

• امیدوار = hopeful
• -م = I am / my first-person marker in this kind of structure

So literally it is something like I am hopeful, but in real usage it often means I hope.

You can also say:

• امیدوار هستم = I am hopeful
• امیدوارم = same idea, shorter and very common

که means that and introduces the following clause.

So:

• امیدوارم که باران نیاید = I hope that it won’t rain

In English, that is often optional, and the same is true here to some extent. Persian speakers sometimes omit که, especially in speech, but keeping it is very natural and clear.

Persian does not have a definite article like English the.

So:

• آخر هفته can mean the weekend
• دریا can mean the sea

Whether something is definite or indefinite is usually understood from context. That is very normal in Persian.

Persian often uses time expressions directly, without needing a preposition like English at or on.

So:

• آخر هفته = at the weekend / on the weekend

This is a common pattern in Persian. Time expressions often work adverbially by themselves.

Because after verbs and expressions like I hope, Persian usually uses the subjunctive.

Here:

• نیاید = negative subjunctive, may not come
• نمی‌آید = indicative, does not come / is not coming

So:

• امیدوارم که باران نیاید = I hope it won’t rain

That is the natural structure after امیدوارم.

That is a very common Persian way to talk about rain.

• باران می‌آید = it is raining / it rains
• literally: rain comes

Persian also has the verb باریدن = to rain, so you may also see forms like:

• باران نبارد

But باران بیاید / نیاید is extremely common and natural in everyday Persian.

For the same reason من can be omitted: Persian usually does not need subject pronouns when the verb already shows the person.

• می‌خواهیم already means we want / we are going to
• so ما is optional

If you add ما, it can sound more emphatic or contrastive:

• ما می‌خواهیم... = we want to...

Persian very often uses the present form for future meaning, especially for intentions, plans, and likely actions.

So می‌خواهیم کنار دریا بنشینیم can naturally express:

• we want to sit by the sea
• we’re planning to sit by the sea
• we’ll probably sit by the sea

The exact English translation depends on context, but the Persian structure is very normal.

After خواستن (to want), Persian normally uses the subjunctive form of the next verb.

So:

• می‌خواهیم بنشینیم = we want to sit

Here:

• نشستن = to sit
• بنشینیم = subjunctive form, that we sit / to sit

This is a standard pattern:

• می‌خواهم بروم = I want to go
• می‌خواهند بخورند = they want to eat

There is a connector in pronunciation: the ezafe.

So کنار دریا is pronounced:

• kenâr-e daryâ

That -e links the two words, but short vowels are usually not written in normal Persian spelling. So the ezafe is heard, but not usually seen.

Meaning:

• کنار دریا = beside the sea / by the sea

The standard spelling is می‌خواهیم with a half-space, also called a zero-width non-joiner.

So:

• standard: می‌خواهیم
• very common informal typing: میخواهیم

Both are widely understood, but می‌خواهیم is the more correct standard written form.

احتمالا means probably.

It shows that the speaker is not stating the plan with complete certainty. So:

• می‌خواهیم کنار دریا بنشینیم = we want / plan to sit by the sea
• احتمالا می‌خواهیم کنار دریا بنشینیم = we will probably want / probably plan to sit by the sea

In standard spelling, you may also see it written as احتمالاً.