Тебе сегодня повезёт.

Because Russian uses the dative case with the verb повезти / везти in this meaning.

So in Тебе сегодня повезёт, тебе literally means something like to you. Russian expresses this idea as luck will happen to you or it will go luckily for you, not with you as a normal subject in the nominative.

• ты = you as the subject
• тебе = to you / for you

This is very common in Russian with impersonal expressions:

• Мне холодно. = I am cold.
• Ему повезло. = He was lucky.

Here повезёт means will be lucky or will have good luck.

It is the future tense form of повезти in the sense of to be lucky for someone.

So:

• повезло = was lucky
• повезёт = will be lucky

In this sentence, it means:

• You’ll be lucky today
• You’ll have good luck today

Yes — it is the same verb form, but the meaning depends on context.

повезти can mean:

1. to take / carry / transport someone somewhere
2. to be lucky for someone

Examples:

• Я повезу детей в школу. = I’ll drive / take the children to school.
• Мне повезло. = I was lucky.

In Тебе сегодня повезёт, only the luck meaning makes sense.

This is one of those cases where Russian has one form with different meanings, and context tells you which one is intended.

Because this is an impersonal construction in Russian.

English often needs a subject, even a dummy one like it:

• It will be good
• It seems
• It was lucky

Russian often does not use a dummy subject in such sentences. So Тебе сегодня повезёт is natural without any word for it.

The structure is basically:

• тебе = for you / to you
• повезёт = will be lucky

So Russian says the idea without an explicit subject.

Yes, the word order can change.

Russian word order is fairly flexible, and the basic meaning stays the same:

• Тебе сегодня повезёт.
• Сегодня тебе повезёт.
• Повезёт тебе сегодня.

These all mean roughly You’ll be lucky today, but the emphasis changes.

Typical nuances:

• Тебе сегодня повезёт. = neutral
• Сегодня тебе повезёт. = emphasis on today
• Повезёт тебе сегодня. = emphasis on the event of being lucky, sometimes more expressive

So the middle position of сегодня is just a natural neutral order.

Yes, it matters.

Повезёт is pronounced with yo: pa-vye-ZYOT.

The ё shows both:

• the sound yo
• the stress

So повезёт is stressed on the last syllable.

In many printed texts, Russian often writes е instead of ё, so you may see повезет. But it still means the same word, and the correct pronunciation is still повезёт.

For learners, keeping ё is very helpful.

A helpful approximation is:

tye-BYE se-VOD-nya pa-vye-ZYOT

Stress:

• тебе́
• сего́дня
• повезёт

A few pronunciation notes:

• тебе sounds like tye-BYE
• сегодня is pronounced closer to si-VOD-nya or sye-VOD-nya depending on speech style
• повезёт has stressed ё, so the end is clearly -ZYOT

Тебе сегодня повезёт is the natural, idiomatic way to say You’ll be lucky today.

Ты сегодня будешь удачливым is grammatical, but it sounds less natural in most everyday situations. It describes a person as lucky as a quality, while повезёт usually refers to luck in events or circumstances.

So:

• Тебе сегодня повезёт = Luck will go your way today
• Ты сегодня будешь удачливым = You will be a lucky person today, which sounds less idiomatic

Russian strongly prefers повезти for this idea.

Normally, no.

In Russian, Тебе сегодня повезёт is a general statement about good luck. It does not automatically carry the sexual meaning that English get lucky sometimes has.

If context strongly pushed it in that direction, people might joke with it, but by itself it simply means:

• You’ll be lucky today
• Things will go well for you today

So learners should not assume that English idiomatic meaning here.

Use Вам instead of тебе:

• Вам сегодня повезёт.

That means You’ll be lucky today when speaking politely to one person or to more than one person.

So:

• тебе = informal singular
• Вам = formal singular or plural

The past version is:

• Тебе сегодня повезло.

That means You were lucky today or You got lucky today in the general sense of luck.

Compare:

• Тебе сегодня повезёт. = You’ll be lucky today
• Тебе сегодня повезло. = You were lucky today

This pair is very common and useful to learn together.

It can be any of those, depending on context and tone.

Most often it sounds like:

• a prediction: You’ll be lucky today
• a bit of encouragement: Things will go well for you today

It is not usually a firm promise, because luck is outside the speaker’s control. So the natural feel is often something like:

• I have a feeling today will go well for you
• Looks like today is your lucky day

Tone matters a lot in Russian, just as in English.