الجو بارد في الشتا.

A common Egyptian pronunciation is:

el-gaww bāred fe sh-sheta

You may also see it written as:

il-gaww bāred fi sh-shita

Both are just different ways of showing the same Egyptian sounds.

A rough breakdown:

• الجو → el-gaww = the weather
• بارد → bāred = cold
• في → fe / fi = in
• الشتا → esh-sheta / ish-shita = the winter

In natural speech, في الشتا often sounds connected, almost like fesh-sheta.

Because in Arabic, the verb to be is usually left out in the present tense.

So:

• الجو بارد literally looks like the weather cold
• but it means the weather is cold

This is completely normal in both Egyptian Arabic and Standard Arabic.

If you wanted a past meaning, then Arabic would use a verb, for example:

• الجو كان بارد = the weather was cold

Because بارد here is a predicate adjective, not an adjective inside a noun phrase.

• الجو بارد = the weather is cold
• الجو البارد = the cold weather

This is an important difference in Arabic:

• If you are describing a noun as part of a noun phrase, the adjective usually matches in definiteness: الجو البارد
• If you are saying something about the noun, you do not put ال on the adjective: الجو بارد

Here, الجو means the weather.

Literally, جو can also mean things like:

• atmosphere
• air
• vibe
• mood

But in very common everyday speech, الجو often means the weather.

In Egyptian Arabic, ج is usually pronounced like g in go, so جو is pronounced gaww, not jaww.

Because it agrees with الجو, which is grammatically masculine singular.

So:

• الجو = masculine singular
• بارد = masculine singular adjective

Even though weather is not a person, Arabic nouns still have grammatical gender, and adjectives match that gender and number.

Yes. الشتا is the Egyptian Arabic form of الشتاء, which is the Standard Arabic word for winter.

So:

• الشتا = Egyptian Arabic
• الشتاء = Standard Arabic

This kind of difference is very common. Egyptian Arabic often shortens or simplifies forms that are longer in Standard Arabic.

If you wanted the Standard Arabic version of the whole sentence, it would be:

الجو بارد في الشتاء

Because ش is a sun letter.

In Arabic, when ال comes before a sun letter, the l sound of ال is not pronounced. Instead, the next consonant is doubled.

So:

• written: الشتا
• pronounced: esh-sheta or ish-shita

You do not say el-sheta in careful pronunciation.

This also happens with many other words, for example:

• الشمس → esh-shams
• النهار → en-nahār

Here, في means something like in or during.

So في الشتا means:

• in winter
• during the winter
• in the wintertime

With seasons and time expressions, في is very common in Egyptian Arabic.

It is talking about winter in general.

Because of في الشتا, the meaning is a general statement:

• الجو بارد في الشتا = the weather is cold in winter

If you say only:

• الجو بارد

that usually means:

• the weather is cold
• the weather is cold right now

So the phrase في الشتا makes it a general seasonal statement.

Not in this sentence if you want the same structure.

• بارد is an adjective meaning cold
• برد can be a noun meaning cold or part of other expressions, but it is not the adjective form used here

So the correct sentence is:

الجو بارد في الشتا

not:

الجو برد في الشتا

If you are learning everyday Egyptian, it is useful to remember:

• بارد = cold, for things like weather, water, food
• بردان = feeling cold, usually for a person

For example:

• أنا بردان = I am cold

Yes. الجو بارد في الشتا is correct and clear, but Egyptians may also say similar things such as:

• الدنيا بتبقى برد في الشتا
• الجو بيبقى بارد في الشتا

These feel a bit more conversational because they use بيبقى, which often gives a habitual or usual meaning:

• الجو بيبقى بارد في الشتا = the weather is usually cold in winter

Your original sentence is still perfectly good and natural, especially for a simple general statement.