Mam dziś za mało czasu na spacer.

In Polish, possession is usually expressed with mieć = to have.

• mam = I have
• masz = you have
• ma = he/she/it has

So:

• Mam dziś za mało czasu... = I have too little time today...

Polish does not normally say I am with time the way some languages do. For simple possession, mieć is the standard verb.

Yes. Dziś and dzisiaj both mean today.

• dziś is slightly shorter and often feels a bit more compact or natural in everyday speech.
• dzisiaj is equally correct and very common.

So these both work:

• Mam dziś za mało czasu na spacer.
• Mam dzisiaj za mało czasu na spacer.

The meaning is the same.

Za mało means too little or not enough.

In Polish, za can be used before adjectives or adverbs to mean too in the sense of excessively:

• za duży = too big
• za szybko = too fast
• za mało = too little
• za dużo = too much

So:

• Mam za mało czasu = I have too little time / not enough time

This is a very common pattern.

Because after za mało Polish uses the genitive case.

The base form is:

• czas = time

But after expressions of quantity like mało (little / not much), the noun usually goes into the genitive:

• mało czasu = little time
• dużo czasu = a lot of time
• za mało czasu = too little time

So czasu is the genitive singular form of czas.

They are very close in meaning, but za mało czasu is much more natural and common in everyday speech.

• za mało czasu = too little time / not enough time
• niewystarczająco dużo czasu = insufficiently much time / not enough time

The second version is more formal, heavier, and less conversational. In normal speech, Polish speakers would strongly prefer za mało czasu.

Here na means something like for in for a walk.

• na spacer = for a walk

This is a common Polish pattern:

• czas na kawę = time for coffee
• pora na obiad = time for lunch
• mieć czas na coś = to have time for something

So:

• Mam czas na spacer. = I have time for a walk.
• Mam za mało czasu na spacer. = I have too little time for a walk.

Because after the preposition na in this meaning, Polish uses the accusative case.

The dictionary form is:

• spacer = walk

For masculine inanimate nouns like spacer, the accusative singular is the same as the nominative singular, so it stays:

• na spacer

That is why you see:

• Mam czas na spacer.
• Idę na spacer. = I’m going for a walk.

Yes, in English it may be translated differently depending on the verb.

For example:

• Idę na spacer. = I’m going for a walk.
• Mam czas na spacer. = I have time for a walk.

So the Polish phrase na spacer stays the same, but the best English translation changes with the sentence.

The word order is flexible.

The neutral sentence is:

• Mam dziś za mało czasu na spacer.

But you can also say:

• Dziś mam za mało czasu na spacer.
• Mam za mało czasu na spacer dziś. — possible, but less natural in many contexts
• Za mało czasu mam dziś na spacer. — marked, used for emphasis

The most natural everyday versions are usually:

• Mam dziś za mało czasu na spacer.
• Dziś mam za mało czasu na spacer.

Putting dziś first can emphasize today.

Yes.

• Mam za mało czasu na spacer. = I have too little time for a walk.

Adding dziś simply narrows it to today.

So:

• without dziś: a general statement or something understood from context
• with dziś: specifically about today

Yes, and it is a very natural alternative.

• Mam dziś za mało czasu na spacer.
  = I have too little time for a walk.

• Mam dziś za mało czasu, żeby pójść na spacer.
  = I have too little time to go for a walk.

The second version is a bit more explicit because it states the action to go for a walk. The original sentence is shorter and very natural.

They express the idea in different ways.

• spacer = a walk (noun)
• spacerować = to walk / to go for walks (verb)

Your sentence uses the noun:

• Mam dziś za mało czasu na spacer.

A verbal version could be:

• Mam dziś za mało czasu, żeby spacerować.

But that can sound slightly different:

• na spacer often suggests for a walk / for one walk
• spacerować can sound more like to walk as an activity in general

So in this sentence, na spacer is the most natural choice.

Yes, very easily. This is a useful pattern:

Mam dziś za mało czasu na + accusative noun

Examples:

• Mam dziś za mało czasu na obiad. = I have too little time for lunch.
• Mam dziś za mało czasu na kawę. = I have too little time for coffee.
• Mam dziś za mało czasu na zakupy. = I have too little time for shopping.
• Mam dziś za mało czasu na odpoczynek. = I have too little time for rest.

This makes the sentence a great model to reuse.

It is neutral and natural in both speech and writing.

• not especially formal
• not slangy
• perfectly normal in everyday conversation

You could say it to a friend, a coworker, or in a simple written message.

Polish often uses word order and intonation for emphasis.

For example:

• Dziś mam za mało czasu na spacer.
  Emphasis on today.

• Mam dziś za mało czasu na spacer.
  Fairly neutral.

• Mam dziś za mało czasu na spacer, ale jutro pójdę.
  The contrast helps emphasize today versus tomorrow.

• Mam dziś za mało czasu na spacer, nie na kawę.
  Emphasis on for a walk as the thing there is no time for.

So the sentence is flexible, but the original version is a very natural neutral choice.