Se il tempo migliora, tolgo gli stivali e mi metto i sandali sulla terrazza.

In Italian, tempo can mean both time and weather. Context tells you which one is meant.

In everyday Italian, il tempo very often means the weather, especially in expressions like:

• Che tempo fa?
• Il tempo è brutto
• Se il tempo migliora...

So here il tempo migliora means the weather gets better / improves.

Italian commonly uses the present indicative after se for a real, possible condition in the future.

So:

• Se il tempo migliora, ... = If the weather improves, ...

This is the most normal and neutral choice.

You may also hear future forms after se in some contexts, but for learners, the safest and most standard pattern is:

• se + present indicative
• main clause in present, future, or sometimes imperative

For example:

• Se piove, resto a casa
• Se arriva presto, usciamo
• Se hai tempo, chiamami

Because Italian often uses the present tense to talk about a future action that is seen as likely, planned, or closely connected to the condition.

So:

• Se il tempo migliora, tolgo gli stivali e mi metto i sandali

can naturally mean:

• If the weather improves, I’ll take off my boots and put on sandals

This is very common in spoken Italian.

You could also say:

• Se il tempo migliora, toglierò gli stivali e mi metterò i sandali

That version is also correct, but the present tense often sounds more immediate and conversational.

Mettersi is the reflexive form of mettere, and it is very commonly used to mean to put on clothes.

So:

• mettere = to put
• mettersi = to put on oneself

Therefore:

• mi metto i sandali literally means I put the sandals on myself

The reflexive pronoun changes with the subject:

• mi metto
• ti metti
• si mette
• ci mettiamo
• vi mettete
• si mettono

This is one of the most common ways to talk about getting dressed in Italian.

Yes, absolutely.

In fact, mi tolgo gli stivali is often the more explicit and natural way to say I take off my boots, because it clearly shows you are removing them from yourself.

So you have:

• tolgo gli stivali = I remove the boots / I take off the boots
• mi tolgo gli stivali = I take off my boots / I remove the boots from myself

The sentence you were given is understandable and grammatical, but many speakers would very naturally say:

• Se il tempo migliora, mi tolgo gli stivali e mi metto i sandali sulla terrazza

Italian often uses the definite article with clothing, especially when it is clear whose clothing is being talked about.

So Italian prefers:

• mi metto i sandali
• mi tolgo la giacca
• si è messo il cappello

where English often uses no article or uses a possessive such as my.

You only add a possessive like i miei sandali if you want to emphasize ownership or make a contrast.

Because Italian definite articles change depending on the sound that follows.

Stivali begins with st- followed by a consonant, and masculine plural nouns with that kind of beginning take gli:

• singular: lo stivale
• plural: gli stivali

But sandali begins with a normal consonant sound, so it takes i:

• singular: il sandalo
• plural: i sandali

So the contrast is:

• gli stivali
• i sandali

Because Italian usually drops subject pronouns when the verb ending already shows who the subject is.

Here:

• tolgo
• mi metto

both clearly indicate I.

So io is unnecessary unless you want emphasis or contrast, for example:

• Io tolgo gli stivali, tu no
• Io mi metto i sandali, lui resta con le scarpe

This is very normal in Italian and is one of the first big differences English speakers notice.

Yes, in terrazza is also possible.

The phrase sulla terrazza literally means on the terrace, and it presents the terrace as a physical place/surface.

In terrazza often means something like out on the terrace and can sound a little more idiomatic in some everyday contexts.

So both can work, but there may be a slight nuance:

• sulla terrazza = on the terrace
• in terrazza = on/out on the terrace area

In this sentence, sulla terrazza is perfectly fine and simply tells you where the action happens.

Most naturally, it gives the setting for the action as a whole, or at least for the second part of it.

So the listener will usually understand something like:

• If the weather gets better, I take off my boots and put on sandals on the terrace

Because it comes at the end, it most directly feels connected to mi metto i sandali, but in real language it can easily color the whole scene.

If you wanted to make the location apply very clearly to everything, you could move it earlier:

• Se il tempo migliora, sulla terrazza tolgo gli stivali e mi metto i sandali

It is very normal and usually recommended when the se clause comes first.

So this punctuation is standard:

• Se il tempo migliora, tolgo gli stivali e mi metto i sandali sulla terrazza.

The comma helps separate the condition from the main action.

If the order is reversed, the comma is often omitted:

• Tolgo gli stivali e mi metto i sandali sulla terrazza se il tempo migliora.

Both are possible, but the original version is clearer and more natural for teaching and for everyday use.