Nosaltres també volem anar al museu dissabte.

You can usually leave it out.

Catalan often drops subject pronouns because the verb ending already tells you who the subject is. Here, volem already means we want.

So both of these work:

• Nosaltres també volem anar al museu dissabte.
• També volem anar al museu dissabte.

Including Nosaltres adds emphasis or contrast, like we also or as for us, we also.

Volem is the 1st person plural present indicative form of voler, which means to want.

It matches nosaltres = we.

A few present-tense forms of voler are:

• vull = I want
• vols = you want
• vol = he/she/it wants
• volem = we want
• voleu = you all want
• volen = they want

So nosaltres volem means we want.

Because after voler, the next verb normally stays in the infinitive.

So:

• volem anar = we want to go
• volen menjar = they want to eat
• vull estudiar = I want to study

This is very similar to English want + to + verb, except Catalan does not use a separate word like English to before the infinitive here.

In Catalan, the infinitive does not need a separate particle like English to.

English:

• we want to go

Catalan:

• volem anar

Here anar by itself already means to go as an infinitive form. So Catalan does not add another word between volem and anar.

Al is a contraction of a + el.

• a = to
• el = the
• al = to the

So:

• al museu = to the museum

This contraction is very common in Catalan.

For example:

• al parc = to the park
• al cinema = to the cinema

Because Catalan normally uses the definite article with a specific singular noun like museu here.

So anar al museu is the natural way to say go to the museum.

Using just anar a museu would not sound normal in standard Catalan in this sentence.

També means also or too.

In this sentence, putting it after the subject is a very natural position:

• Nosaltres també volem...

This gives the sense of we also want...

Catalan word order is somewhat flexible, but placement can change what feels emphasized. For example:

• També volem anar al museu dissabte.
  Still natural; the subject is simply omitted.

• Nosaltres volem també anar al museu dissabte.
  Possible, but less neutral and less natural for a beginner pattern.

So the sentence you have is a very good standard model.

Because Catalan usually does not need a preposition before days of the week in this kind of time expression.

So:

• dissabte = on Saturday
• demà = tomorrow
• avui = today

That means:

• anar al museu dissabte = to go to the museum on Saturday

This is normal Catalan usage.

Here dissabte normally means a specific Saturday, usually the coming or contextually relevant Saturday.

If you want to talk about Saturdays in general, Catalan usually uses:

• els dissabtes = on Saturdays

So:

• Volem anar al museu dissabte. = one specific Saturday
• Volem anar al museu els dissabtes. = Saturdays in general / every Saturday kind of idea, depending on context

It can change somewhat, but the given order is very natural.

Catalan allows more flexibility than English because verb endings carry more information. For example:

• Nosaltres també volem anar al museu dissabte.
• També volem anar al museu dissabte.

Both are good.

Still, not every rearrangement sounds equally natural. For learners, the safest pattern is:

subject + també + conjugated verb + infinitive + place + time

That is exactly what this sentence does.

The accent mark in també shows that the stress falls on the last syllable:

• tam-BÉ

In Catalan, written accents help show stress and sometimes vowel quality. So the accent here is not optional; it is part of the correct spelling.

A simple approximate pronunciation is:

no-ZAL-tres tam-BÉ buh-LEM ah-NAR al moo-ZEU dis-SAP-tuh

A few helpful notes:

• volem is stressed on the second syllable: vo-LEM
• també is stressed at the end: tam-BÉ
• museu is stressed on the last syllable: mu-SEU
• dissabte is stressed on sab

Exact pronunciation varies by dialect, but this will help you say it in a recognisable way.