tenkou ga waruku, kyanpuzyou no kukakusaito kara tessyuusita.

悪く is the -ku form of the i-adjective 悪い.

In this sentence, 天候が悪く、撤収した means something like:

• the weather was bad, so we packed up and left
• because the weather was bad, we withdrew from the campsite

The -く form is often used to connect an adjective to what follows. It can sound like:

• and
• because
• since

So 天候が悪く、撤収した is a natural way to say the weather was bad, and so we withdrew.

The comma helps separate the first part from the second:

• 天候が悪く、
• キャンプ場の区画サイトから撤収した。

It shows a pause and makes the relationship clearer. Here, it strongly suggests that the bad weather is the reason for the withdrawal.

Without the comma, the sentence could still be understandable, but the comma makes it easier to read.

Using が marks 天候 as the thing being described by 悪く:

• 天候が悪い = the weather is bad

This is the most straightforward way to state that condition.

If you used は, it would sound more like setting up the weather as a topic:

• 天候は悪く、…

That is also possible in some contexts, but が is very natural when simply identifying what is bad.

So here:

• 天候が悪く = because the weather was bad

Both relate to weather, but they are not exactly the same in nuance.

• 天気 is the common everyday word for weather
• 天候 sounds a bit more formal or objective, closer to weather conditions

So:

• 天気が悪い = very common, casual
• 天候が悪い = slightly more formal, like talking about conditions affecting plans

In a sentence about camping and having to leave, 天候 fits well because it sounds like the weather conditions caused a practical decision.

Let’s break it down:

• キャンプ場 = campsite / campground
• の = linking particle, often like of or showing belonging
• 区画サイト = a partitioned or designated camping plot

So キャンプ場の区画サイト means:

• the designated camping area at the campground
• a numbered/divided campsite plot in the campground

In Japanese camping vocabulary, 区画サイト usually refers to an individual camping space assigned within a campground, as opposed to something like a free-use open area.

The particle の links nouns together.

Here it connects:

• キャンプ場
  • 区画サイト

So it means something like:

• the campground’s designated site
• a designated site at the campground

In English, we often translate の in different ways depending on context:

• of
• at
• possession
• classification

Here, at or in sounds most natural in English, even though Japanese uses の.

から means from.

So:

• 区画サイトから撤収した = withdrew from the campsite plot = packed up and left the campsite plot

It marks the place from which the action starts or the place one leaves.

This is very natural with verbs involving departure, movement away, or removal.

撤収する means to withdraw, to pull out, or to pack up and leave.

In camping, it often means:

• taking down your tent
• packing your gear
• leaving the site

So it is stronger and more specific than just 出た (left) because it suggests an organized pullout or removal of equipment.

In this sentence, 撤収した probably means:

• we packed up camp and left
• we withdrew from the campsite

It is a very suitable verb for camping, military, event setup, and similar situations.

Japanese often puts the tense marking at the end of the sentence, while earlier connected parts stay in a connecting form.

So:

• 天候が悪く、撤収した

naturally means:

• the weather was bad, and we withdrew
• not the weather is bad, and we withdrew

Even though 悪く itself does not show past tense directly, the whole sentence is understood in the past because the final verb is 撤収した.

If you wanted to state the first part independently in the past, you would say:

• 天候が悪かった

But in a connected sentence, 悪く is normal.

The subject is omitted, which is very common in Japanese.

From context, it is probably something like:

• we
• our group
• the campers

So the sentence naturally means:

• We withdrew from the campsite because the weather was bad.

Japanese often leaves out subjects when they are obvious from context. This is one of the most common things English speakers have to get used to.

Yes, but the nuance would change.

If you used 天気

• 天気が悪く、キャンプ場の区画サイトから撤収した。

This would sound more casual and everyday. Very natural.

If you used 帰った

• 天候が悪く、帰った。

This means simply went home or left, but it loses the camping-specific idea of packing everything up.

Why 撤収した is better here

Because it suggests:

• breaking camp
• removing equipment
• ending the stay due to conditions

So 撤収した is more precise than just left or went home.

Yes, it is a camping-related term commonly used in Japan, and it includes the borrowed word サイト from English site.

In Japanese camping language:

• サイト often means camping spot / campsite space
• 区画サイト = a separated, assigned camping plot
• フリーサイト = a free-area campsite where you choose your own spot

So even though サイト comes from English, in Japanese it has a specific camping meaning that learners should get used to.

It can suggest that idea in context, but grammatically it most directly means:

• the weather was bad

If you specifically wanted to say the weather became bad, Japanese would more explicitly say something like:

• 天候が悪くなって、撤収した。

That means:

• the weather turned bad, so we withdrew

So the original sentence does not explicitly say the weather changed; it simply states that the weather condition was bad, leading to the withdrawal.