YOU SAID:

in the night it is cold outside, more so when it's dark.

INTO JAPANESE

夜は外は寒く、暗いときはさらに寒くなります。

BACK INTO ENGLISH

It's cold outside at night, and even colder when it's dark.

INTO JAPANESE

夜は外は寒く、暗くなるとさらに寒くなります。

BACK INTO ENGLISH

It's cold outside at night and gets even colder as it gets dark.

INTO JAPANESE

夜は外は寒く、暗くなるにつれてさらに寒くなります。

BACK INTO ENGLISH

It's cold outside at night and gets even colder as it gets darker.

INTO JAPANESE

夜は外は寒く、暗くなるにつれてさらに寒くなります。

BACK INTO ENGLISH

It's cold outside at night and gets even colder as it gets darker.