Winter is the coldest season, and winter vacation is shorter than summer vacation.

冬天是最冷的季节，而且寒假比暑假短。

youdao

Although the solstices represent the pinnacles of summer and winter with respect to the intensity of the sun's rays, they do not represent the warmest or coldest days.

虽然夏至和冬至分别代表了太阳光线强度在夏季和冬季的顶峰，他们却并不代表最热的或最冷的日子。

youdao

So for the year or so we lived out there, on the hottest summer days and the coldest winter nights, we had to go outside to the wooden outhouse to relieve ourselves.

我们住在那儿的一年多里，无论是炎炎夏日，还是凛凛冬夜，都不得不跑到木头搭建的户外厕所去方便。

youdao

This observation was used to infer that this was the coldest summer in at least the past 400 years.

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Average winter temperatures in Novosibirsk are around -13 to -21c in the coldest month (January), and up to 25c in summer.

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