It is really a pleasant time to have a picnic on a warm sunny day.

在温暖晴朗的日子里野餐真是一段愉快的时光。

youdao

The day dawned bright and clear, with the promise of warm, sunny weather.

拂晓时晴空万里，预示着温暖晴朗的天气。

《牛津词典》

On a warm, sunny afternoon in April, Mr.Yang burst from his home in this rural village near the Vietnamese border, carrying a kitchen cleaver.

那是四月温暖而阳光明媚的一个下午，在邻近越南边境的这个小村庄，杨手持厨房里的一把菜刀冲出了自己的家门。

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Many people love Los Angeles for its warm sunny weather, beautiful mountains and beaches, and movie stars.

VOA: special.2010.01.03

July is actually like California. It's really warm, sunny.

七月跟加州差不多。很温暖，很晴朗。

我来自阿拉斯加 - SpeakingMax英语口语达人

Los Angeles often has warm, sunny weather.

VOA: special.2010.01.03

On the first warm sunny day of April, every road popular with cyclists was mobbed.

FORBES: Where in the USA Do Men Live the Longest?

On the other hand, people who grow up in warm, sunny climates, have warm, sunny personalities: They're friendly, lighthearted, attractive, physically fit, vapid ignoramuses who drive with the top down and create marshmallow art for beach parties.

NPR: A Paean to the Music of Summer

With solar energy harnessed on rooftops, showers are warm on sunny days and lukewarm when it rains.

BBC: Turkey��s lotus eaters