"晴れ" means "sunny" in Japanese.

"Sunny or clear" is the meaning. Probably sunny is the better way to think of it. So you could say: 今日は晴れですね。 （きょうははれですね。） Today is sunny, (isn't it?) Or you could say: 今日は晴れではない。雨が最悪! （きょうははれではない。あめがさいあく！） The weather is not nice today. The rain (really) sucks!

We pronounce it "Hare". It's little but complicated for studying Japanese because we pronounce "ha" and "wa" for "は" (^^;)