Meaning and Usage
快晴 (かいせい) specifically refers to a clear, sunny, and bright weather condition without clouds. It is often used in weather forecasts and daily conversation to describe ideal weather.
Common Contexts
You will hear 快晴 used when talking about good weather for outdoor activities like picnics, sports, or travel. It implies a cheerful and pleasant atmosphere.
Collocations and Patterns
- 快晴の空 (clear sky): emphasizes the cloudless, bright sky.
- 快晴の予報 (clear weather forecast): used in weather reports.
- 快晴の日 (a clear day): common phrase to describe a day with no clouds.
Register and Nuance
快晴 is a neutral and polite term suitable for both casual and formal contexts. It is more specific than just "いい天気" (good weather), focusing on the clarity and brightness of the sky.
Common Mistakes
Learners sometimes confuse 快晴 with 晴れ (はれ), which means "sunny" but can include some clouds. 快晴 always means completely clear skies, so use it when you want to emphasize perfect weather conditions.