postponed because of rain
Used as a set phrase for events, games, or ceremonies that are delayed or rescheduled due to rain.
Tomorrow's game has been postponed due to rain.
In the event of a rain postponement, the ticket remains valid.
順延 means 'postponement' in general, often to the next available day, while 雨天延期 specifically indicates postponement due to rain.
中止 means 'cancellation', whereas 雨天延期 implies the event will be rescheduled, not canceled.
Compound of 雨天 (rainy weather) and 延期 (postponement).