‘April Showers Bring May Flowers’
There are some periods of the year when it rains more than other times. In some parts of the world, for example, the month of April can be especially rainy. That brings us to our expression for today: April showers bring May flowers.
Source : https://learningenglish.voanews.com/a/april-showers-bring-may-flowers-/6519628.html