Unfortunate rebuttal: Not if you live in the UK :/
April showers occur all year round here, unless it’s cold enough to freeze the rain into snow. Or, if you’re extremely lucky, it forms some kind of crappy and wet snow/rain hybrid that takes its sweet time to fall and makes everything damp and soggy anyway.
The May flowers, or just about any kind of flower has given up on the weather because it’s so bloody cold. So no flowers until June.
Again with picnics - no-one’s crazy enough to sit around having a picnic when it’s minus bum-freezing degrees celsius outside. Unless, for example, it was someone from Scotland trying to show the residents of the Southeast they’ve got it easy weather-wise and how they’re doing it wrong.
On the plus side, there are no insects hovering about! Take that wasps.