TV3 weatherman and documentary maker Deric Ó hArtagáin wants people to get their wellies on and have some fun.
Deric has teamed up with Cadbury's to celebrate the launch of their new chocolate bar - Puddles.
The confectionery brand are hoping to make history by organising the world's first ever online rain dance, with the help of chocolate fans from across the country.
Put on your wellies and join in the fun - and you can even win some treats for your efforts.
Whether you splish in stilettos or splash in your boots - simply log on to Facebook, upload a picture of yourself in one of our Rain Dance poses.
As a reward, Cadburys will send you some of their new chocolate.
Log on to Facebook for more information.