See the press release from the organisers below:
"It is with regret that we have to announce the postponement of the Rhythmtree Festival.
With this years unprecedented weather bringing unrelenting rainfall to the festival site we have been spending weeks putting into place contingency plans to allow the festival to go ahead.
However in the last week it has become obvious we cannot now commence the site build planned to start today Thursday 12 July.
With the ground in its present waterlogged condition the site build itself would destroy what is a beautiful setting for this years festival.
The Rhythmtree is very much an all age festival and this has also influenced our decision.
The last thing we would want is that our existing and potential ticket buyers attend a festival on a site already damaged and churned up by the necessary vehicles involved in the delivery of everything from the main-stage to the portaloos.
We have been using the best weather forecasting websites we can find and of course, like all those with planned events in the next few weeks, had hoped for a dramatic change in the present weather pattern.
There is no evidence that the current high rainfall levels will relent in the next few days and there is very little probability that there will be even a brief period of dry weather to allow the site to recover from its present condition.
We have therefore taken the decision to postpone and set a new date for the festival on the 24/25/26 August.
All tickets already purchased will be valid for the new dates.
All ticket buyers who have purchased on-line from Red Funnel or WeGotTickets will be notified by email of this postponement and be offered refunds if it is not possible to attend on the new dates.
If you have bought a ticket from one of our island outlets we need a few days to organise a refund procedure.
We have an agreement with our outlets that they will not be responsible for ticket refunds and the refund process will be by postal application to Rhythmtree Promotions Ltd.
An application for refund of tickets will be available on this website within a few hours and we will also place application forms in all the outlets by this week-end.
All ticket money is secure and available for refund on request.
The Rhythmtree has built up an exceptional reputation for fair dealing and good organisation in the last three years and we are not about to destroy that by delaying or prevaricating about refunds for those of you who cannot attend the festival in August.
The Rhythmtree has not and will not be cancelled or abandoned.
We hope to see as many of you as possible in August"