The organisers of Douglas Carnival are hoping it will stop raining in time for the parade along the promenades.
The carnival is being revived tomorrow (Saturday) about 20 years after the annual event ended.
However, the forecast tomorrow is for heavy rain.
A spokesman from Douglas Development Partnership and Douglas Council said: ‘We have received several inquiries whether Douglas Carnival is going to proceed tomorrow in view of the forecast for heavy rain.
‘We have been liaising with the Met Office and the good news is that although the rain is likely to be heavy during the middle of the day, we expect it to have passed in time for the carnival parade to proceed at 6.30pm as planned, followed by the After Party.
‘ All parts of the event, including the Fun Day during the afternoon, will therefore proceed as planned.’