The forecast is according to the Met Office and is correct at the time of writing, but it is subject to change. Boomtown 2025 (Image: Lynford James)WednesdayAs the festival begins on Wednesday, there will be not a cloud in the sky, with highs of 33C. There will be a gentle breeze throughout the day, with a 10 per cent chance of rain at 5pm. There is a 20 per cent chance of rain at 7pm, increasing to 30 per cent between 1am and 7am on Monday. There is a between 20 and 30 per cent chance of rain throughout the day, with less sun and mostly clouds.