Phuket's most important occasion, the Vegetarian Festival, dates back to 1825 and usually takes place during late September or October. There's a host of events and heaps of great food. Don't forget your earplugs - the fireworks are loud. Prepare to get wet from 13-15 April each year as Phuket celebrates Songkran, the water festival. This celebration - on Thai New Year - is characterised by splashing water on anyone in range. It's all good-natured, and can actually be a welcome relief from the heat.