Hello! I'm travelling in Thailand throughout the month of September, including Bangkok, Chiang Mai and Koh Phangan. I'm wondering whether to pack my proper waterproof Berghaus jacket, which is easy to bunch up into my backpack, but sill a little bulky, or buy a cheap, thin, plastic kagool/mac (the sort you wear at festivals).
Will I need a more durable waterproof for the rains, or can I get away with the lesser, cheaper mac? I want to keep my backpack fairly light but want to stay dry when it down pours!