Planning for the weather is a good way to make your trip to Ban Pak Som relaxing and enjoyable, especially when you're splurging. The hottest months are usually April and March, with an average temperature of 29°C, while the coldest months are January and December, with an average of 24°C. The rainiest months in Ban Pak Som are August, July, September and June, with each month seeing an average of 405 mm of rainfall.