Planning for the weather is a good way to make your trip to Ipiales relaxing and enjoyable, especially when you're splurging. The hottest months are usually October and September with an average temp of 53°F, while the coldest months are August and July with an average of 51°F. The rainiest months in Ipiales are November, December, March, and April, with each month seeing an average of 14 inches of rainfall.