Planning for the weather is an important factor for making your trip to Gapyeong a success, especially when you’re splurging. The hottest months are usually August and July, with an average temperature of 22°C, while the coldest months are January and December, with an average of -1°C. The rainiest months in Gapyeong are July, August, June and September, with each month seeing an average of 253 mm of rainfall.