Planning for the weather is a good way to make your trip to Bovec relaxing and enjoyable, especially when you're splurging. The hottest months are usually August and July, with an average temperature of 17°C, while the coldest months are January and February, with an average of 1°C. The rainiest months in Bovec are November, May, October and September, with each month seeing an average of 216 mm of rainfall.