Europe is always a top choice during the summer holidays, but if you are thinking of a climbing, hiking, biking sort of a holiday, it can be too hot in many places to really make the most of it. Although if you head to the mountainous areas, such as the Picos de Europa in Spain, the temperatures are much cooler, and hills are much quieter. Other adventurous and cooler places to consider during the long break include Finland, with long days to really squeeze every moment of fun out of the holiday. Kayaking on inland lakes or white water rafting in Croatia or Montenegro are good options, far from the madding crowds of the coast, and some at an elevation, and so not as relentlessly hot. And if you head to Canada, Colorado or some of the northern national parks of the USA, you can still find snow in July sometimes, but glistening lakes and rivers to kayak down too. It is also still warm and lovely in Vietnam at this time of year, albeit with a few monsoon showers to cool you down, but on an adventure holiday kayaking along Halong Bay or swimming in Hoi An, you won’t worry too much about the odd splash. Unlike the rest of the country, the northeast of Sri Lanka has a monsoon Oct-Jan, so perfect during European summer. It has also just opened up to tourism again, after being closed due to conflict for many years.