The best time to go to Hartola is during the summer months, from June to August, for the warmest weather and most daylight, or in late autumn, around September and October, for the striking autumnal colours.For those looking to enjoy outdoor activities like hiking, fishing, or boating, the summer offers pleasant temperatures, typically ranging from 15°C to 25°C. The long daylight hours, with the sun setting very late, provide ample time for exploration and enjoying the natural surroundings of Päijänne Tavastia. This period is ideal for couples and families who want to experience the Finnish lake country at its most inviting.If you're interested in the dramatic change of seasons and photography, late autumn is a wonderful time to visit. The forests surrounding Hartola transform into a palette of reds, oranges, and yellows. While temperatures are cooler, usually between 5°C and 15°C, it's a peaceful time to appreciate the landscape.