What should I pack for a summer visit?

The answer

Pack light layers, a waterproof jacket, a warm sweater, comfortable shoes and insect repellent. Summer weather is changeable, with warm spells but also cool, rainy days, and mosquitoes can be a nuisance in forests and near water, especially in the north. Add swimwear if you plan to use lakes or a sauna, sun protection for long bright days and a sleep mask for the white nights or midnight sun.