The walking season usually lasts from May until October, but this varies depending on the location, altitude etc. The season also varies from year to year, so ask at the reception desk or at a tourist information office if you are unsure about where you can go walking. Remember to also check when it gets dark (depends on time of year).
If you are going hiking, following these rules and tips will keep you safe:
Equipment
Hikers must be prepared for all types of weather in the mountains, even in summer. You must bring along clothes and equipment that are suitable for use in good weather, but also for snow, rain and wind. The weather can change very quickly in the Norwegian mountains, and it can snow at high altitudes even in summer. Read more about the gear you need for mountain hikes in Norway here.