Bring an extra layer
While Norway isn't particularly chilly throughout the year, you should still be prepared. Even in the summer, the weather in Norway is famously unpredictable, so bring an extra jacket and raincoat. This is especially important if you plan to go hiking or spend a lot of time outside.
As previously said, the weather in Norway varies greatly between seasons, so carry plenty of clothing. Most essential, you should carry an extra layer of clothing if you plan to go hiking during your visit. Even in the summer, it's a good idea to include a rain jacket and a fleece in your backpack in case the weather changes or the temperatures drop as you ascend. Remember that things can change quickly, so bringing an additional layer with you is a must.