From the start of June until the second week of July, it’s possible to see the midnight sun across large parts of northern Sweden. The golden rule is that if you want a clear view of the sun as the clock strikes midnight, you need to be near (or ideally north of) the Arctic Circle.
The further towards the North Pole you go, the greater the number of days when the midnight sun is visible. So in
Jokkmokk, which is just north of the Arctic Circle, the sun can be seen at midnight for 32 days in a row. Way up high in
Abisko, you can expect a whopping 56 days without a single hint of darkness.