The first lighthouse in the modern sense was lit in 1651 and, until the current tower was raised, a couple of different buildings were used to support the light.

There is a very low diurnal temperature variation, which often results in very mild nights year-round compared with nearby cities and towns.

[5] In spite of it being an extreme maritime climate by Swedish standards, it still is quite continental compared to similar latitudes in Scotland.

In spite of the cool summer days, Landsort has never reported September frost, a very unusual occurrence for Swedish weather stations.

[7] On the other extreme, during a 2006 heat wave affecting the entire southern mainland, Landsort never rose above 24.3 °C (75.7 °F) in spite of frequent hot days in its vicinity.