Rjukan is a city of approximately 3,600 people in Telemark, Norway. Located in the Europe/Oslo time zone at 59.9°N latitude.
In 2025, Rjukan recorded an average annual temperature of 45°F. The hottest temperatures reached 81°F in July; the coolest were 0°F in January. Total precipitation for the year was 42 inches, with the wettest month being September. Snowfall for the year totaled approximately 38 inches.
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