Norway — Water Temperature in Seas, Lakes and Rivers
Check today’s water temperatures across Norway, including seas, lakes, and rivers. View real-time updates and seasonal ranges for both coastal and inland waters. We find every place where you can swim and show you the water temperature there today and throughout the year.
Sea Water Temperature Along the Coast
Chart of Average Temperature Changes Over the Last 60 Days
Places with the Warmest Sea Water Today
The Most Popular Seaside Places
Coastal Seas and Oceans
Water Temperature in Lakes and Rivers
Popular Lakes
Popular Rivers
Popular Places
Water Temperature and Swimming Overview
Regions and Map
Water Temperature Trends
Norway’s coastal waters and inland lakes show large temperature variation with the seasons and by latitude. On the southern coast and in sheltered fjords, sea temperatures in summer often reach roughly 15–20 °C (59–68 °F), and sheltered bays can warm a little more in heat waves. The western fjords are typically cooler, around 10–15 °C (50–59 °F) in summer, while the northern coast and Arctic regions generally remain chillier, commonly 6–12 °C (43–54 °F) at peak summer. Winter sea temperatures along the coast are moderated by the North Atlantic Current but still cold: southern coastal waters often sit around 3–8 °C (37–46 °F), western areas similar, and northern coastal waters can approach near-freezing conditions in sheltered places. Lakes and rivers inland warm more quickly in summer; lowland lakes in southern Norway commonly reach 15–22 °C (59–72 °F) in warm months, whereas mountain lakes and glacial-fed rivers remain much colder, often 5–15 °C (41–59 °F) or lower, and spring snowmelt can produce near-freezing flows.
Swimming Conditions
Swimming is widely practiced and generally allowed across Norway, reflecting a strong outdoor culture and the public right of access to nature. Many beaches and lake shores are used for bathing in summer, though there is limited lifeguard coverage outside major public beaches. Cold-water risks—cold shock and hypothermia—mean that wetsuits, gradual acclimatisation, and local knowledge are recommended, especially in northern areas and for river swimming where currents can be strong. Winter and ice swimming are popular in some communities but should be done with caution, proper equipment, and company or supervision.