Lake Femunden vs Lake Siljan
Lake Siljan is the warmer swim right now at about 17.8°C. They are roughly 216 km apart in Norway and Sweden.
Lake Femunden
Innlandet
cool · modelled estimate
- September average
- 14.1°C
- Warmest month
- August · 15.0°C
- Coldest month
- 1.0°C
- Swim season
- no month averages above 18°C — a wetsuit lake year-round
Lake Femunden in Innlandet, Norway stays cold all year; expect a wetsuit or a very quick dip, and freezes or near-freezes in winter.
Lake Siljan
Dalarna
mild · modelled estimate
- September average
- 17.8°C
- Warmest month
- August · 19.0°C
- Coldest month
- 1.0°C
- Swim season
- August–August
Lake Siljan in Dalarna, Sweden is swimmable in high summer, brisk either side of it, and freezes or near-freezes in winter.
Month by month
| Lake | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Femunden | 1.9°C | 1.0°C | 1.9°C | 4.5°C | 8.0°C | 11.5°C | 14.1°C | 15.0°C | 14.1°C | 11.5°C | 8.0°C | 4.5°C |
| Lake Siljan | 2.2°C | 1.0°C | 2.2°C | 5.5°C | 10.0°C | 14.5°C | 17.8°C | 19.0°C | 17.8°C | 14.5°C | 10.0°C | 5.5°C |
Monthly values are modelled from each lake's long-term winter and summer envelope, then refined with today's forecast air temperature for the headline reading.
Related lake comparisons
Want a different mix? Compare up to four lakes side by side or browse all lake water temperatures.
Explore every sea temperature page
Jump straight to a country, coastal region, city, seasonal ranking or comparison.