Fontana Lake vs Watts Bar Lake

Watts Bar Lake is the warmer swim right now at about 24°C. They are roughly 86 km apart in United States.

Fontana Lake

North Carolina

21.5°C

warm · modelled estimate

October average
21.5°C
Warmest month
August · 26.0°C
Coldest month
8.0°C
Swim season
June–October

Fontana Lake in North Carolina, United States warms into the mid-20s °C for reliable summer swimming, and drops close to single digits in winter.

Watts Bar Lake

Tennessee

24.0°C

hot · modelled estimate

October average
24.0°C
Warmest month
August · 29.0°C
Coldest month
9.0°C
Swim season
May–November

Watts Bar Lake in Tennessee, United States stays bath-warm through the summer swim season, and stays mild even in winter.

Month by month

LakeJanFebMarAprMayJunJulAugSepOctNovDec
Fontana Lake9.2°C8.0°C9.2°C12.5°C17.0°C21.5°C24.8°C26.0°C24.8°C21.5°C17.0°C12.5°C
Watts Bar Lake10.3°C9.0°C10.3°C14.0°C19.0°C24.0°C27.7°C29.0°C27.7°C24.0°C19.0°C14.0°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.

Jump straight to a country, coastal region, city, seasonal ranking or comparison.