Lake Ontario vs Seneca Lake
Seneca Lake is the warmer swim right now at about 19°C. They are roughly 139 km apart in United States.
Lake Ontario
Great Lakes
17.0°C
mild · modelled estimate
- October average
- 17.0°C
- Warmest month
- August · 22.0°C
- Coldest month
- 2.0°C
- Swim season
- July–September
Great Lake bordering New York and Ontario with popular summer swim beaches.
Seneca Lake
New York
19.0°C
mild · modelled estimate
- October average
- 19.0°C
- Warmest month
- August · 24.0°C
- Coldest month
- 4.0°C
- Swim season
- June–October
Seneca Lake in New York, United States reaches comfortable swimming temperatures in July and August, and drops close to single digits in winter.
Month by month
| Lake | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Ontario | 3.3°C | 2.0°C | 3.3°C | 7.0°C | 12.0°C | 17.0°C | 20.7°C | 22.0°C | 20.7°C | 17.0°C | 12.0°C | 7.0°C |
| Seneca Lake | 5.3°C | 4.0°C | 5.3°C | 9.0°C | 14.0°C | 19.0°C | 22.7°C | 24.0°C | 22.7°C | 19.0°C | 14.0°C | 9.0°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.
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