Lake Ontario Water Temperature

(Today) Jun 2024

16.8°C / 62.3°F

The water will feel medium. The water will feel a bit chilly in just bathers / swimming costume. If you plan on wearing a wetsuit 4/3mm should be thick enough.

Current weather

23°C / 73°F
(broken clouds)
Partly cloudy
Wind
12 mph
Humidity
92%

Water temps is based on average surface temperatures measured throughout Lake Ontario.

Map showing Lake Ontario locations. Click on pins to view water temperature.

16 locations listed in Lake Ontario.