FishCondishLake Simcoe, ON Fishing Report & Live Conditions
Lake Simcoe, ON fishing report
Lake Simcoe holds a strong mix of lake trout, whitefish, and yellow perch, and each species follows its own seasonal rhythm. Lake trout are most active when water temps drop into the low single digits, making late fall and winter ice fishing the prime window — the deep basins off Kempenfelt Bay and the main lake are reliable haunts. Whitefish run shallow to spawn in early winter, then pull back to deeper, cooler water. Yellow perch school along weed edges and hard-bottom flats through open water season and remain catchable through the ice all winter.
For lake trout, work deep structure with tube jigs, spoons, or live smelt suspended near bottom in 60 to 100 feet of water. Whitefish respond well to small jigging spoons tipped with maggots or a piece of worm fished just off bottom — they often hold in suspended schools, so pay attention to your sonar. Perch stack on gravel and sand transitions adjacent to weed cover; small tungsten jigs tipped with wax worms or live minnows get bit consistently. Watch water temperature carefully — as surface temps push past 20°C in summer, lake trout retreat deep and activity slows until fall cooling triggers aggressive feeding again.
Lake Simcoe, ON river flow
The closest active USGS gauge to Lake Simcoe, ON is EIGHTEENMILE CREEK AT BURT NY (site 04219768), about 82.5 miles away. It drains roughly 84.8 square miles. Flow is the single best predictor of where fish sit in moving water, so it is worth knowing what normal looks like before you read today's number.
In July, this gauge typically runs about 87 cfs.
| Month | Median flow |
|---|---|
| Jan | 130 cfs |
| Feb | 123 cfs |
| Mar | 175 cfs |
| Apr | 141 cfs |
| May | 119 cfs |
| Jun | 99 cfs |
| Jul | 87 cfs |
| Aug | 84 cfs |
| Sep | 88 cfs |
| Oct | 102 cfs |
| Nov | 114 cfs |
| Dec | 127 cfs |
Median flow from the USGS daily-statistics record. For the live flow, gage height, water temperature, and today's fishing score, open the Lake Simcoe, ON dashboard.
What's biting near Lake Simcoe, ON
The species most likely to be feeding Lake Simcoe: lake trout, whitefish, and yellow perch. FishCondish grades every hour of the day for Lake Simcoe, ON and gives each species its own bite forecast, so you can see which window is worth fishing before you load the truck.
Lake Simcoe, ON fishing FAQ
What fish can you catch at Lake Simcoe, ON?
The species bite forecast for Lake Simcoe, ON covers what's likely feeding there, including lake trout, whitefish, and yellow perch — and updates with the live conditions.
What's the best time of day to fish Lake Simcoe, ON?
Dawn and dusk are usually the most productive windows on Lake Simcoe, particularly when the barometric pressure is steady or falling. FishCondish grades every hour of the day so you can pick the best one.
When is the best season to fish Lake Simcoe, ON?
Spring and fall are typically strongest on Lake Simcoe as water temperatures sit in the productive range, with summer fishing best early and late in the day. It varies year to year, so check the live conditions before you head out.
How do I know if it's a good day to fish Lake Simcoe, ON?
FishCondish combines wind, water level, water temperature, pressure trend, and moon phase into a single 1–10 fishing score for Lake Simcoe, ON, updated in real time — a quick go/no-go read before you make the trip.
Fishing tips for Lake Simcoe, ON
New to these waters? Start with these beginner-friendly guides: