September on Rice Lake: Warm Water, Quiet Lake, Open Dates

September is the best-kept secret on Rice Lake. The water holds its summer warmth into early fall, the boat traffic thins to almost nothing, the fishing turns aggressive, and the cottage calendar finally opens up. If July taught you that Rice Lake is worth the trip, September is when the regulars actually book—same lake, warmer water than June, none of the competition for dates.

The Water Is Still Warm (Warmer Than June, Actually)

This surprises people every year: because Rice Lake is shallow—averaging about three metres deep—it banks heat all summer and releases it slowly. Early September swimming is typically more comfortable than mid-June swimming. The lake’s full warm-water story is in our guide to swimming in Rice Lake, but the September version is simple: the beach and the dock stay completely usable into the third week of the month most years, and the heated saltwater pool covers the cool mornings.

The Lake Goes Quiet

Labour Day flips a switch on Rice Lake. The weekly renters go home, the school-year routines start, and the lake returns to the people who know better. The morning water turns to glass and stays that way past breakfast. Paddling the shoreline—with the kayaks, canoes, and paddleboards included at Mildred’s—stops being a dodge-the-wake exercise and becomes the thing you drove up for. Sunsets come earlier, which means you actually stay up for them.

September Fishing Is the Year’s Best Window

Ask serious Rice Lake anglers when they plan their trips and the answer is September–October: bass and walleye feed hard before winter, the weed edges concentrate fish, and the boat pressure is a fraction of July’s. Our fishing and boating guide calls it the best-kept secret window of the season, and the guides who work the lake agree. If the summer trip was for the family, the September trip is for the tackle box.

Golf, Trails, and the Fall Colour Head Start

The 18-hole course at Bellmere Winds stays open and gets quieter—tee times that were fought over in July are walk-ups in September. By the back half of the month, the Northumberland hills around the lake start turning, and the Kawarthas in early colour—without Thanksgiving-weekend crowds—is one of Ontario’s most underrated drives. Peterborough’s 25 minutes away when you want a town day; the 3-day itinerary maps it.

The Season Runs Through Thanksgiving

Mildred’s operates from Victoria Day through Thanksgiving, so September isn’t the last call—October’s colour weekends and Thanksgiving itself (October 12, 2026) close the year. But September is the sweet spot: summer amenities, fall calm, and—unlike July—actual availability. The three-bedroom cottage sleeps six, has its own porch and direct waterfront access, and the pool, beach, and splash pad are steps away.

Check September and fall dates through Great Blue Resorts: search availability here, or see the booking page for details.

FAQ — September at a Rice Lake Cottage

Is the water still warm enough to swim in September?

Usually, yes—early September especially. Rice Lake’s shallow profile means it holds summer heat well past Labour Day, and early-September water is typically warmer than mid-June’s. By late month it’s brisk but swimmable on warm days, and the heated saltwater pool at the resort covers the rest.

Is the resort still open in September?

Fully. The season at Bellmere Winds runs from Victoria Day through Thanksgiving (October 12, 2026)—pool, golf course, restaurant, and grounds all operating. September just trades the crowds for quiet.

Is September cheaper than summer at Rice Lake?

Availability is certainly better—peak-summer weekends book out months ahead, while September dates stay open much later. Check current rates on the booking page; shoulder-season value on Ontario waterfront is consistently at its best after Labour Day.

What’s the fishing like in September?

The year’s best. Bass and walleye feed aggressively ahead of winter, the lake is quiet, and experienced anglers deliberately plan their Rice Lake trips for September and October. The full seasonal breakdown is in our fishing guide.

---

Summer gets the headlines. September gets the lake. Warm water, glass mornings, hungry fish, open tee sheets, and a booking calendar that finally says yes—90 minutes from Toronto.

Planning the long weekend first? Labour Day falls September 5–7 this year—the long-weekend playbook applies, and our Labour Day guide is coming next week.

---