Fishing Forecast · Michigan · Updated September 2026

Opal Lake

Opal Lake earns a null for water quality. This forecast reads its measured clarity, depth, and trophic state — with each species' biology, the sun and moon, and today's conditions — to call when the fish move on Opal Lake and how to catch them.

40 ft
max depth: 11
fish species: 15.5 ft
water clarity: Natural lake
water body

Today · Tue Sep 8

★★★★★

The bite on Opal Lake today. Sunrise 7:09 AM, sunset 8:03 PM.

Moon: Waning Crescent · 11%
Major windows: 10:04 PM–12:04 AM · 10:31 AM–12:31 PM

Best day · next 2 weeks

Fri Sep 11

★★★★★

New Moon moon (0%). Fish the major windows at 12:36 AM and 12:59 PM.

Fishing Forecast for Opal Lake

A multi-factor outlook built from Opal Lake's measured water quality — clarity, trophic state, depth, and water-body type — combined with each species' biology, seasonal patterns, and today's live weather. It flags spawn timing, where the fish hold, and the techniques that fit this lake's water, not just the moon.

Smallmouth Bass

Game FishFallFall feed-up

Prime

~65°F est.

Opal Lake runs 15.5 ft of clarity — so finesse presentations and natural colors on light line tend to out-fish reaction baits.

Because Opal Lake averages 15.5 ft of visibility (clear), so finesse presentations and natural colors on light line tend to out-fish reaction baits.
Its oligotrophic nutrient level puts the summer weedline near 15–20 ft — that edge is the high-percentage zone to hold smallmouth bass through the warm months.
With a max depth of 40 ft, Opal Lake is deep enough to stratify in summer, so coldwater fish hold near the thermocline while warmwater fish stay above it.

Techniques for clear water

drop-shot & ned rignatural crayfish/goby colorslong spinning leaders — clarity is their edge

Season-by-season on Opal Lake

Season	Where	Structure	How
Spring	shallow 4–12 ft	rocky flats, gravel points, boulder shoals	tubes, ned rigs, jerkbaits
Summer	mid 10–25 ft	main-lake rock, reefs, deep points	drop-shot, tubes, deep cranks
Fall	variable 8–30 ft	rock structure, baitfish schools	jerkbaits, blade baits, hair jigs
Winter / Ice	deep 20–40 ft	deep rock (open-water fishery where legal)	slow blade baits, hair jigs

Largemouth Bass

Game FishFallFall feed-up

Very Good

~65°F est.

Opal Lake runs 15.5 ft of clarity — so finesse presentations and natural colors on light line tend to out-fish reaction baits.

Because Opal Lake averages 15.5 ft of visibility (clear), so finesse presentations and natural colors on light line tend to out-fish reaction baits.
Its oligotrophic nutrient level puts the summer weedline near 15–20 ft — that edge is the high-percentage zone to hold largemouth bass through the warm months.
With a max depth of 40 ft, Opal Lake is deep enough to stratify in summer, so coldwater fish hold near the thermocline while warmwater fish stay above it.

Techniques for clear water

finesse: drop-shot, wacky/ned rignatural translucent colorslonger casts, fish low light

Season-by-season on Opal Lake

Season	Where	Structure	How
Spring	shallow 1–6 ft	protected bays, pads, laydowns, warming flats	soft plastics, jigs, lipless cranks pre-spawn
Summer	shallow-to-mid 3–15 ft	weed edges, docks, lily pads, deep weedlines	topwater at dawn/dusk, Texas-rigged plastics, frogs
Fall	shallow 2–10 ft	bays chasing baitfish, remaining green weeds	spinnerbaits, squarebill cranks, chatterbaits
Winter / Ice	deep 12–25 ft	main-lake basin edges (largely dormant in the north)	slow finesse — a marginal cold-water bite

Northern Pike

Game FishFallFall feed-up

Very Good

~65°F est.

Opal Lake runs 15.5 ft of clarity — so finesse presentations and natural colors on light line tend to out-fish reaction baits.

Because Opal Lake averages 15.5 ft of visibility (clear), so finesse presentations and natural colors on light line tend to out-fish reaction baits.
Its oligotrophic nutrient level puts the summer weedline near 15–20 ft — that edge is the high-percentage zone to hold northern pike through the warm months.
With a max depth of 40 ft, Opal Lake is deep enough to stratify in summer, so coldwater fish hold near the thermocline while warmwater fish stay above it.

Techniques for clear water

jerkbaits & bucktailsnatural perch/cisco colors

Season-by-season on Opal Lake

Season	Where	Structure	How
Spring	shallow 2–8 ft	weedy bays, marsh mouths, warming flats	spoons, spinnerbaits, big soft plastics
Summer	weed edges 6–18 ft; big pike deeper/cooler	cabbage/coontail edges, deep weedlines, cool water	large spoons, jerkbaits, dead-bait for big fish
Fall	variable 6–25 ft	deep weed edges, drop-offs, cisco/tullibee lakes	big swimbaits, sucker/dead-bait rigs — trophy season
Winter / Ice	6–20 ft	weed edges and flats	tip-ups with large shiners/suckers

Rainbow Trout

Trout, Salmon & ColdwaterFallFall feed-up

Prime

~65°F est.

Opal Lake runs 15.5 ft of clarity — so finesse presentations and natural colors on light line tend to out-fish reaction baits.

Because Opal Lake averages 15.5 ft of visibility (clear), so finesse presentations and natural colors on light line tend to out-fish reaction baits.
Its oligotrophic nutrient level puts the summer weedline near 15–20 ft — that edge is the high-percentage zone to hold rainbow trout through the warm months.
With a max depth of 40 ft, Opal Lake is deep enough to stratify in summer, so coldwater fish hold near the thermocline while warmwater fish stay above it.

Techniques for clear water

spoons, spinners & flies, light linenatural presentations

Season-by-season on Opal Lake

Season	Where	Structure	How
Spring	shallow-to-mid 3–15 ft	near shore and inflows in cool water	spoons, spinners, PowerBait, flies
Summer	deep near thermocline 15–35 ft	cold oxygenated layer over the basin	trolling spoons/flies at depth
Fall	shallow-to-mid 3–20 ft	cooling water brings them up	spoons, spinners, flies
Winter / Ice	5–25 ft	clear lakes / stocked ice fishery	small jigs, spoons, PowerBait

Yellow Perch

PanfishFallFall feed-up

Very Good

~65°F est.

Opal Lake runs 15.5 ft of clarity — so finesse presentations and natural colors on light line tend to out-fish reaction baits.

Because Opal Lake averages 15.5 ft of visibility (clear), so finesse presentations and natural colors on light line tend to out-fish reaction baits.
Its oligotrophic nutrient level puts the summer weedline near 15–20 ft — that edge is the high-percentage zone to hold yellow perch through the warm months.
With a max depth of 40 ft, Opal Lake is deep enough to stratify in summer, so coldwater fish hold near the thermocline while warmwater fish stay above it.

Techniques for clear water

small natural jigs & drop-shotminnows/plastics, light line

Season-by-season on Opal Lake

Season	Where	Structure	How
Spring	shallow 4–12 ft	weedy/soft-bottom flats, spawning cover	small jigs, minnows, worms
Summer	mid 10–25 ft	sand and gravel flats, weed edges	drop-shot & jigs with minnows/plastics
Fall	mid-to-deep 15–35 ft	basin flats — schools pack up	jigging small spoons and minnows
Winter / Ice	15–35 ft	deep flats and basin	tungsten jigs and small spoons — a top ice target

Pumpkinseed Sunfish

PanfishFallFall feed-up

Very Good

~65°F est.

Opal Lake runs 15.5 ft of clarity — so finesse presentations and natural colors on light line tend to out-fish reaction baits.

Because Opal Lake averages 15.5 ft of visibility (clear), so finesse presentations and natural colors on light line tend to out-fish reaction baits.
Its oligotrophic nutrient level puts the summer weedline near 15–20 ft — that edge is the high-percentage zone to hold pumpkinseed sunfish through the warm months.
With a max depth of 40 ft, Opal Lake is deep enough to stratify in summer, so coldwater fish hold near the thermocline while warmwater fish stay above it.

Techniques for clear water

tiny natural jigs & flies

Season-by-season on Opal Lake

Season	Where	Structure	How
Spring	shallow 1–5 ft	warm weedy bays, cover	small jigs, worm under a float
Summer	shallow-to-mid 3–12 ft	weed beds, docks	small jigs and flies
Fall	mid 6–15 ft	weed edges	small jigs
Winter / Ice	6–15 ft	weed edges and holes	ice jigs with grubs

The outlook is a transparent heuristic weighting of established angling factors, this lake's measured water quality, and live conditions — not a validated catch predictor. Water temperature is estimated from season and latitude unless a recent USGS gauge reading is available. Planning a meal? Check fish-consumption advisories for Opal Lake. Always follow current state regulations.

14-Day Fishing Calendar

Plan the next two weeks on Opal Lake. Anglers target Bluntnose minnow, Common shiner, Johnny darter, Largemouth bass, and others on Opal Lake.

Date	Rating	Moon	Sunrise	Sunset	Major Periods	Minor Periods
Tue, Sep 8	½☆☆☆☆	Waning Crescent 11% lit	7:09 AM	8:03 PM	10:04 PM – 12:04 AM 10:31 AM – 12:31 PM	3:20 AM – 4:20 AM 6:26 PM – 7:26 PM
Wed, Sep 9	★☆☆☆☆	Waning Crescent 5% lit	7:10 AM	8:01 PM	10:58 PM – 12:58 AM 11:23 AM – 1:23 PM	4:41 AM – 5:41 AM 6:50 PM – 7:50 PM
Thu, Sep 10	★½☆☆☆	Waning Crescent 2% lit	7:11 AM	7:59 PM	11:48 PM – 1:48 AM 12:12 PM – 2:12 PM	5:59 AM – 6:59 AM 7:11 PM – 8:11 PM
Fri, Sep 11	★★½☆☆	New Moon 0% lit	7:12 AM	7:57 PM	12:36 AM – 2:36 AM 12:59 PM – 2:59 PM	7:14 AM – 8:14 AM
Sat, Sep 12	★★☆☆☆	New Moon 1% lit	7:13 AM	7:55 PM	1:22 AM – 3:22 AM 1:45 PM – 3:45 PM	7:30 PM – 8:30 PM 8:28 AM – 9:28 AM
Sun, Sep 13	★½☆☆☆	Waxing Crescent 4% lit	7:14 AM	7:53 PM	2:07 AM – 4:07 AM 2:30 PM – 4:30 PM	7:49 PM – 8:49 PM 9:40 AM – 10:40 AM
Mon, Sep 14	½☆☆☆☆	Waxing Crescent 9% lit	7:16 AM	7:51 PM	2:53 AM – 4:53 AM 3:16 PM – 5:16 PM	8:10 PM – 9:10 PM 10:51 AM – 11:51 AM
Tue, Sep 15	☆☆☆☆☆	Waxing Crescent 16% lit	7:17 AM	7:50 PM	3:40 AM – 5:40 AM 4:04 PM – 6:04 PM	8:33 PM – 9:33 PM 12:01 PM – 1:01 PM
Wed, Sep 16	☆☆☆☆☆	Waxing Crescent 24% lit	7:18 AM	7:48 PM	4:28 AM – 6:28 AM 4:53 PM – 6:53 PM	9:00 PM – 10:00 PM 1:08 PM – 2:08 PM
Thu, Sep 17	★½☆☆☆	Waxing Crescent 34% lit	7:19 AM	7:46 PM	5:18 AM – 7:18 AM 5:44 PM – 7:44 PM	9:34 PM – 10:34 PM 2:10 PM – 3:10 PM
Fri, Sep 18	★★½☆☆	First Quarter 44% lit	7:20 AM	7:44 PM	6:09 AM – 8:09 AM 6:34 PM – 8:34 PM	10:15 PM – 11:15 PM 3:05 PM – 4:05 PM
Sat, Sep 19	★★☆☆☆	First Quarter 55% lit	7:22 AM	7:42 PM	7:00 AM – 9:00 AM	11:05 PM – 12:05 AM 3:51 PM – 4:51 PM
Sun, Sep 20	★☆☆☆☆	Waxing Gibbous 65% lit	7:23 AM	7:40 PM	7:25 PM – 9:25 PM 7:50 AM – 9:50 AM	12:02 AM – 1:02 AM 4:29 PM – 5:29 PM
Mon, Sep 21	☆☆☆☆☆	Waxing Gibbous 75% lit	7:24 AM	7:38 PM	8:15 PM – 10:15 PM 8:39 AM – 10:39 AM	1:06 AM – 2:06 AM 5:00 PM – 6:00 PM

Server-rendered 14-day calendar starting 2026-09-08. Live in your browser shortly.

Methodology

How this forecast works

A plain solunar table only knows the moon. The LakeQuality Fishing Forecast starts there and adds what actually decides where and how fish bite on Opal Lake — factors we measure rather than guess:

Water clarity — Opal Lake's Secchi reading flips the playbook between clear-water finesse and stained-water reaction baits, and sets the low-light bite window.
Trophic state & depth — nutrient level and max depth set the summer weedline and whether the lake stratifies, which tells you how deep to fish.
Water-body type — natural lake vs. reservoir changes the structure that holds fish.
Species & season — each species' spawn-temperature window and seasonal movements, matched to the lake's estimated water temperature.
Sun & moon — the solunar major/minor periods and dawn/dusk twilight in the calendar below.

The species outlook is a transparent heuristic weighting of these established factors, and it now also factors in today's live conditions — wind, cloud cover, and the barometric (pressure) trend, recomputed for the current day. It's not a validated catch predictor, and water temperature is still an estimate from season and latitude unless a recent USGS gauge reading exists. It's the analysis a solunar table can't do, grounded in Opal Lake's real, measured water quality.

How to read the calendar

Major periods (≈2 hours) are centered on lunar transit (when the moon is highest in the sky) and lunar opposition (when the moon is directly underfoot). These are typically the strongest feeding windows.

Minor periods (≈1 hour) are centered on moonrise and moonset. They're secondary windows that often produce well — especially when they coincide with sunrise or sunset.

Day rating combines moon phase (peak near new and full moons, when lunar gravity is strongest) with the overlap of major periods and the dawn/dusk twilight. A 4–5 star day stacks all three.

At Opal Lake (lat 44.93°N), the longest day of the year is around June 21 with 15h 36m of daylight. The shortest is around December 21 with 8h 46m. Plan summer trips around the early-morning bite (around 5:30 AM) and the long evening window before sunset.

Frequently asked questions

What makes this better than a solunar fishing table for Opal Lake?

A solunar table only uses the moon. The LakeQuality Fishing Forecast adds Opal Lake's measured water quality — its clear water, trophic state, depth, and water-body type — matched to each species' spawn window and seasonal movements. That measured data drives where the fish hold and which techniques fit this lake's water, then the solunar calendar below adds the sun/moon timing. It's a transparent, multi-factor outlook, not a validated catch guarantee.

What is the best time to fish Opal Lake today?

Today's solunar calendar for Opal Lake (lat 44.93, lon -84.61) shows sunrise at 7:09 AM and sunset at 8:03 PM. The strongest fishing windows are around major solunar periods at 10:04 PM–12:04 AM and 10:31 AM–12:31 PM, plus the 30-90 minutes around dawn and dusk.

What does the moon phase mean for fishing Opal Lake?

Solunar theory holds that fish activity peaks during major periods (when the moon is overhead or directly underfoot) and minor periods (moonrise and moonset). Fish feeding tends to intensify during the days surrounding the new moon and full moon, when lunar gravity is strongest. Today's moon at Opal Lake is Waning Crescent (11% illuminated).

When are the longest and shortest days at Opal Lake?

At Opal Lake's latitude (44.93°N), the longest day of the year is around June 21 with about 15h 36m of daylight. The shortest day is around December 21 with about 8h 46m of daylight. Sunrise and sunset shift by roughly 6 hours between solstices.

Are major or minor solunar periods more important?

Major periods (about 2 hours, centered on lunar transit and lunar opposition) are generally considered the strongest feeding windows. Minor periods (about 1 hour, centered on moonrise and moonset) are secondary but still productive — especially when they overlap with sunrise or sunset.

More for Opal Lake

Where to stay near Opal Lake

Top-rated places to stay near Opal Lake

Prices for Sep 11–13, 4 adults. Change dates on the map below.

See the full where-to-stay map for Opal Lake →

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The species outlook is a transparent, multi-factor heuristic built from Opal Lake's measured water quality (clarity, trophic state, depth, water-body type) and established species biology, and it now also factors in today's live conditions — wind, cloud cover, and the barometric (pressure) trend, recomputed for the current day. It's not a validated catch predictor, and water temperature is still an estimate from season and latitude unless a recent USGS gauge reading is available. Solunar times use lat/lon and Meeus astronomical formulas, shown in Eastern Time. Always check local regulations and current conditions before fishing.

Source: EPA National Aquatic Resource Surveys, 2026.

Where to stay near Opal Lake →