Lake life, intelligently.
Know the best lake windows
before you go.
Your morning briefing for better lake days. Glassy shows the best times to boat, fish, swim, sail, or head to a different lake — before you pack the cooler.
Lake life, intelligently.
Your morning briefing for better lake days. Glassy shows the best times to boat, fish, swim, sail, or head to a different lake — before you pack the cooler.
Best boating 8:00–12:30 · Wind building after 2 PM.
Better for swimming after lunch · Choppy by late afternoon.
Fishable early · Gusts limit boating comfort.
Every lake day starts with the same two questions. Glassy answers both before you get out of bed.
See the best windows for boating, swimming, fishing, and wind sports — based on wind, chop, water temperature, storms, and changing conditions through the day.
Compare nearby lakes side by side so you can pick the best lake before you load the boat, pack the cooler, or round up the family.
Each activity runs through its own scoring engine. What's choppy for swimmers can be perfect for wind sports.
Weather apps tell you about the atmosphere. Glassy gives you the lake-day decision.
| What you get | Weather apps | Glassy |
|---|---|---|
| Weather forecast | ✓ | ✓ |
| Lake-day score (1–10) | — | ✓ |
| Best activity window | — | ✓ |
| Multi-lake comparison | — | ✓ |
| Fishing-specific guidance | — | ✓ |
| Lake-specific hazard alerts | some apps | ✓ |
| Local lake context | — | ✓ |
Community Check-ins report actual lake conditions. View recent posts from boaters, swimmers, paddlers, and anglers on the lakes you follow.
Trusted public data, fused into one decision.
Wind, gusts, air temp, sky cover, precip probability — every hour, every pilot lake.
Secchi depth and gauge readings where stations exist.
Species, stocking history, size limits, special regulations, public access points.
Tornado warnings, thunderstorms, small craft advisories, and bite-time predictions so you know when fish are most active.
Add your lake to the pilot. Free for the 30-day trial.
Glassy started with a simple question: how do you actually know if today will be a good lake day? Weather apps give you a forecast — but they don't tell you if chop on the lake will make tubing uncomfortable, or if tonight sets up well for a sunset cruise, or if the walleye bite will be better at sunrise or in the late afternoon.
So we built a daily lake briefing for families, boaters, anglers, swimmers, and wind sports enthusiasts to take advantage of the best windows on your favorite lakes and to do less guessing around when and where to go.
We're starting off with the Wisconsin lakes we grew up on, but we're expanding fast. So if you don't see your lake, let us know and we'll add it. Please share your feedback on how to make Glassy even better. See you on the lake!