Great Slave Lake NWT fishing forecast
Great Slave Lake NWT is a freshwater fishing spot in Northwest Territories, Canada. Anglers here target Lake Trout, Arctic Grayling, Northern Pike, Walleye. The most productive months are typically June, July, August, September.
Current conditions
| Sea surface temp | 13.9 °C |
|---|---|
| Wind | 14 km/h from SSW |
| Wave height | 0.1 m at 2 s |
| Pressure | 1012 hPa |
| Cloud cover | 0% |
Last updated Jul 22, 2026 (UTC). Conditions refresh through the day.
What the score means at Great Slave Lake NWT
Great Slave Lake NWT currently scores 76 out of 100 (Hot). Water temperature is 13.9 °C. 7 forecast signals are active in this score. As a rough guide, a score above ~65 reflects conditions experienced anglers would typically fish; below ~45, consider waiting for a better window or targeting different species. The score blends live weather and ocean signals and can change through the day.
Bite windows
Best months for Great Slave Lake NWT:
About this spot
Lakes have no tide, so target structure, drop-offs, and seasonal thermoclines where fish concentrate by depth and temperature.
What you can catch
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Salvelinus namaycush
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Thymallus arcticus
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Esox lucius
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Sander vitreus
Best months by species at Great Slave Lake NWT
| Lake TroutSalvelinus namaycush | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arctic GraylingThymallus arcticus | ||||||||||||
| Northern PikeEsox lucius | ||||||||||||
| WalleyeSander vitreus |
Months reflect typical catchability by species at this latitude; local seasons and closures apply.
Local regulations
Licensing:
- saltwater-recreational — residents A recreational (tidal/marine) fishing licence issued by Fisheries and Oceans Canada (DFO) is required. Licences are region-specific (e.g. the BC Tidal Waters Sport Fishing Licence on the Pacific coast). Obtain them through the National Recreational Licensing System., non-residents Non-residents need the same DFO recreational tidal/marine licence for the relevant region.
- freshwater-recreational — residents Inland/freshwater angling licences are issued by each province or territory, not by DFO. Rules, seasons and fees vary by province., non-residents Non-residents need the relevant provincial/territorial freshwater angling licence.
FishRadar regulations are summaries for informational purposes only. Canadian recreational fishing rules vary by region, province/territory and species, and are set by Fisheries and Oceans Canada (marine) and provincial authorities (inland). Always verify current rules with DFO at dfo-mpo.gc.ca and your provincial authority before fishing.
Check Great Slave Lake NWT before you go
Live scores update through the day. Get the full forecast, bite windows, and your own saved spots in the FishRadar app.
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Nearby spots
Explore 5 more fishing spots within 1241 km of Great Slave Lake NWT.
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Lake Athabasca
Great Bear Lake NWT
Reindeer Lake Saskatchewan
Cambridge Bay Nunavut Canada
Prince Rupert Skeena
Frequently asked questions
What fish can you catch at Great Slave Lake NWT?
Anglers at Great Slave Lake NWT target Lake Trout, Arctic Grayling, Northern Pike and Walleye.
When is the best time to fish Great Slave Lake NWT?
The most productive months at Great Slave Lake NWT are typically June, July, August, September.
What is the fishing forecast for Great Slave Lake NWT right now?
Great Slave Lake NWT currently scores 76 out of 100, based on live ocean and weather conditions — see the full breakdown on this page.
Do you need a licence to fish Great Slave Lake NWT?
Fishing at Great Slave Lake NWT follows the local rules for Northwest Territories, Canada. Bag limits, size limits, seasons and licence requirements are summarised in the Local regulations section above, with a link to the official authority.
Fishing guides for this spot
- How to Catch TroutHow to Catch Arctic Grayling: The Sail-Finned Jewel of the NorthBest Time of Day to Fish
Scores and conditions are forecasts for guidance only and can change rapidly. Always check local rules and current conditions, follow all fishing regulations, and prioritise your safety on the water.