Water Temperature of Lake Superior in Terrace Bay Township, Ontario
Current Water Temperature
Measurement Time: Tuesday, August 5, 2025, 3:00 PM EDT
Temperature Locations
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Local Points of Interest
Patterson Island; Pukaskwa National ParkSponsored Content
Station Name: Slate Island
Station Type: Buoy
Data Source: National Data Buoy Center
Elevation Above Sea Level: 587 feet / 179 meters
Nearest Address:
Terrace Bay Township, ON P0T 2W0
Thunder Bay District County
GPS Coordinates: 48.54, -86.95
Nearby Water Temperatures
Lake Superior, Isle Royale, MI (50.1 mi)Lake Superior, Copper Harbor, MI (68.1 mi)
Washington Creek, Windigo, MI (109.7 mi)
Lake Superior, Calumet, MI (116.6 mi)
Pilgrim River, Houghton, MI (125.0 mi)
Keweenaw Bay, Jacobsville, MI (127.7 mi)
East Branch Salmon Trout River, Powell, MI (128.3 mi)
Salmon Trout River, Champion, MI (128.9 mi)
Grand Portage River, Grand Portage, MN (131.9 mi)
Lake Superior, Marquette, MI (139.2 mi)
Falls River, L'Anse, MI (142.8 mi)
Miners River, Munising, MI (143.1 mi)
Middle Branch Escanaba River, , MI (147.6 mi)
Middle Branch Escanaba River, Humboldt, MI (147.7 mi)
Sturgeon River, Pelkie, MI (148.5 mi)
Weather for Terrace Bay Township, Ontario
Current Weather

Humidity: 75%
Feels Like: 20.9°C
Wind: S 5.8 mph
Wind Gusts: 9.2 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 4.2
Five Day Weather Forecast

Tue
H: 17°C
L: 13°C

Wed
H: 19°C
L: 14°C

Thu
H: 15°C
L: 13°C

Fri
H: 20°C
L: 14°C

Sat
H: 20°C
L: 17°C
Air Quality
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 0.18 μg/m3
Ozone: 92 μg/m3
Astronomical
Sun Transit: 1:53 PM
Sunset: 9:18 PM
Daylight: 14 hrs 50 mins
Moon Transit: 11:12 PM
Moonset: 1:53 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
10:40 AM - 1:10 PM12:00 AM - 12:00 AM
Minor Periods
7:06 PM - 8:36 PM1:23 AM - 2:53 AM
Action Rating: 2 out of 5
avis de brouillard en vigueur
Service Notice – June 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is planned for deployment for later in 2025. Data changes will appear in CAP-CP upon this deployment, 2) SAME event codes for a few alert types are updated and 3) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – juin 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est prévue d’être déployée plus tard en 2025. Des changements aux données apparaîtront dans le PC-PAC lors de ce déploiement, 2) des codes d’événement MSSC pour quelques types d’alerte ont été mis à jour et 3) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/
Effective: Tue August 5, 2025, 8:35 AM
Expires: Tue August 5, 2025, 1:31 PM
Near zero visibility in fog is expected or occurring. Fog is expected to lift later this morning. ### Visibility may be significantly and suddenly reduced to near zero. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
If visibility is reduced while driving, turn on your lights and maintain a safe following distance.
Weather Forecast
Average Temperature: 14.8°C
Average Humidity: 95%
Wind: 8.1 mph
UV Index: 1.6
Air Quality
Nitrogen Dioxide: 1.09 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 76.16 μg/m3
Astronomical
Sun Transit: 1:53 PM
Sunset: 9:18 PM
Daylight: 14 hrs 50 mins
Moon Transit: 11:12 PM
Moonset: 1:53 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
10:40 AM - 1:10 PM12:00 AM - 12:00 AM
Minor Periods
7:06 PM - 8:36 PM1:23 AM - 2:53 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 16.2°C
Average Humidity: 89%
Wind: 8.5 mph
UV Index: 1.3
Air Quality
Nitrogen Dioxide: 0.97 μg/m3
Sulphur Dioxide: 0.44 μg/m3
Ozone: 86.08 μg/m3
Astronomical
Sun Transit: 1:53 PM
Sunset: 9:17 PM
Daylight: 14 hrs 47 mins
Moon Transit: 12:00 AM
Moonset: 2:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:34 AM - 2:04 PM
Minor Periods
7:51 PM - 9:21 PM2:20 AM - 3:50 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 14.5°C
Average Humidity: 97%
Wind: 10.5 mph
UV Index: 0.8
Air Quality
Nitrogen Dioxide: 0.91 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 110.08 μg/m3
Astronomical
Sun Transit: 1:53 PM
Sunset: 9:15 PM
Daylight: 14 hrs 44 mins
Moon Transit: 12:06 AM
Moonset: 3:59 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:30 AM - 3:00 PM
Minor Periods
8:24 PM - 9:54 PM3:29 AM - 4:59 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 16°C
Average Humidity: 94%
Wind: 6.9 mph
UV Index: 0.9
Air Quality
Nitrogen Dioxide: 0.87 μg/m3
Sulphur Dioxide: 0.04 μg/m3
Ozone: 105.84 μg/m3
Astronomical
Sun Transit: 1:53 PM
Sunset: 9:14 PM
Daylight: 14 hrs 41 mins
Moon Transit: 1:00 AM
Moonset: 5:15 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM1:22 PM - 3:52 PM
Minor Periods
8:50 PM - 10:20 PM4:45 AM - 6:15 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 18°C
Average Humidity: 98%
Wind: 10.7 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 1.01 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 124.08 μg/m3
Astronomical
Sun Transit: 1:53 PM
Sunset: 9:12 PM
Daylight: 14 hrs 38 mins
Moon Transit: 1:52 AM
Moonset: 6:36 AM
Moon Phase: Full
Moon Illumination: 99.0%
Best Times for Fishing or Hunting
Major Periods
1:22 AM - 3:52 AM2:12 PM - 4:42 PM
Minor Periods
9:10 PM - 10:40 PM6:06 AM - 7:36 AM
Action Rating: 5 out of 5