Water Temperature of Lake Superior in Terrace Bay Township, Ontario

Current Water Temperature

15.4°C

Measurement Time: Tuesday, August 5, 2025, 3:00 PM EDT

Temperature Locations

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Local Points of Interest

Patterson Island; Pukaskwa National Park

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Lake Superior

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

20.9°C
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 75%
Feels Like: 20.9°C
Wind: S 5.8 mph
Wind Gusts: 9.2 mph
Pressure: 30.34 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 4.2

Five Day Weather Forecast

Fog
Tue
H: 17°C
L: 13°C
Partly Cloudy
Wed
H: 19°C
L: 14°C
Moderate rain
Thu
H: 15°C
L: 13°C
Patchy rain nearby
Fri
H: 20°C
L: 14°C
Moderate rain
Sat
H: 20°C
L: 17°C

Air Quality

AQI: 2 - Moderate
PM2.5: 39.02 μg/m3
PM10: 39.37 μg/m3
Carbon Monoxide: 523.8 μg/m3
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 0.18 μg/m3
Ozone: 92 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:53 PM
Sunset: 9:18 PM
Daylight: 14 hrs 50 mins
Moonrise: 7:36 PM
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 PM
12:00 AM - 12:00 AM

Minor Periods

7:06 PM - 8:36 PM
1:23 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.


Tuesday, August 5, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 14.8°C
Average Humidity: 95%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 1.6

Air Quality

AQI: 2 - Moderate
PM2.5: 37.73 μg/m3
PM10: 38.26 μg/m3
Carbon Monoxide: 525.7 μg/m3
Nitrogen Dioxide: 1.09 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 76.16 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:53 PM
Sunset: 9:18 PM
Daylight: 14 hrs 50 mins
Moonrise: 7:36 PM
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 PM
12:00 AM - 12:00 AM

Minor Periods

7:06 PM - 8:36 PM
1:23 AM - 2:53 AM

Action Rating: 2 out of 5

Wednesday, August 6, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 16.2°C
Average Humidity: 89%
Chance of Rain: 0%
Wind: 8.5 mph
UV Index: 1.3

Air Quality

AQI: 2 - Moderate
PM2.5: 29.4 μg/m3
PM10: 29.75 μg/m3
Carbon Monoxide: 470.29 μg/m3
Nitrogen Dioxide: 0.97 μg/m3
Sulphur Dioxide: 0.44 μg/m3
Ozone: 86.08 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:53 PM
Sunset: 9:17 PM
Daylight: 14 hrs 47 mins
Moonrise: 8:21 PM
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 AM
11:34 AM - 2:04 PM

Minor Periods

7:51 PM - 9:21 PM
2:20 AM - 3:50 AM

Action Rating: 3 out of 5

Thursday, August 7, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 14.5°C
Average Humidity: 97%
Chance of Rain: 84%
Wind: 10.5 mph
UV Index: 0.8

Air Quality

AQI: 2 - Moderate
PM2.5: 26.32 μg/m3
PM10: 26.6 μg/m3
Carbon Monoxide: 416.44 μg/m3
Nitrogen Dioxide: 0.91 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 110.08 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:53 PM
Sunset: 9:15 PM
Daylight: 14 hrs 44 mins
Moonrise: 8:54 PM
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 AM
12:30 AM - 3:00 PM

Minor Periods

8:24 PM - 9:54 PM
3:29 AM - 4:59 AM

Action Rating: 2 out of 5

Friday, August 8, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 16°C
Average Humidity: 94%
Chance of Rain: 68%
Wind: 6.9 mph
UV Index: 0.9

Air Quality

AQI: 1 - Good
PM2.5: 8.89 μg/m3
PM10: 9.14 μg/m3
Carbon Monoxide: 368.91 μg/m3
Nitrogen Dioxide: 0.87 μg/m3
Sulphur Dioxide: 0.04 μg/m3
Ozone: 105.84 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:53 PM
Sunset: 9:14 PM
Daylight: 14 hrs 41 mins
Moonrise: 9:20 PM
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 AM
1:22 PM - 3:52 PM

Minor Periods

8:50 PM - 10:20 PM
4:45 AM - 6:15 AM

Action Rating: 5 out of 5

Saturday, August 9, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 18°C
Average Humidity: 98%
Chance of Rain: 85%
Wind: 10.7 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 16.28 μg/m3
PM10: 16.87 μg/m3
Carbon Monoxide: 416.04 μg/m3
Nitrogen Dioxide: 1.01 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 124.08 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 1:53 PM
Sunset: 9:12 PM
Daylight: 14 hrs 38 mins
Moonrise: 9:40 PM
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 AM
2:12 PM - 4:42 PM

Minor Periods

9:10 PM - 10:40 PM
6:06 AM - 7:36 AM

Action Rating: 5 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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