Water Temperature of Lake Superior Near Copper Harbor, MI

Current Water Temperature

40.1°F

Measurement Time: Tuesday, December 2, 2025, 1:20 PM EST

Temperature Locations

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Local Points of Interest

Quebec Harbour

Lake Superior

Station Name: EAST SUPERIOR -70 NM NE Marquette, MI
Station Type: Other
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
Offshore
Copper Harbor, MI 49918
Keweenaw County

GPS Coordinates: 47.585, -86.585

Nearby Water Temperatures

Lake Superior, Isle Royale, MI (61.5 mi)
Lake Superior, Terrace Bay Township, ON (68.1 mi)
Miners River, Munising, MI (75.8 mi)
Lake Superior, Marquette, MI (80.9 mi)
East Branch Salmon Trout River, Powell, MI (81.2 mi)
Salmon Trout River, Champion, MI (82.2 mi)
Keweenaw Bay, Jacobsville, MI (95 mi)
Middle Branch Escanaba River, Humboldt, MI (96.6 mi)
Middle Branch Escanaba River, , MI (96.9 mi)
Lake Superior, Calumet, MI (97 mi)
Pilgrim River, Houghton, MI (98.3 mi)
Falls River, L'Anse, MI (105.2 mi)
Sturgeon River, Pelkie, MI (114.2 mi)
Seul Choix Bay, Port Inland, MI (116.6 mi)
Escanaba River, Cornell, MI (119.6 mi)

Weather Near Copper Harbor, Michigan

Current Weather

51.1°F
Sunny
Sunny
49°F
64.9°F
89%
NNE 5.8 mph
12.2 mph
64.9°F
57.5°F
0 in
0%
1 mi
1014 mbar
5.2

Five Day Weather Forecast

Sunny
Thu
H: 71°F
L: 59°F
Sunny
Fri
H: 62°F
L: 49°F
Sunny
Sat
H: 57°F
L: 50°F
Sunny
Sun
H: 67°F
L: 57°F
Sunny
Mon
H: 73°F
L: 63°F

Air Quality

AQI: 1 - Good
PM2.5: 1.6 μg/m3
PM10: 3.1 μg/m3
Carbon Monoxide: 109 μg/m3
Nitrogen Dioxide: 0.8 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 89 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:51 PM
Sunset: 9:44 PM
Daylight: 15 hrs 45 mins
Moonrise: 1:22 AM
Moon Transit: 9:00 AM
Moonset: 4:54 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
9:25 PM - 11:55 PM

Minor Periods

4:24 PM - 5:54 PM
12:52 AM - 2:22 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued July 9 at 4:58AM EDT until July 9 at 11:00AM EDT by NWS Marquette MI

Effective: Thu July 9, 2026, 4:58 AM
Expires: Thu July 9, 2026, 11:00 AM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Portions of Central and Eastern Lake Superior. * WHEN...Until 11 AM EDT this morning. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Thursday, July 9, 2026

Weather Forecast

Sunny
70.7°F
58.6°F
62.5°F
72%
0 in
9%
0%
6 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 2.86 μg/m3
PM10: 4.13 μg/m3
Carbon Monoxide: 111.71 μg/m3
Nitrogen Dioxide: 1.29 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 85.83 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:51 PM
Sunset: 9:44 PM
Daylight: 15 hrs 45 mins
Moonrise: 1:22 AM
Moon Transit: 9:00 AM
Moonset: 4:54 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
9:25 PM - 11:55 PM

Minor Periods

4:24 PM - 5:54 PM
12:52 AM - 2:22 AM

Action Rating: 3 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
61.7°F
49.4°F
53.5°F
81%
0 in
10%
0%
6.9 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 3.65 μg/m3
PM10: 4.12 μg/m3
Carbon Monoxide: 123.88 μg/m3
Nitrogen Dioxide: 1.06 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 87.17 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:51 PM
Sunset: 9:43 PM
Daylight: 15 hrs 44 mins
Moonrise: 1:50 AM
Moon Transit: 9:56 AM
Moonset: 6:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:26 AM - 11:56 AM

Minor Periods

5:49 PM - 7:19 PM
1:20 AM - 2:50 AM

Action Rating: 2 out of 5

Saturday, July 11, 2026

Weather Forecast

Sunny
57.3°F
49.8°F
53.3°F
86%
0 in
18%
0%
11.4 mph
5.8


Air Quality

AQI: 1 - Good
PM2.5: 3.33 μg/m3
PM10: 3.54 μg/m3
Carbon Monoxide: 131.71 μg/m3
Nitrogen Dioxide: 0.9 μg/m3
Sulphur Dioxide: 0.19 μg/m3
Ozone: 75.46 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:51 PM
Sunset: 9:43 PM
Daylight: 15 hrs 42 mins
Moonrise: 2:28 AM
Moon Transit: 10:58 AM
Moonset: 7:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:28 AM - 12:58 AM

Minor Periods

7:10 PM - 8:40 PM
1:58 AM - 3:28 AM

Action Rating: 2 out of 5

Sunday, July 12, 2026

Weather Forecast

Sunny
66.7°F
56.5°F
60.1°F
83%
0.03 in
48%
0%
12.8 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 4.54 μg/m3
PM10: 4.77 μg/m3
Carbon Monoxide: 130.49 μg/m3
Nitrogen Dioxide: 1.05 μg/m3
Sulphur Dioxide: 0.18 μg/m3
Ozone: 88.08 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:52 PM
Sunset: 9:42 PM
Daylight: 15 hrs 41 mins
Moonrise: 3:21 AM
Moon Transit: 12:05 AM
Moonset: 8:49 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:35 AM - 2:05 PM

Minor Periods

8:19 PM - 9:49 PM
2:51 AM - 4:21 AM

Action Rating: 3 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
72.9°F
62.6°F
66.7°F
75%
0 in
8%
0%
25.7 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 5.93 μg/m3
PM10: 6.19 μg/m3
Carbon Monoxide: 170.22 μg/m3
Nitrogen Dioxide: 0.89 μg/m3
Sulphur Dioxide: 0.13 μg/m3
Ozone: 93.44 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:52 PM
Sunset: 9:41 PM
Daylight: 15 hrs 39 mins
Moonrise: 4:31 AM
Moon Transit: 1:11 PM
Moonset: 9:41 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
12:41 AM - 3:11 PM

Minor Periods

9:11 PM - 10:41 PM
4:01 AM - 5:31 AM

Action Rating: 3 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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