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

63.9°F
Clear
Clear
55.4°F
63.9°F
81%
W 2.2 mph
4.7 mph
63.9°F
58°F
0 in
0%
0 mi
1010 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 75°F
L: 52°F
Fog
Mon
H: 56°F
L: 51°F
Fog
Tue
H: 58°F
L: 50°F
Sunny
Wed
H: 58°F
L: 51°F
Sunny
Thu
H: 62°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 1.5 μg/m3
PM10: 1.6 μg/m3
Carbon Monoxide: 129 μg/m3
Nitrogen Dioxide: 0.9 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:52 PM
Sunset: 9:28 PM
Daylight: 15 hrs 11 mins
Moonrise: 8:12 PM
Moon Transit: 11:58 PM
Moonset: 2:51 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

11:31 AM - 2:01 PM
12:00 AM - 12:00 AM

Minor Periods

7:42 PM - 9:12 PM
2:21 AM - 3:51 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued July 25 at 9:50PM EDT until July 26 at 11:00AM EDT by NWS Marquette MI

Effective: Sat July 25, 2026, 9:50 PM
Expires: Sun July 26, 2026, 11:00 AM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border, Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore and Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border. * WHEN...Until 11 AM EDT Sunday. * 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.


Dense Fog Advisory issued July 26 at 1:45AM EDT until July 26 at 11:00AM EDT by NWS Marquette MI

Effective: Sun July 26, 2026, 1:45 AM
Expires: Sun July 26, 2026, 11:00 AM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border, Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore and Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border. * 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.
Sunday, July 26, 2026

Weather Forecast

Sunny
75.4°F
52.2°F
65.6°F
83%
0.02 in
42%
0%
11.4 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 3.63 μg/m3
PM10: 3.76 μg/m3
Carbon Monoxide: 130.88 μg/m3
Nitrogen Dioxide: 1.05 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 83.33 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:52 PM
Sunset: 9:28 PM
Daylight: 15 hrs 11 mins
Moonrise: 8:12 PM
Moon Transit: 11:58 PM
Moonset: 2:51 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

11:31 AM - 2:01 PM
12:00 AM - 12:00 AM

Minor Periods

7:42 PM - 9:12 PM
2:21 AM - 3:51 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Fog
56.4°F
50.8°F
53.3°F
99%
0.11 in
87%
0%
10.7 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 1.95 μg/m3
PM10: 2.01 μg/m3
Carbon Monoxide: 124.21 μg/m3
Nitrogen Dioxide: 0.86 μg/m3
Sulphur Dioxide: 0.21 μg/m3
Ozone: 70.33 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 1:52 PM
Sunset: 9:27 PM
Daylight: 15 hrs 9 mins
Moonrise: 8:50 PM
Moon Transit: 12:00 AM
Moonset: 3:49 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:22 AM - 2:52 PM

Minor Periods

8:20 PM - 9:50 PM
3:19 AM - 4:49 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Fog
58.1°F
49.9°F
53°F
96%
0.01 in
52%
0%
8.9 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 3.14 μg/m3
Carbon Monoxide: 107.79 μg/m3
Nitrogen Dioxide: 0.74 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 53.58 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:52 PM
Sunset: 9:26 PM
Daylight: 15 hrs 6 mins
Moonrise: 9:20 PM
Moon Transit: 12:49 AM
Moonset: 4:54 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
1:12 PM - 3:42 PM

Minor Periods

8:50 PM - 10:20 PM
4:24 AM - 5:54 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
58°F
51.3°F
53.9°F
81%
0 in
10%
0%
9.2 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 1.53 μg/m3
PM10: 1.68 μg/m3
Carbon Monoxide: 108.74 μg/m3
Nitrogen Dioxide: 0.99 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 51.83 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:52 PM
Sunset: 9:24 PM
Daylight: 15 hrs 4 mins
Moonrise: 9:43 PM
Moon Transit: 1:37 AM
Moonset: 6:04 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
1:59 PM - 4:29 PM

Minor Periods

9:13 PM - 10:43 PM
5:34 AM - 7:04 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Sunny
61.5°F
56.6°F
59°F
69%
0.01 in
36%
0%
13 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 0.82 μg/m3
PM10: 0.97 μg/m3
Carbon Monoxide: 148.56 μg/m3
Nitrogen Dioxide: 0.93 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 65.33 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:52 PM
Sunset: 9:23 PM
Daylight: 15 hrs 1 mins
Moonrise: 10:03 PM
Moon Transit: 2:24 AM
Moonset: 7:15 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
2:45 PM - 5:15 PM

Minor Periods

9:33 PM - 11:03 PM
6:45 AM - 8:15 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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