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

73.9°F
Sunny
Sunny
76.5°F
76.1°F
53%
SE 4.7 mph
9.9 mph
72.9°F
51°F
0 in
0%
6 mi
1016 mbar
7.5

Five Day Weather Forecast

Sunny
Fri
H: 75°F
L: 63°F
Sunny
Sat
H: 72°F
L: 56°F
Patchy rain nearby
Sun
H: 56°F
L: 51°F
Fog
Mon
H: 56°F
L: 51°F
Fog
Tue
H: 59°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 2.6 μg/m3
PM10: 2.7 μg/m3
Carbon Monoxide: 144 μg/m3
Nitrogen Dioxide: 0.6 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 86 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:52 PM
Sunset: 9:31 PM
Daylight: 15 hrs 16 mins
Moonrise: 6:26 PM
Moon Transit: 10:15 PM
Moonset: 1:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

9:49 AM - 12:19 AM
12:00 AM - 12:00 AM

Minor Periods

5:56 PM - 7:26 PM
12:56 AM - 2:26 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 24 at 10:36AM EDT until July 25 at 11:00AM EDT by NWS Marquette MI

Effective: Fri July 24, 2026, 10:36 AM
Expires: Fri July 24, 2026, 10:45 PM

* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves 2 to 4 ft expected. * WHERE...Eagle River to Manitou Island MI. * WHEN...From 6 AM to 11 AM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued July 24 at 3:57AM EDT until July 25 at 11:00AM EDT by NWS Marquette MI

Effective: Fri July 24, 2026, 3:57 AM
Expires: Fri July 24, 2026, 4:00 PM

* WHAT...Southwest winds 15 to 20 kt with gusts up to 25 kt and waves 1 to 4 ft expected. * WHERE...Ontonagon to Upper Entrance of Portage Canal MI and Upper Entrance of Portage Canal to Eagle River MI. * WHEN...From 11 PM this evening to 11 AM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued July 24 at 10:36AM EDT until July 25 at 11:00AM EDT by NWS Marquette MI

Effective: Fri July 24, 2026, 10:36 AM
Expires: Fri July 24, 2026, 10:45 PM

* WHAT...Southwest winds 15 to 20 kt with gusts up to 25 kt and waves 1 to 4 ft expected. * WHERE...Ontonagon to Upper Entrance of Portage Canal MI and Upper Entrance of Portage Canal to Eagle River MI. * WHEN...From 11 PM this evening to 11 AM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Friday, July 24, 2026

Weather Forecast

Sunny
74.7°F
63°F
69.4°F
54%
0 in
2%
0%
14.8 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 3.75 μg/m3
PM10: 3.86 μg/m3
Carbon Monoxide: 131.75 μg/m3
Nitrogen Dioxide: 1.02 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 87.83 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:52 PM
Sunset: 9:31 PM
Daylight: 15 hrs 16 mins
Moonrise: 6:26 PM
Moon Transit: 10:15 PM
Moonset: 1:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

9:49 AM - 12:19 AM
12:00 AM - 12:00 AM

Minor Periods

5:56 PM - 7:26 PM
12:56 AM - 2:26 AM

Action Rating: 3 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
71.6°F
55.5°F
59.3°F
91%
0.33 in
83%
0%
14.5 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 6.12 μg/m3
PM10: 6.3 μg/m3
Carbon Monoxide: 131.79 μg/m3
Nitrogen Dioxide: 1.13 μg/m3
Sulphur Dioxide: 0.19 μg/m3
Ozone: 95.83 μg/m3

Astronomical

Sunrise: 6:16 AM
Sun Transit: 1:52 PM
Sunset: 9:29 PM
Daylight: 15 hrs 14 mins
Moonrise: 7:23 PM
Moon Transit: 11:07 PM
Moonset: 2:04 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

10:39 AM - 1:09 PM
12:00 AM - 12:00 AM

Minor Periods

6:53 PM - 8:23 PM
1:34 AM - 3:04 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Patchy rain nearby
56.2°F
50.5°F
52.9°F
99%
0.02 in
66%
0%
10.7 mph
5.5


Air Quality

AQI: 1 - Good
PM2.5: 4.16 μg/m3
PM10: 4.33 μg/m3
Carbon Monoxide: 125.33 μg/m3
Nitrogen Dioxide: 0.91 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 82.67 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
55.5°F
51.3°F
53.6°F
98%
0.03 in
69%
0%
12.5 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 0.52 μg/m3
PM10: 0.54 μg/m3
Carbon Monoxide: 134.83 μg/m3
Nitrogen Dioxide: 0.79 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 69.67 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
58.7°F
49.4°F
52.7°F
95%
0.01 in
46%
0%
8.9 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 1.59 μg/m3
PM10: 1.69 μg/m3
Carbon Monoxide: 203.44 μg/m3
Nitrogen Dioxide: 0.71 μg/m3
Sulphur Dioxide: 0.21 μg/m3
Ozone: 58.78 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

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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