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

67.5°F
Partly Cloudy
Partly Cloudy
67.6°F
67.5°F
86%
NNE 7.8 mph
16.4 mph
67.5°F
63.1°F
0 in
36%
6 mi
1015 mbar
3.3

Five Day Weather Forecast

Sunny
Sat
H: 69°F
L: 58°F
Sunny
Sun
H: 61°F
L: 53°F
Sunny
Mon
H: 61°F
L: 56°F
Sunny
Tue
H: 64°F
L: 59°F
Sunny
Wed
H: 60°F
L: 54°F

Air Quality

AQI: 1 - Good
PM2.5: 2.1 μg/m3
PM10: 2.2 μg/m3
Carbon Monoxide: 123 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.2 μg/m3
Ozone: 57 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:52 PM
Sunset: 9:20 PM
Daylight: 14 hrs 56 mins
Moonrise: 10:35 PM
Moon Transit: 3:52 AM
Moonset: 9:37 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
4:11 PM - 6:41 PM

Minor Periods

10:05 PM - 11:35 PM
9:07 AM - 10:37 AM

Action Rating: 2 out of 5

Dense Fog Advisory issued August 1 at 6:38AM EDT until August 1 at 5:00PM EDT by NWS Marquette MI

Effective: Sat August 1, 2026, 6:38 AM
Expires: Sat August 1, 2026, 5:00 PM

* WHAT...Dense fog will reduce visibility to less than one nautical mile. * WHERE...Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore and 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. * WHEN...Until 5 PM EDT this afternoon. * 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 August 1 at 10:53AM EDT until August 1 at 5:00PM EDT by NWS Marquette MI

Effective: Sat August 1, 2026, 10:53 AM
Expires: Sat August 1, 2026, 5:00 PM

* WHAT...Dense fog will reduce visibility to less than one nautical mile at times. * WHERE...Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore and 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. * WHEN...Until 5 PM EDT this afternoon. * 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.
Saturday, August 1, 2026

Weather Forecast

Sunny
69.4°F
57.7°F
63.8°F
86%
0 in
15%
0%
12.1 mph
3.3


Air Quality

AQI: 1 - Good
PM2.5: 3.31 μg/m3
PM10: 3.44 μg/m3
Carbon Monoxide: 123.96 μg/m3
Nitrogen Dioxide: 0.59 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 60.08 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:52 PM
Sunset: 9:20 PM
Daylight: 14 hrs 56 mins
Moonrise: 10:35 PM
Moon Transit: 3:52 AM
Moonset: 9:37 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
4:11 PM - 6:41 PM

Minor Periods

10:05 PM - 11:35 PM
9:07 AM - 10:37 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
61.3°F
52.8°F
57.2°F
78%
0 in
8%
0%
7.4 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 1.88 μg/m3
PM10: 2.01 μg/m3
Carbon Monoxide: 103.75 μg/m3
Nitrogen Dioxide: 0.55 μg/m3
Sulphur Dioxide: 0.24 μg/m3
Ozone: 54.08 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:52 PM
Sunset: 9:19 PM
Daylight: 14 hrs 53 mins
Moonrise: 10:51 PM
Moon Transit: 4:35 AM
Moonset: 10:50 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

4:05 AM - 6:35 AM
6:20 PM - 8:50 PM

Minor Periods

10:21 PM - 11:51 PM
10:20 AM - 11:50 AM

Action Rating: 4 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
60.6°F
56°F
58.5°F
68%
0 in
5%
0%
19.9 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 1.16 μg/m3
PM10: 1.2 μg/m3
Carbon Monoxide: 111.83 μg/m3
Nitrogen Dioxide: 1.03 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 56.21 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 1:52 PM
Sunset: 9:17 PM
Daylight: 14 hrs 51 mins
Moonrise: 11:07 PM
Moon Transit: 5:18 AM
Moonset: 12:03 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
5:39 PM - 8:09 PM

Minor Periods

12:00 AM - 12:00 AM
11:33 AM - 1:03 PM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
64°F
59.3°F
61.7°F
80%
0.04 in
57%
0%
15.7 mph
4.4


Air Quality

AQI: 1 - Good
PM2.5: 3.34 μg/m3
PM10: 3.43 μg/m3
Carbon Monoxide: 123.83 μg/m3
Nitrogen Dioxide: 1.13 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 76.58 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:52 PM
Sunset: 9:16 PM
Daylight: 14 hrs 48 mins
Moonrise: 12:07 AM
Moon Transit: 6:04 AM
Moonset: 1:19 PM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:34 AM - 8:04 AM
6:26 PM - 8:56 PM

Minor Periods

12:49 AM - 2:19 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, August 5, 2026

Weather Forecast

Sunny
59.9°F
53.6°F
56.8°F
80%
0 in
11%
0%
11.9 mph
6.4


Air Quality

AQI: 1 - Good
PM2.5: 2.23 μg/m3
PM10: 2.3 μg/m3
Carbon Monoxide: 193.78 μg/m3
Nitrogen Dioxide: 1.31 μg/m3
Sulphur Dioxide: 0.22 μg/m3
Ozone: 66.89 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 1:52 PM
Sunset: 9:14 PM
Daylight: 14 hrs 45 mins
Moonrise: 12:26 AM
Moon Transit: 6:53 AM
Moonset: 2:39 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

6:23 AM - 8:53 AM
7:17 PM - 9:47 PM

Minor Periods

2:09 PM - 3:39 PM
12:00 AM - 12:00 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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