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

58.7°F
Overcast
Conditions: Overcast
Humidity: 77%
Feels Like: 50°F
Wind: WSW 16.6 mph
Wind Gusts: 27.8 mph
Pressure: 29.6 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Overcast
Tue
H: 62°F
L: 49°F
Sunny
Wed
H: 57°F
L: 52°F
Patchy rain nearby
Thu
H: 54°F
L: 50°F
Overcast
Fri
H: 57°F
L: 48°F
Overcast
Sat
H: 73°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 3.1 μg/m3
Carbon Monoxide: 128 μg/m3
Nitrogen Dioxide: 2 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 91 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 1:34 PM
Sunset: 7:15 PM
Daylight: 11 hrs 23 mins
Moonrise: 2:59 AM
Moon Transit: 10:26 AM
Moonset: 5:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

5:07 PM - 6:37 PM
2:29 AM - 3:59 AM

Action Rating: 2 out of 5

Small Craft Advisory issued October 6 at 3:08PM EDT until October 8 at 8:00PM EDT by NWS Marquette MI

Effective: Tue October 6, 2026, 3:08 PM
Expires: Wed October 7, 2026, 3:15 AM

* WHAT...For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 25 kt and waves 1 to 3 ft occurring. For the second Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. * WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the first Small Craft Advisory, until 4 PM EDT this afternoon. For the second Small Craft Advisory, from 10 AM Wednesday to 8 PM EDT Thursday. * 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 October 6 at 3:08PM EDT until October 6 at 4:00PM EDT by NWS Marquette MI

Effective: Tue October 6, 2026, 3:08 PM
Expires: Wed October 7, 2026, 3:15 AM

* WHAT...For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 25 kt and waves 1 to 3 ft occurring. For the second Small Craft Advisory, west winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. * WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the first Small Craft Advisory, until 4 PM EDT this afternoon. For the second Small Craft Advisory, from 10 AM Wednesday to 8 PM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Tuesday, October 6, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 55.4°F
Average Humidity: 72%
Chance of Rain: 32%
Wind: 21.5 mph
UV Index: 3.1

Air Quality

AQI: 1 - Good
PM2.5: 3 μg/m3
PM10: 3.34 μg/m3
Carbon Monoxide: 120.63 μg/m3
Nitrogen Dioxide: 1.44 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 76.67 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 1:34 PM
Sunset: 7:15 PM
Daylight: 11 hrs 23 mins
Moonrise: 2:59 AM
Moon Transit: 10:26 AM
Moonset: 5:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

5:07 PM - 6:37 PM
2:29 AM - 3:59 AM

Action Rating: 2 out of 5

Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 55°F
Average Humidity: 78%
Chance of Rain: 42%
Wind: 21.3 mph
UV Index: 1.9

Air Quality

AQI: 1 - Good
PM2.5: 1.35 μg/m3
PM10: 1.42 μg/m3
Carbon Monoxide: 111.04 μg/m3
Nitrogen Dioxide: 0.67 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 73.17 μg/m3

Astronomical

Sunrise: 7:54 AM
Sun Transit: 1:34 PM
Sunset: 7:13 PM
Daylight: 11 hrs 19 mins
Moonrise: 4:18 AM
Moon Transit: 11:15 AM
Moonset: 5:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:45 AM - 1:15 PM

Minor Periods

5:26 PM - 6:56 PM
3:48 AM - 5:18 AM

Action Rating: 3 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 51.6°F
Average Humidity: 67%
Chance of Rain: 36%
Wind: 25.1 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 0.66 μg/m3
PM10: 0.83 μg/m3
Carbon Monoxide: 107.13 μg/m3
Nitrogen Dioxide: 0.55 μg/m3
Sulphur Dioxide: 0.51 μg/m3
Ozone: 67.71 μg/m3

Astronomical

Sunrise: 7:55 AM
Sun Transit: 1:33 PM
Sunset: 7:11 PM
Daylight: 11 hrs 16 mins
Moonrise: 5:34 AM
Moon Transit: 12:00 AM
Moonset: 6:12 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:30 AM - 2:00 PM

Minor Periods

5:42 PM - 7:12 PM
5:04 AM - 6:34 AM

Action Rating: 3 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 52.1°F
Average Humidity: 69%
Chance of Rain: 15%
Wind: 15 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 4.32 μg/m3
PM10: 5.98 μg/m3
Carbon Monoxide: 115.7 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.71 μg/m3
Ozone: 74.63 μg/m3

Astronomical

Sunrise: 7:57 AM
Sun Transit: 1:33 PM
Sunset: 7:09 PM
Daylight: 11 hrs 13 mins
Moonrise: 6:50 AM
Moon Transit: 12:45 AM
Moonset: 6:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
12:15 AM - 2:45 PM

Minor Periods

5:59 PM - 7:29 PM
6:20 AM - 7:50 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 62.5°F
Average Humidity: 71%
Chance of Rain: 11%
Wind: 23.9 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 5.87 μg/m3
PM10: 7.38 μg/m3
Carbon Monoxide: 153.78 μg/m3
Nitrogen Dioxide: 0.6 μg/m3
Sulphur Dioxide: 0.86 μg/m3
Ozone: 85.78 μg/m3

Astronomical

Sunrise: 7:58 AM
Sun Transit: 1:33 PM
Sunset: 7:08 PM
Daylight: 11 hrs 9 mins
Moonrise: 8:03 AM
Moon Transit: 1:30 PM
Moonset: 6:46 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
1:00 PM - 3:30 PM

Minor Periods

6:16 PM - 7:46 PM
7:33 AM - 9:03 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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