Water Temperature of Lake Superior Near Isle Royale, MI

Current Water Temperature

42.3°F

Measurement Time: Tuesday, November 7, 2023, 12:56 AM EST

Temperature Locations

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Local Points of Interest

Isle Royale National Park; Blake Point

Lake Superior

Station Name: Isle of Royale East, MI (230)
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 587 feet

Nearest Address:
Offshore
Isle Royale, MI

GPS Coordinates: 48.034, -87.73

Nearby Water Temperatures

Lake Superior, Terrace Bay Township, ON (50.1 mi)
Lake Superior, Copper Harbor, MI (61.5 mi)
Washington Creek, Windigo, MI (65.9 mi)
Lake Superior, Calumet, MI (66.7 mi)
Pilgrim River, Houghton, MI (76 mi)
Keweenaw Bay, Jacobsville, MI (79.9 mi)
East Branch Salmon Trout River, Powell, MI (86.4 mi)
Salmon Trout River, Champion, MI (86.8 mi)
Grand Portage River, Grand Portage, MN (90.4 mi)
Falls River, L'Anse, MI (95.8 mi)
Sturgeon River, Pelkie, MI (100.4 mi)
Lake Superior, Marquette, MI (104.1 mi)
Middle Branch Escanaba River, , MI (106.3 mi)
Middle Branch Escanaba River, Humboldt, MI (106.6 mi)
Lake Superior, Lake Superior, MI (107.4 mi)

Weather Near Isle Royale, Michigan

Current Weather

66.6°F
Overcast
Overcast
66.6°F
56.8°F
83%
NNW 12.1 mph
25.4 mph
54.1°F
52.8°F
0 in
100%
1 mi
1010 mbar
0

Five Day Weather Forecast

Smoky haze
Sat
H: 66°F
L: 54°F
Sunny
Sun
H: 67°F
L: 54°F
Sunny
Mon
H: 70°F
L: 57°F
Patchy rain nearby
Tue
H: 65°F
L: 52°F
Smoky haze
Wed
H: 61°F
L: 53°F

Air Quality

AQI: 2 - Moderate
PM2.5: 62.6 μg/m3
PM10: 62.9 μg/m3
Carbon Monoxide: 689 μg/m3
Nitrogen Dioxide: 3.8 μg/m3
Sulphur Dioxide: 4.5 μg/m3
Ozone: 121 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:57 PM
Sunset: 9:43 PM
Daylight: 15 hrs 33 mins
Moonrise: 11:30 AM
Moon Transit: 5:45 PM
Moonset: 12:31 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

5:12 AM - 7:42 AM
5:15 PM - 7:45 PM

Minor Periods

11:00 AM - 12:30 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Dense Smoke Advisory issued July 18 at 1:12AM CDT until July 18 at 5:00AM CDT by NWS Duluth MN

Effective: Sat July 18, 2026, 2:12 AM
Expires: Sat July 18, 2026, 6:00 AM

* WHAT...Dense smoke will reduce visibility to less than 1 NM. * WHERE...Grand Portage to Grand Marais MN, Grand Marais to Taconite Harbor MN and Taconite Harbor to Silver Bay Harbor MN. * WHEN...Until 5 AM CDT early 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.
Saturday, July 18, 2026

Weather Forecast

Smoky haze
66°F
54.3°F
59.6°F
83%
0 in
13%
0%
13 mph
1.9


Air Quality

AQI: 4 - Unhealthy
PM2.5: 72.17 μg/m3
PM10: 72.8 μg/m3
Carbon Monoxide: 676.29 μg/m3
Nitrogen Dioxide: 2.34 μg/m3
Sulphur Dioxide: 2.95 μg/m3
Ozone: 146.92 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:57 PM
Sunset: 9:43 PM
Daylight: 15 hrs 33 mins
Moonrise: 11:30 AM
Moon Transit: 5:45 PM
Moonset: 12:31 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

5:12 AM - 7:42 AM
5:15 PM - 7:45 PM

Minor Periods

11:00 AM - 12:30 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
66.9°F
54.1°F
59.9°F
81%
0 in
11%
0%
8.7 mph
5.8


Air Quality

AQI: 2 - Moderate
PM2.5: 26.14 μg/m3
PM10: 26.43 μg/m3
Carbon Monoxide: 476.29 μg/m3
Nitrogen Dioxide: 0.54 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 134.25 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:57 PM
Sunset: 9:42 PM
Daylight: 15 hrs 31 mins
Moonrise: 12:45 AM
Moon Transit: 6:29 PM
Moonset: 12:47 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

5:56 AM - 8:26 AM
5:59 PM - 8:29 PM

Minor Periods

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

Action Rating: 3 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
70.3°F
56.9°F
62.2°F
83%
0.12 in
67%
0%
25.9 mph
5.5


Air Quality

AQI: 2 - Moderate
PM2.5: 16.91 μg/m3
PM10: 17.23 μg/m3
Carbon Monoxide: 240.5 μg/m3
Nitrogen Dioxide: 1.42 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 117.46 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:57 PM
Sunset: 9:41 PM
Daylight: 15 hrs 29 mins
Moonrise: 1:56 PM
Moon Transit: 7:13 PM
Moonset: 12:02 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

6:40 AM - 9:10 AM
6:43 PM - 9:13 PM

Minor Periods

1:26 PM - 2:56 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, July 21, 2026

Weather Forecast

Patchy rain nearby
64.8°F
51.6°F
55.8°F
79%
0.07 in
67%
0%
23 mph
4.2


Air Quality

AQI: 2 - Moderate
PM2.5: 39.95 μg/m3
PM10: 40.71 μg/m3
Carbon Monoxide: 773.02 μg/m3
Nitrogen Dioxide: 13.31 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 91.33 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 1:57 PM
Sunset: 9:40 PM
Daylight: 15 hrs 26 mins
Moonrise: 3:08 PM
Moon Transit: 7:57 PM
Moonset: 12:18 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

7:23 AM - 9:53 AM
7:27 PM - 9:57 PM

Minor Periods

2:38 PM - 4:08 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, July 22, 2026

Weather Forecast

Smoky haze
60.8°F
52.6°F
57°F
67%
0 in
7%
0%
27.5 mph
5


Air Quality

AQI: 2 - Moderate
PM2.5: 39.74 μg/m3
PM10: 40.7 μg/m3
Carbon Monoxide: 665.56 μg/m3
Nitrogen Dioxide: 6.29 μg/m3
Sulphur Dioxide: 2.8 μg/m3
Ozone: 72.33 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 1:57 PM
Sunset: 9:39 PM
Daylight: 15 hrs 24 mins
Moonrise: 4:19 PM
Moon Transit: 8:42 PM
Moonset: 12:37 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

8:08 AM - 10:38 AM
8:12 PM - 10:42 PM

Minor Periods

3:49 PM - 5:19 PM
12:07 AM - 1:37 AM

Action Rating: 2 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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