Water Temperature of Lake Ontario in Grimsby, Ontario

Current Water Temperature

-0.9°C

Measurement Time: Friday, December 5, 2025, 1:00 PM EST

Temperature Locations

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Local Points of Interest

Hamilton, ON; Toronto, ON

Lake Ontario

Station Name: West Lake Ontario - Grimsby
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 73 meters

Nearest Address:
Grimsby, ON
Niagara Regional District County

GPS Coordinates: 43.25, -79.53

Nearby Water Temperatures

Eighteenmile Creek, Burt, NY (66.3 km)
Buffalo River, Buffalo, NY (66.4 km)
Erie Canal, Lockport, NY (68.7 km)
Oak Orchard Creek, Medina, NY (93.1 km)
Oak Orchard Creek, Kenyonville, NY (98.9 km)
Cattaraugus Creek, Gowanda, NY (100.0 km)
Johnson Creek, Kuckville, NY (103.1 km)
Oak Orchard Creek, Kent, NY (108.8 km)
Sandy Creek, North Hamlin, NY (131.1 km)
Allegheny River, Salamanca, NY (138.7 km)
Walnut Creek, Erie, PA (142.9 km)
Northrup Creek, North Greece, NY (144.8 km)
Erie Canal, Rochester, NY (153.0 km)
Genesee River, Rochester, NY (155.6 km)
Allen Creek, Brighton, NY (162.9 km)

Weather for Grimsby, Ontario

Current Weather

-3.7°C
Freezing fog
Freezing fog
-6.3°C
-2.7°C
91%
S 6.1 kph
11.3 kph
-6.7°C
-2.1°C
0 mm
0%
10 km
1020 mbar
0

Five Day Weather Forecast

Mist
Sun
H: -1°C
L: -4°C
Overcast
Mon
H: 2°C
L: -2°C
Cloudy
Tue
H: 3°C
L: -0°C
Moderate or heavy freezing rain
Wed
H: 3°C
L: -2°C
Heavy snow
Thu
H: -1°C
L: -4°C

Air Quality

PM2.5: 7.15 μg/m3
PM10: 7.15 μg/m3
Carbon Monoxide: 388.85 μg/m3
Nitrogen Dioxide: 41.55 μg/m3
Sulphur Dioxide: 6.75 μg/m3
Ozone: 18 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:32 AM
Sunset: 5:49 PM
Daylight: 10 hrs 33 mins
Moonrise: 6:33 AM
Moon Transit: 11:08 AM
Moonset: 3:52 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:38 AM - 1:08 PM

Minor Periods

3:22 PM - 4:52 PM
6:03 AM - 7:33 AM

Action Rating: 3 out of 5

Sunday, February 15, 2026

Weather Forecast

Mist
-0.7°C
-4.3°C
-2.1°C
97%
0.08 mm
0%
0%
10.1 kph
0.3


Air Quality

AQI: 2 - Moderate
PM2.5: 15.84 μg/m3
PM10: 15.99 μg/m3
Carbon Monoxide: 518.53 μg/m3
Nitrogen Dioxide: 33.89 μg/m3
Sulphur Dioxide: 7.47 μg/m3
Ozone: 32.24 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:32 AM
Sunset: 5:49 PM
Daylight: 10 hrs 33 mins
Moonrise: 6:33 AM
Moon Transit: 11:08 AM
Moonset: 3:52 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:38 AM - 1:08 PM

Minor Periods

3:22 PM - 4:52 PM
6:03 AM - 7:33 AM

Action Rating: 3 out of 5

Monday, February 16, 2026

Weather Forecast

Overcast
1.6°C
-1.5°C
0.5°C
97%
0 mm
0%
0%
27.4 kph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 13.37 μg/m3
PM10: 13.53 μg/m3
Carbon Monoxide: 357.33 μg/m3
Nitrogen Dioxide: 37.17 μg/m3
Sulphur Dioxide: 9.77 μg/m3
Ozone: 28.16 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:32 AM
Sunset: 5:50 PM
Daylight: 10 hrs 36 mins
Moonrise: 7:00 AM
Moon Transit: 11:57 AM
Moonset: 5:04 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

12:30 AM - 3:00 AM
11:27 AM - 1:57 PM

Minor Periods

4:34 PM - 6:04 PM
6:30 AM - 8:00 AM

Action Rating: 4 out of 5

Tuesday, February 17, 2026

Weather Forecast

Cloudy
3.2°C
-0.1°C
1.8°C
92%
0.09 mm
0%
4%
24.1 kph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 21.47 μg/m3
PM10: 21.97 μg/m3
Carbon Monoxide: 254.41 μg/m3
Nitrogen Dioxide: 28.85 μg/m3
Sulphur Dioxide: 7.9 μg/m3
Ozone: 40.08 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:32 AM
Sunset: 5:52 PM
Daylight: 10 hrs 39 mins
Moonrise: 7:23 AM
Moon Transit: 12:44 AM
Moonset: 6:15 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:17 AM - 3:47 AM
12:14 AM - 2:44 PM

Minor Periods

5:45 PM - 7:15 PM
6:53 AM - 8:23 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Moderate or heavy freezing rain
3.3°C
-1.5°C
0.4°C
93%
16.84 mm
81%
31%
43.9 kph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 15.73 μg/m3
PM10: 16.23 μg/m3
Carbon Monoxide: 321.29 μg/m3
Nitrogen Dioxide: 46.47 μg/m3
Sulphur Dioxide: 10.34 μg/m3
Ozone: 39 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:32 AM
Sunset: 5:53 PM
Daylight: 10 hrs 42 mins
Moonrise: 7:45 AM
Moon Transit: 1:29 PM
Moonset: 7:27 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

2:03 AM - 4:33 AM
12:59 AM - 3:29 PM

Minor Periods

6:57 PM - 8:27 PM
7:15 AM - 8:45 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Heavy snow
-1.1°C
-4°C
-1.2°C
87%
1.16 mm
72%
42%
29.9 kph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:31 AM
Sunset: 5:54 PM
Daylight: 10 hrs 45 mins
Moonrise: 8:05 AM
Moon Transit: 4:07 PM
Moonset: 8:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

3:37 PM - 6:07 PM
3:37 PM - 6:07 PM

Minor Periods

8:10 PM - 9:40 PM
7:35 AM - 9:05 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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