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

11°C

Conditions: Mist

Feels Like: 9.8°C

Heat Index: 11.1°C

Humidity: 100%

Wind: NNW 10.1 kph

Wind Gusts: 18.4 kph

Wind Chill: 10°C

Dew Point: 11°C

Precipitation: 0.01 mm

Cloud Cover: 100%

Visibility: 3.2 km

Air Pressure: 1015 mbar

UV Index: 0.2

Five Day Weather Forecast

Fri
H: 16°C
L: 8°C

Sat
H: 21°C
L: 6°C

Sun
H: 6°C
L: -0°C

Mon
H: 6°C
L: -2°C

Tue
H: 13°C
L: 2°C

Air Quality

AQI: 1 - Good

PM2.5: 19.95 μg/m3

PM10: 20.05 μg/m3

Carbon Monoxide: 504.85 μg/m3
Nitrogen Dioxide: 31.95 μg/m3
Sulphur Dioxide: 13.95 μg/m3
Ozone: 41 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:17 PM
Sunset: 8:04 PM
Daylight: 13 hrs 31 mins

Moonrise: 6:16 AM
Moon Transit: 1:23 PM
Moonset: 8:48 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
12:53 AM - 3:23 PM

Minor Periods

8:18 PM - 9:48 PM
5:46 AM - 7:16 AM

Action Rating: 4 out of 5

Friday, April 17, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 15.6°C

Low Temperature: 7.8°C

Average Temperature: 12.3°C

Average Humidity: 96%

Precipitation: 0.36 mm

Chance of Rain: 89%

Chance of Snow: 0%

Maximum Wind: 11.2 kph

UV Index: 1.4

Air Quality

AQI: 2 - Moderate

PM2.5: 18.96 μg/m3

PM10: 19.31 μg/m3

Carbon Monoxide: 403.81 μg/m3
Nitrogen Dioxide: 35.64 μg/m3
Sulphur Dioxide: 9.3 μg/m3
Ozone: 34.64 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:17 PM
Sunset: 8:04 PM
Daylight: 13 hrs 31 mins

Moonrise: 6:16 AM
Moon Transit: 1:23 PM
Moonset: 8:48 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
12:53 AM - 3:23 PM

Minor Periods

8:18 PM - 9:48 PM
5:46 AM - 7:16 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Conditions: Moderate rain

High Temperature: 20.9°C

Low Temperature: 5.7°C

Average Temperature: 13.2°C

Average Humidity: 88%

Precipitation: 12.4 mm

Chance of Rain: 85%

Chance of Snow: 0%

Maximum Wind: 38.9 kph

UV Index: 0.7

Air Quality

AQI: 1 - Good

PM2.5: 14.82 μg/m3

PM10: 15.19 μg/m3

Carbon Monoxide: 305.45 μg/m3
Nitrogen Dioxide: 20.85 μg/m3
Sulphur Dioxide: 5.34 μg/m3
Ozone: 58.88 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:17 PM
Sunset: 8:05 PM
Daylight: 13 hrs 34 mins

Moonrise: 6:45 AM
Moon Transit: 2:20 PM
Moonset: 10:11 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
1:50 PM - 4:20 PM

Minor Periods

9:41 PM - 11:11 PM
6:15 AM - 7:45 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Conditions: Heavy rain

High Temperature: 6°C

Low Temperature: -0.3°C

Average Temperature: 2.8°C

Average Humidity: 64%

Precipitation: 26.11 mm

Chance of Rain: 87%

Chance of Snow: 3%

Maximum Wind: 32.4 kph

UV Index: 1.3

Air Quality

AQI: 1 - Good

PM2.5: 2.95 μg/m3

PM10: 3.21 μg/m3

Carbon Monoxide: 222.09 μg/m3
Nitrogen Dioxide: 6.78 μg/m3
Sulphur Dioxide: 2.59 μg/m3
Ozone: 79.28 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:17 PM
Sunset: 8:06 PM
Daylight: 13 hrs 36 mins

Moonrise: 7:21 AM
Moon Transit: 3:21 PM
Moonset: 11:33 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

3:47 AM - 6:17 AM
2:51 PM - 5:21 PM

Minor Periods

12:00 AM - 12:00 AM
6:51 AM - 8:21 AM

Action Rating: 4 out of 5

Monday, April 20, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 6°C

Low Temperature: -1.9°C

Average Temperature: 2°C

Average Humidity: 49%

Precipitation: 0 mm

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 27.4 kph

UV Index: 1.3

Air Quality

AQI: 1 - Good

PM2.5: 3.23 μg/m3

PM10: 3.52 μg/m3

Carbon Monoxide: 205.81 μg/m3
Nitrogen Dioxide: 4.8 μg/m3
Sulphur Dioxide: 2.52 μg/m3
Ozone: 86.24 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:17 PM
Sunset: 8:07 PM
Daylight: 13 hrs 39 mins

Moonrise: 8:09 AM
Moon Transit: 4:25 PM
Moonset: 12:33 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

4:50 AM - 7:20 AM
3:55 PM - 6:25 PM

Minor Periods

7:39 AM - 9:09 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 13.2°C

Low Temperature: 1.6°C

Average Temperature: 6.1°C

Average Humidity: 66%

Precipitation: 0.99 mm

Chance of Rain: 88%

Chance of Snow: 0%

Maximum Wind: 42.8 kph

UV Index: 0

Air Quality

AQI: 1 - Good

PM2.5: 6.69 μg/m3

PM10: 6.92 μg/m3

Carbon Monoxide: 242.89 μg/m3
Nitrogen Dioxide: 14.67 μg/m3
Sulphur Dioxide: 3.77 μg/m3
Ozone: 61.54 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:16 PM
Sunset: 8:08 PM
Daylight: 13 hrs 42 mins

Moonrise: 9:08 AM
Moon Transit: 5:30 PM
Moonset: 12:47 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

5:55 AM - 8:25 AM
5:00 PM - 7:30 PM

Minor Periods

8:38 AM - 10:08 AM
12:17 AM - 1:47 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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Water Temperature of Lake Ontario in Grimsby, Ontario

Current Water Temperature

Temperature Locations

Local Points of Interest

Nearby Water Temperatures

Weather for Grimsby, Ontario

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

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