Water Temperature of Lake Ontario in Grimsby, Ontario

Current Water Temperature

19.2°C

Measurement Time: Monday, October 6, 2025, 3:00 AM EDT

Temperature Locations

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Local Points of Interest

Hamilton, ON; Toronto, ON

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Lake Ontario

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

Elevation Above Sea Level: 240 feet / 73 meters

Nearest Address:
Grimsby, ON
Niagara Regional District County

GPS Coordinates: 43.25, -79.53

Nearby Water Temperatures

Eighteenmile Creek, Burt, NY (41.2 mi)
Buffalo River, Buffalo, NY (41.3 mi)
Erie Canal, Lockport, NY (42.7 mi)
Oak Orchard Creek, Medina, NY (57.8 mi)
Oak Orchard Creek, Kenyonville, NY (61.4 mi)
Cattaraugus Creek, Gowanda, NY (62.2 mi)
Johnson Creek, Kuckville, NY (64.1 mi)
Oak Orchard Creek, Kent, NY (67.6 mi)
Sandy Creek, North Hamlin, NY (81.4 mi)
Allegheny River, Salamanca, NY (86.2 mi)
Walnut Creek, Erie, PA (88.8 mi)
Northrup Creek, North Greece, NY (90.0 mi)
Erie Canal, Rochester, NY (95.1 mi)
Genesee River, Rochester, NY (96.7 mi)
Allen Creek, Brighton, NY (101.2 mi)

Weather for Grimsby, Ontario

Current Weather

18.3°C
Clear
Conditions: Clear
Humidity: 80%
Feels Like: 18.3°C
Wind: SW 12.3 mph
Wind Gusts: 21.9 mph
Pressure: 29.59 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Mon
H: 30°C
L: 17°C
Heavy rain
Tue
H: 22°C
L: 13°C
Partly Cloudy
Wed
H: 17°C
L: 10°C
Sunny
Thu
H: 12°C
L: 8°C
Sunny
Fri
H: 16°C
L: 9°C

Air Quality

AQI: 1 - Good
PM2.5: 8.55 μg/m3
PM10: 8.55 μg/m3
Carbon Monoxide: 228.85 μg/m3
Nitrogen Dioxide: 12.65 μg/m3
Sulphur Dioxide: 8.15 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 1:06 PM
Sunset: 6:50 PM
Daylight: 11 hrs 29 mins
Moonrise: 6:29 PM
Moon Transit: 1:38 AM
Moonset: 6:37 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

1:08 AM - 3:38 AM
1:08 AM - 3:38 AM

Minor Periods

5:59 PM - 7:29 PM
6:07 AM - 7:37 AM

Action Rating: 4 out of 5

Monday, October 6, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 21.9°C
Average Humidity: 64%
Chance of Rain: 0%
Wind: 17.2 mph
UV Index: 1

Air Quality

AQI: 1 - Good
PM2.5: 12.11 μg/m3
PM10: 12.2 μg/m3
Carbon Monoxide: 213.97 μg/m3
Nitrogen Dioxide: 14.02 μg/m3
Sulphur Dioxide: 8.65 μg/m3
Ozone: 97.44 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 1:06 PM
Sunset: 6:50 PM
Daylight: 11 hrs 29 mins
Moonrise: 6:29 PM
Moon Transit: 1:38 AM
Moonset: 6:37 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

1:08 AM - 3:38 AM
1:08 AM - 3:38 AM

Minor Periods

5:59 PM - 7:29 PM
6:07 AM - 7:37 AM

Action Rating: 4 out of 5

Tuesday, October 7, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 18.9°C
Average Humidity: 84%
Chance of Rain: 89%
Wind: 17.9 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 5.93 μg/m3
PM10: 6.12 μg/m3
Carbon Monoxide: 184.73 μg/m3
Nitrogen Dioxide: 12.61 μg/m3
Sulphur Dioxide: 4.21 μg/m3
Ozone: 72.28 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 1:05 PM
Sunset: 6:48 PM
Daylight: 11 hrs 26 mins
Moonrise: 6:53 PM
Moon Transit: 1:04 AM
Moonset: 7:57 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:34 AM - 3:04 AM
2:27 PM - 4:57 PM

Minor Periods

6:23 PM - 7:53 PM
7:27 AM - 8:57 AM

Action Rating: 5 out of 5

Wednesday, October 8, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 13.6°C
Average Humidity: 66%
Chance of Rain: 0%
Wind: 16.1 mph
UV Index: 0.9

Air Quality

AQI: 1 - Good
PM2.5: 3.21 μg/m3
PM10: 3.26 μg/m3
Carbon Monoxide: 226.29 μg/m3
Nitrogen Dioxide: 9.39 μg/m3
Sulphur Dioxide: 4.53 μg/m3
Ozone: 67.76 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 1:05 PM
Sunset: 6:47 PM
Daylight: 11 hrs 23 mins
Moonrise: 7:21 PM
Moon Transit: 1:57 AM
Moonset: 9:19 AM
Moon Phase: Full
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
3:22 PM - 5:52 PM

Minor Periods

6:51 PM - 8:21 PM
8:49 AM - 10:19 AM

Action Rating: 4 out of 5

Thursday, October 9, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 10.2°C
Average Humidity: 56%
Chance of Rain: 0%
Wind: 13.9 mph
UV Index: 0.9

Air Quality

AQI: 1 - Good
PM2.5: 2.82 μg/m3
PM10: 2.84 μg/m3
Carbon Monoxide: 243.01 μg/m3
Nitrogen Dioxide: 9.44 μg/m3
Sulphur Dioxide: 3.89 μg/m3
Ozone: 59.84 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 1:05 PM
Sunset: 6:45 PM
Daylight: 11 hrs 20 mins
Moonrise: 7:57 PM
Moon Transit: 2:54 AM
Moonset: 10:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

2:24 AM - 4:54 AM
4:21 PM - 6:51 PM

Minor Periods

7:27 PM - 8:57 PM
10:14 AM - 11:44 AM

Action Rating: 3 out of 5

Friday, October 10, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 11.9°C
Average Humidity: 54%
Chance of Rain: 0%
Wind: 7.8 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 4.22 μg/m3
PM10: 4.24 μg/m3
Carbon Monoxide: 245.23 μg/m3
Nitrogen Dioxide: 11.72 μg/m3
Sulphur Dioxide: 3.04 μg/m3
Ozone: 54.69 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 1:05 PM
Sunset: 6:43 PM
Daylight: 11 hrs 17 mins
Moonrise: 8:42 PM
Moon Transit: 3:55 AM
Moonset: 12:06 AM
Moon Phase: Waning Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

3:25 AM - 5:55 AM
5:24 PM - 7:54 PM

Minor Periods

8:12 PM - 9:42 PM
11:36 AM - 1:06 PM

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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