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

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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

5.5°C
Patchy rain nearby
Conditions: Patchy rain nearby
Humidity: 58%
Feels Like: -0.2°C
Wind: SW 25.9 mph
Wind Gusts: 39.5 mph
Pressure: 29.77 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Partly Cloudy
Sat
H: 5°C
L: -7°C
Partly Cloudy
Sun
H: -2°C
L: -6°C
Partly Cloudy
Mon
H: 1°C
L: -6°C
Overcast
Tue
H: 2°C
L: -0°C
Patchy rain nearby
Wed
H: 2°C
L: 1°C

Air Quality

AQI: 1 - Good
PM2.5: 4.85 μg/m3
PM10: 5.55 μg/m3
Carbon Monoxide: 182.85 μg/m3
Nitrogen Dioxide: 9.35 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:15 AM
Sunset: 4:45 PM
Daylight: 8 hrs 59 mins
Moonrise: 8:42 AM
Moon Transit: 12:49 AM
Moonset: 4:59 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:19 AM - 3:49 AM
12:19 AM - 2:49 PM

Minor Periods

4:29 PM - 5:59 PM
8:12 AM - 9:42 AM

Action Rating: 5 out of 5

Wind Advisory issued December 20 at 12:21PM EST until December 21 at 4:00AM EST by NWS Buffalo NY

Effective: Sat December 20, 2025, 12:21 PM
Expires: Sun December 21, 2025, 4:00 AM

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Niagara and Northern Erie Counties. * WHEN...From 7 PM this evening to 4 AM EST Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.


Wind Advisory issued December 20 at 12:21PM EST until December 21 at 4:00AM EST by NWS Buffalo NY

Effective: Sat December 20, 2025, 12:21 PM
Expires: Sun December 21, 2025, 4:00 AM

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Chautauqua and Southern Erie Counties. * WHEN...From 5 PM this afternoon to 4 AM EST Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.
Saturday, December 20, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: -1.4°C
Average Humidity: 75%
Chance of Rain: 0%
Wind: 28.2 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.32 μg/m3
PM10: 3.46 μg/m3
Carbon Monoxide: 181.57 μg/m3
Nitrogen Dioxide: 8.54 μg/m3
Sulphur Dioxide: 4.06 μg/m3
Ozone: 66.64 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:15 AM
Sunset: 4:45 PM
Daylight: 8 hrs 59 mins
Moonrise: 8:42 AM
Moon Transit: 12:49 AM
Moonset: 4:59 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:19 AM - 3:49 AM
12:19 AM - 2:49 PM

Minor Periods

4:29 PM - 5:59 PM
8:12 AM - 9:42 AM

Action Rating: 5 out of 5

Sunday, December 21, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: -2.8°C
Average Humidity: 68%
Chance of Rain: 0%
Wind: 28 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.63 μg/m3
PM10: 3.79 μg/m3
Carbon Monoxide: 180.81 μg/m3
Nitrogen Dioxide: 8.58 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 64.48 μg/m3

Astronomical

Sunrise: 7:47 AM
Sun Transit: 12:16 AM
Sunset: 4:46 PM
Daylight: 8 hrs 59 mins
Moonrise: 9:25 AM
Moon Transit: 1:41 PM
Moonset: 6:02 PM
Moon Phase: New
Moon Illumination: 1.5%

Best Times for Fishing or Hunting

Major Periods

2:12 AM - 4:42 AM
1:11 PM - 3:41 PM

Minor Periods

5:32 PM - 7:02 PM
8:55 AM - 10:25 AM

Action Rating: 3 out of 5

Monday, December 22, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: -2.6°C
Average Humidity: 76%
Chance of Rain: 0%
Wind: 13.9 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 5.09 μg/m3
PM10: 5.43 μg/m3
Carbon Monoxide: 195.73 μg/m3
Nitrogen Dioxide: 10.98 μg/m3
Sulphur Dioxide: 3.38 μg/m3
Ozone: 60.72 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:16 AM
Sunset: 4:46 PM
Daylight: 8 hrs 59 mins
Moonrise: 10:00 AM
Moon Transit: 2:31 PM
Moonset: 7:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%

Best Times for Fishing or Hunting

Major Periods

3:03 AM - 5:33 AM
2:01 PM - 4:31 PM

Minor Periods

6:39 PM - 8:09 PM
9:30 AM - 11:00 AM

Action Rating: 3 out of 5

Tuesday, December 23, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 1.3°C
Average Humidity: 93%
Chance of Rain: 0%
Wind: 17.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 10.99 μg/m3
PM10: 11.71 μg/m3
Carbon Monoxide: 215.72 μg/m3
Nitrogen Dioxide: 16.46 μg/m3
Sulphur Dioxide: 5.66 μg/m3
Ozone: 45.4 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:17 AM
Sunset: 4:47 PM
Daylight: 8 hrs 59 mins
Moonrise: 10:29 AM
Moon Transit: 3:19 PM
Moonset: 8:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.7%

Best Times for Fishing or Hunting

Major Periods

3:52 AM - 6:22 AM
2:49 PM - 5:19 PM

Minor Periods

7:49 PM - 9:19 PM
9:59 AM - 11:29 AM

Action Rating: 2 out of 5

Wednesday, December 24, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 1.4°C
Average Humidity: 85%
Chance of Rain: 89%
Wind: 17 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 10.31 μg/m3
PM10: 10.5 μg/m3
Carbon Monoxide: 226 μg/m3
Nitrogen Dioxide: 11.43 μg/m3
Sulphur Dioxide: 3.13 μg/m3
Ozone: 45.85 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:17 AM
Sunset: 4:48 PM
Daylight: 8 hrs 59 mins
Moonrise: 10:53 AM
Moon Transit: 4:05 PM
Moonset: 9:27 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.9%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
3:35 PM - 6:05 PM

Minor Periods

8:57 PM - 10:27 PM
10:23 AM - 11:53 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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