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

16.2°C
Partly cloudy
Partly cloudy
16.2°C
17.5°C
39%
SW 38.5 kph
63.6 kph
17.2°C
0.9°C
0 mm
75%
24 km
1010 mbar
3.8

Five Day Weather Forecast

Sunny
Mon
H: 21°C
L: 7°C
Moderate rain
Tue
H: 15°C
L: 5°C
Heavy rain
Wed
H: 18°C
L: 3°C
Overcast
Thu
H: 2°C
L: -2°C
Blizzard
Fri
H: 3°C
L: -3°C

Air Quality

AQI: 1 - Good
PM2.5: 6.35 μg/m3
PM10: 6.55 μg/m3
Carbon Monoxide: 204.85 μg/m3
Nitrogen Dioxide: 8.75 μg/m3
Sulphur Dioxide: 5.95 μg/m3
Ozone: 82 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 1:28 PM
Sunset: 7:17 PM
Daylight: 11 hrs 37 mins
Moonrise: 1:14 AM
Moon Transit: 5:43 AM
Moonset: 10:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

5:13 AM - 7:43 AM
7:04 PM - 9:34 PM

Minor Periods

9:37 AM - 11:07 AM
12:44 AM - 2:14 AM

Action Rating: 4 out of 5

Flood Warning issued March 9 at 5:14AM EDT until March 10 at 8:00AM EDT by NWS Buffalo NY

Effective: Mon March 9, 2026, 5:14 AM
Expires: Mon March 9, 2026, 6:00 PM

...The Flood Warning continues for the following rivers in New York... Tonawanda Creek At Rapids affecting Niagara and Erie Counties. For the Tonawanda Creek...including Rapids...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Tonawanda Creek at Rapids. * WHEN...From this evening to Tuesday morning. * IMPACTS...At 12.0 feet, Flood stage, lowland flooding of farm areas along Tonawanda Creek between Rapids and the Tonawanda Indian Reservation. Flooding may impact Fletcher, Burdick, Kelkenberg, and Tonawanda Creek Roads. * ADDITIONAL DETAILS... - At 4:00 AM EDT Monday the stage was 9.2 feet. - Bankfull stage is 10.0 feet. - Forecast...The river is expected to rise above flood stage this evening to a crest of 12.1 feet this evening. It will then fall below flood stage just after midnight tonight. - Flood stage is 12.0 feet. - Flood History...No available flood history. - http://www.weather.gov/safety/flood

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued this evening by 600 PM EDT.
Monday, March 9, 2026

Weather Forecast

Sunny
20.7°C
6.5°C
12.9°C
40%
0 mm
0%
0%
38.5 kph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 5.39 μg/m3
PM10: 5.74 μg/m3
Carbon Monoxide: 203.65 μg/m3
Nitrogen Dioxide: 9.63 μg/m3
Sulphur Dioxide: 4.72 μg/m3
Ozone: 73.16 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 1:28 PM
Sunset: 7:17 PM
Daylight: 11 hrs 37 mins
Moonrise: 1:14 AM
Moon Transit: 5:43 AM
Moonset: 10:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

5:13 AM - 7:43 AM
7:04 PM - 9:34 PM

Minor Periods

9:37 AM - 11:07 AM
12:44 AM - 2:14 AM

Action Rating: 4 out of 5

Tuesday, March 10, 2026

Weather Forecast

Moderate rain
15.4°C
5.1°C
10°C
92%
9.38 mm
86%
0%
22.7 kph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 15.76 μg/m3
PM10: 15.97 μg/m3
Carbon Monoxide: 394.77 μg/m3
Nitrogen Dioxide: 30.96 μg/m3
Sulphur Dioxide: 8.41 μg/m3
Ozone: 42.48 μg/m3

Astronomical

Sunrise: 7:39 AM
Sun Transit: 1:28 PM
Sunset: 7:18 PM
Daylight: 11 hrs 40 mins
Moonrise: 2:19 AM
Moon Transit: 6:32 AM
Moonset: 10:44 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
7:55 PM - 10:25 PM

Minor Periods

10:14 AM - 11:44 AM
1:49 AM - 3:19 AM

Action Rating: 2 out of 5

Wednesday, March 11, 2026

Weather Forecast

Heavy rain
18.1°C
2.9°C
8.3°C
95%
79.46 mm
88%
0%
43.6 kph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 9.78 μg/m3
PM10: 9.97 μg/m3
Carbon Monoxide: 276.89 μg/m3
Nitrogen Dioxide: 11.79 μg/m3
Sulphur Dioxide: 3.42 μg/m3
Ozone: 55.36 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 1:28 PM
Sunset: 7:20 PM
Daylight: 11 hrs 43 mins
Moonrise: 3:17 AM
Moon Transit: 7:24 AM
Moonset: 11:29 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
8:46 PM - 11:16 PM

Minor Periods

10:59 AM - 12:29 AM
2:47 AM - 4:17 AM

Action Rating: 2 out of 5

Thursday, March 12, 2026

Weather Forecast

Overcast
2.3°C
-2.1°C
0.3°C
64%
0.01 mm
0%
4%
38.2 kph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 3.21 μg/m3
Carbon Monoxide: 223.48 μg/m3
Nitrogen Dioxide: 6.69 μg/m3
Sulphur Dioxide: 2.83 μg/m3
Ozone: 77 μg/m3

Astronomical

Sunrise: 7:35 AM
Sun Transit: 12:00 AM
Sunset: 7:21 PM
Daylight: 11 hrs 46 mins
Moonrise: 4:10 AM
Moon Transit: 8:16 AM
Moonset: 12:24 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:46 AM - 10:16 AM
12:00 AM - 12:00 AM

Minor Periods

11:54 AM - 1:24 PM
3:40 AM - 5:10 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Blizzard
2.9°C
-3°C
-0.8°C
80%
10.4 mm
62%
26%
43.6 kph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.49 μg/m3
PM10: 4.38 μg/m3
Carbon Monoxide: 201.6 μg/m3
Nitrogen Dioxide: 6.33 μg/m3
Sulphur Dioxide: 2.78 μg/m3
Ozone: 83.62 μg/m3

Astronomical

Sunrise: 7:33 AM
Sun Transit: 12:00 AM
Sunset: 7:22 PM
Daylight: 11 hrs 49 mins
Moonrise: 4:54 AM
Moon Transit: 9:07 AM
Moonset: 1:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Minor Periods

12:56 AM - 2:26 PM
4:24 AM - 5:54 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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