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

15.3°C
Partly Cloudy
Partly Cloudy
15.3°C
13.8°C
66%
SSW 49.7 kph
84.7 kph
12.2°C
10.7°C
0 mm
0%
10 km
1005 mbar
1.3

Five Day Weather Forecast

Moderate rain
Fri
H: 15°C
L: 3°C
Overcast
Sat
H: 0°C
L: -0°C
Cloudy
Sun
H: -0°C
L: -4°C
Cloudy
Mon
H: 1°C
L: -4°C
Patchy rain nearby
Tue
H: 2°C
L: 1°C

Air Quality

AQI: 1 - Good
PM2.5: 2.45 μg/m3
PM10: 2.45 μg/m3
Carbon Monoxide: 239.85 μg/m3
Nitrogen Dioxide: 9.75 μg/m3
Sulphur Dioxide: 3.05 μg/m3
Ozone: 39 μg/m3

Astronomical

Sunrise: 7:49 AM
Sun Transit: 12:25 AM
Sunset: 5:01 PM
Daylight: 9 hrs 12 mins
Moonrise: 12:19 AM
Moon Transit: 5:18 AM
Moonset: 11:06 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
6:35 PM - 9:05 PM

Minor Periods

10:36 AM - 12:06 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

High Wind Warning issued January 9 at 12:45AM EST until January 9 at 10:00PM EST by NWS Buffalo NY

Effective: Fri January 9, 2026, 12:45 AM
Expires: Fri January 9, 2026, 3:30 PM

* WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph expected. Strongest gusts likely between 3 pm and 7 pm. * WHERE...Niagara, Orleans, Monroe, Northern Erie, Genesee, and Wyoming Counties. * WHEN...From 7 AM this morning to 10 PM EST this evening. * IMPACTS...Strong winds will blow down trees and power lines. Scattered power outages are expected. Travel will be difficult, especially for high profile vehicles.

Avoid being outside in forested areas and around trees. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive.


yellow warning - wind - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Fri January 9, 2026, 3:55 AM
Expires: Fri January 9, 2026, 7:55 PM

Strong winds expected today. What: Strong winds with gusts of 90 km/h and potentially in excess of 100 km/h for areas along the Lake Erie shore. When: Beginning this morning and easing late this afternoon or early this evening. Additional information: Showers and the risk of thunderstorms will push into the region this morning. The showers or thunderstorms will have the potential to generate strong wind gusts near 70 to 80 km/h. A cold front is then expected to push through the region this afternoon. The passage of the cold front may lead to another wave of strong winds with gusts up to 90 km/h and potentially in excess of 100 km/h for areas along the Lake Erie shore. The winds will ease from west to east later this afternoon or early this evening. ### Local utility outages are possible. Damage to roofs, fences, branches or soft shelters is possible. Some property damage is possible. There is a risk of injury due to flying or falling debris. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Secure loose objects.


yellow warning - wind - in effect

Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Fri January 9, 2026, 10:34 AM
Expires: Fri January 9, 2026, 9:00 PM

Strong winds expected today. What: Strong winds with gusts of 90 km/h and potentially in excess of 100 km/h for areas along the Lake Erie shore. When: This afternoon through early this evening. Additional information: A cold front will move through the region bringing strong southwest winds. ### Local utility outages are possible. Damage to roofs, fences, branches or soft shelters is possible. Some property damage is possible. There is a risk of injury due to flying or falling debris. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Secure loose objects.


Friday, January 9, 2026

Weather Forecast

Moderate rain
15.2°C
2.6°C
7.8°C
80%
13.25 mm
88%
0%
49.7 kph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 7.22 μg/m3
PM10: 7.35 μg/m3
Carbon Monoxide: 216.97 μg/m3
Nitrogen Dioxide: 11.3 μg/m3
Sulphur Dioxide: 7.1 μg/m3
Ozone: 55 μg/m3

Astronomical

Sunrise: 7:49 AM
Sun Transit: 12:25 AM
Sunset: 5:01 PM
Daylight: 9 hrs 12 mins
Moonrise: 12:19 AM
Moon Transit: 5:18 AM
Moonset: 11:06 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
6:35 PM - 9:05 PM

Minor Periods

10:36 AM - 12:06 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, January 10, 2026

Weather Forecast

Overcast
0.4°C
-0.2°C
0.6°C
95%
0 mm
0%
0%
33.1 kph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 5.67 μg/m3
PM10: 5.76 μg/m3
Carbon Monoxide: 331.65 μg/m3
Nitrogen Dioxide: 13.51 μg/m3
Sulphur Dioxide: 4.28 μg/m3
Ozone: 49.24 μg/m3

Astronomical

Sunrise: 7:49 AM
Sun Transit: 12:25 AM
Sunset: 5:02 PM
Daylight: 9 hrs 13 mins
Moonrise: 12:24 AM
Moon Transit: 6:00 AM
Moonset: 11:25 AM
Moon Phase: Last Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
7:16 PM - 9:46 PM

Minor Periods

10:55 AM - 12:25 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, January 11, 2026

Weather Forecast

Cloudy
-0.3°C
-3.6°C
-1.2°C
78%
0 mm
0%
0%
45 kph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.71 μg/m3
PM10: 3.98 μg/m3
Carbon Monoxide: 250.65 μg/m3
Nitrogen Dioxide: 8.76 μg/m3
Sulphur Dioxide: 3.17 μg/m3
Ozone: 60.28 μg/m3

Astronomical

Sunrise: 7:49 AM
Sun Transit: 12:26 AM
Sunset: 5:04 PM
Daylight: 9 hrs 15 mins
Moonrise: 1:28 AM
Moon Transit: 6:41 AM
Moonset: 11:45 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

6:11 AM - 8:41 AM
7:59 PM - 10:29 PM

Minor Periods

11:15 AM - 12:45 AM
12:58 AM - 2:28 AM

Action Rating: 2 out of 5

Monday, January 12, 2026

Weather Forecast

Cloudy
1.3°C
-3.7°C
-1.1°C
70%
0 mm
0%
0%
37.8 kph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.79 μg/m3
PM10: 4 μg/m3
Carbon Monoxide: 186.42 μg/m3
Nitrogen Dioxide: 7.86 μg/m3
Sulphur Dioxide: 3.14 μg/m3
Ozone: 65.6 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:26 AM
Sunset: 5:05 PM
Daylight: 9 hrs 16 mins
Moonrise: 2:33 AM
Moon Transit: 7:24 AM
Moonset: 12:09 AM
Moon Phase: Last Quarter
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
8:43 PM - 11:13 PM

Minor Periods

11:39 AM - 1:09 PM
2:03 AM - 3:33 AM

Action Rating: 2 out of 5

Tuesday, January 13, 2026

Weather Forecast

Patchy rain nearby
2.1°C
0.5°C
1°C
78%
0.91 mm
83%
0%
34.9 kph
0


Air Quality

AQI: 1 - Good
PM2.5: 7.27 μg/m3
PM10: 7.61 μg/m3
Carbon Monoxide: 219.97 μg/m3
Nitrogen Dioxide: 12.42 μg/m3
Sulphur Dioxide: 5.7 μg/m3
Ozone: 48.23 μg/m3

Astronomical

Sunrise: 7:48 AM
Sun Transit: 12:26 AM
Sunset: 5:06 PM
Daylight: 9 hrs 18 mins
Moonrise: 3:38 AM
Moon Transit: 8:10 AM
Moonset: 12:38 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

7:40 AM - 10:10 AM
12:00 AM - 12:00 AM

Minor Periods

12:08 AM - 1:38 PM
3:08 AM - 4:38 AM

Action Rating: 3 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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