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

View Nearby Locations     View All Ontario Locations     View Locations Near Me

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

21.8°C
Sunny
Sunny
21.8°C
21°C
59%
SW 30.6 kph
63 kph
20°C
18.4°C
0 mm
0%
10 km
1007 mbar
0.5

Five Day Weather Forecast

Moderate rain
Tue
H: 23°C
L: 12°C
Patchy rain nearby
Wed
H: 6°C
L: 1°C
Overcast
Thu
H: 8°C
L: 2°C
Moderate rain
Fri
H: 22°C
L: 7°C
Moderate rain
Sat
H: 10°C
L: 2°C

Air Quality

AQI: 1 - Good
PM2.5: 11.75 μg/m3
PM10: 11.85 μg/m3
Carbon Monoxide: 181.85 μg/m3
Nitrogen Dioxide: 13.15 μg/m3
Sulphur Dioxide: 3.65 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 1:22 PM
Sunset: 7:43 PM
Daylight: 12 hrs 42 mins
Moonrise: 6:33 PM
Moon Transit: 12:00 AM
Moonset: 6:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:15 PM - 3:45 PM

Minor Periods

6:03 PM - 7:33 PM
5:47 AM - 7:17 AM

Action Rating: 4 out of 5

squall warning ended

Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Tue March 31, 2026, 2:54 PM
Expires: Tue March 31, 2026, 3:54 PM

Squalls have weakened or moved out of the area. ###


squall warning in effect

Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Tue March 31, 2026, 2:02 PM
Expires: Tue March 31, 2026, 5:01 PM

Squalls with wind gusts up to 35 knots, frequent lightning, hail up to 2 centimetres and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area. A thunderstorm is located south of Port Dover moving east at 40 knots. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.


squall warning in effect

Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Tue March 31, 2026, 2:02 PM
Expires: Tue March 31, 2026, 5:01 PM

Squalls with wind gusts up to 35 knots, frequent lightning, hail up to 2 centimetres and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.


Tuesday, March 31, 2026

Weather Forecast

Moderate rain
22.8°C
12.4°C
16.3°C
85%
8.53 mm
81%
0%
42.5 kph
0.7


Air Quality

AQI: 2 - Moderate
PM2.5: 15.96 μg/m3
PM10: 16.44 μg/m3
Carbon Monoxide: 200.41 μg/m3
Nitrogen Dioxide: 12.94 μg/m3
Sulphur Dioxide: 4.01 μg/m3
Ozone: 72.04 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 1:22 PM
Sunset: 7:43 PM
Daylight: 12 hrs 42 mins
Moonrise: 6:33 PM
Moon Transit: 12:00 AM
Moonset: 6:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:15 PM - 3:45 PM

Minor Periods

6:03 PM - 7:33 PM
5:47 AM - 7:17 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Patchy rain nearby
6.1°C
1°C
4.7°C
87%
2.25 mm
89%
0%
25.6 kph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 8.11 μg/m3
PM10: 8.19 μg/m3
Carbon Monoxide: 246.97 μg/m3
Nitrogen Dioxide: 15.82 μg/m3
Sulphur Dioxide: 5.59 μg/m3
Ozone: 68.84 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:21 PM
Sunset: 7:45 PM
Daylight: 12 hrs 45 mins
Moonrise: 7:40 PM
Moon Transit: 12:40 AM
Moonset: 6:36 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:10 AM - 2:40 AM
1:57 PM - 4:27 PM

Minor Periods

7:10 PM - 8:40 PM
6:06 AM - 7:36 AM

Action Rating: 3 out of 5

Thursday, April 2, 2026

Weather Forecast

Overcast
8.1°C
1.7°C
4.4°C
90%
0 mm
0%
0%
33.8 kph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 5.87 μg/m3
PM10: 5.97 μg/m3
Carbon Monoxide: 301.21 μg/m3
Nitrogen Dioxide: 14.63 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 66.56 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:21 PM
Sunset: 7:46 PM
Daylight: 12 hrs 48 mins
Moonrise: 8:47 PM
Moon Transit: 1:22 AM
Moonset: 6:55 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:52 AM - 3:22 AM
2:40 PM - 5:10 PM

Minor Periods

8:17 PM - 9:47 PM
6:25 AM - 7:55 AM

Action Rating: 3 out of 5

Friday, April 3, 2026

Weather Forecast

Moderate rain
22.4°C
6.9°C
15.5°C
87%
12.89 mm
88%
0%
43.6 kph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 7.3 μg/m3
PM10: 7.42 μg/m3
Carbon Monoxide: 215.02 μg/m3
Nitrogen Dioxide: 12.41 μg/m3
Sulphur Dioxide: 4.21 μg/m3
Ozone: 66.64 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:21 PM
Sunset: 7:47 PM
Daylight: 12 hrs 51 mins
Moonrise: 9:53 PM
Moon Transit: 2:05 AM
Moonset: 7:15 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

1:35 AM - 4:05 AM
3:23 PM - 5:53 PM

Minor Periods

9:23 PM - 10:53 PM
6:45 AM - 8:15 AM

Action Rating: 4 out of 5

Saturday, April 4, 2026

Weather Forecast

Moderate rain
9.5°C
2.4°C
6.7°C
84%
5.18 mm
77%
0%
40.3 kph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 5.4 μg/m3
PM10: 5.4 μg/m3
Carbon Monoxide: 226.73 μg/m3
Nitrogen Dioxide: 17.93 μg/m3
Sulphur Dioxide: 5.89 μg/m3
Ozone: 59.77 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:21 PM
Sunset: 7:48 PM
Daylight: 12 hrs 53 mins
Moonrise: 11:00 PM
Moon Transit: 2:50 AM
Moonset: 7:39 AM
Moon Phase: Full
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

2:20 AM - 4:50 AM
4:09 PM - 6:39 PM

Minor Periods

10:30 PM - 12:00 PM
7:09 AM - 8:39 AM

Action Rating: 4 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.

Webcams Near Grimsby, ON

Sponsored Content