Beach Water Testing in Niagara
Check before swimming
We test the water of beaches in Niagara every year during the summer. Make sure the water is safe before you swim.
Beach water testing results
Beach | Municipality | Water Temperature | Updated |
---|---|---|---|
![]() Open for swimming |
Fort Erie | 12.8°C / 55.04°F |
June 3, 2025 |
![]() Open for swimming |
Fort Erie | 12.6°C / 54.68°F |
June 3, 2025 |
![]() Open for swimming |
Fort Erie | 12°C / 53.6°F |
June 3, 2025 |
![]() Open for swimming |
Fort Erie | 13.43°C / 56.174°F |
June 3, 2025 |
![]() Open for swimming |
Grimsby | 12.7°C / 54.86°F |
June 3, 2025 |
![]() Open for swimming |
Grimsby | 12°C / 53.6°F |
June 3, 2025 |
![]() Open for swimming |
Grimsby | 12.4°C / 54.32°F |
June 3, 2025 |
![]() Open for swimming |
Lincoln | 12.2°C / 53.96°F |
June 3, 2025 |
![]() Open for swimming |
Niagara-on-the-Lake | 16°C / 60.8°F |
June 4, 2025 |
![]() Open for swimming |
Port Colborne | 14.2°C / 57.56°F |
June 4, 2025 |
![]() Open for swimming |
Port Colborne | 14.9°C / 58.82°F |
June 4, 2025 |
![]() Open for swimming |
Port Colborne | 13.9°C / 57.02°F |
June 3, 2025 |
![]() Open for swimming |
Port Colborne | 15.8°C / 60.44°F |
June 3, 2025 |
![]() Open for swimming |
Port Colborne | 12.7°C / 54.86°F |
June 3, 2025 |
![]() Open for swimming |
St. Catharines | 12.1°C / 53.78°F |
June 3, 2025 |
![]() Open for swimming |
St. Catharines | 11.8°C / 53.24°F |
June 3, 2025 |
![]() Open for swimming |
Wainfleet | 14.1°C / 57.38°F |
June 4, 2025 |
![]() Open for swimming |
Wainfleet | 14.8°C / 58.64°F |
May 30, 2025 |
![]() Open for swimming |
Wainfleet | 15.2°C / 59.36°F |
June 4, 2025 |
Beach water testing
Every year between May (Victoria Day) and September (Labour Day), we test over 19 public beaches for levels of E. Coli bacteria. Beach water testing results may not always be accurate as conditions can change due to:
- Large number of swimmers
- Wind and high waves
- Large number of birds
- Recent heavy rainfall
- Cloudy water
Test results are intended as general guidance. Residents are encouraged to consider the current weather before deciding to enter the water.
Posted / closed beaches
Beaches are posted unsafe / closed when water tests show unacceptable levels of E. Coli bacteria.
The beach might also be unsafe because of floating debris, oil, excessive weed growth, bad odours and general turbidity.
Swimming in these waters could cause infections of the ear, eye, nose, throat and skin, as well as cause diarrhea if the water is ingested.
Weather Forecast: Lake Ontario · Lake Erie