Current Sea Water Temperature:
+75.8°F
| Maximum Sea Water Temperature in July: | 81.6°F |
| Minimum Sea Water Temperature in July: | 69.0°F |
| Average water temperature in July: | 75.7°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| July 30 | 75.8°F | July 25 | 74.0°F |
| July 29 | 75.0°F | July 24 | 75.2°F |
| July 28 | 75.4°F | July 23 | 75.0°F |
| July 27 | 73.4°F | July 22 | 76.4°F |
| July 26 | 75.2°F | July 21 | 76.4°F |
When is the Warmest Sea for Niagara-on-the-Lake?
According to our data for the last three years for Niagara-on-the-Lake the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Niagara-on-the-Lake was 77.5°F. The maximum and minimum values were 72.2°F and 80.8°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for Niagara-on-the-Lake was 75.3°F. The maximum and minimum values were 71.8°F and 77.0°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Niagara-on-the-Lake was 69.8°F. The maximum and minimum values were 67.4°F and 72.2°F respectively.
Canada Resorts:
NAME
F°
| Barrie |  |
+58 |
| Halifax |  |
+64 |
| Kingston |  |
+66 |
| Montreal |  |
+66 |
| Ottawa | |
+66 |
| Prince Edward Island | |
+64 |
| Quebec | |
+62 |
| Saint John | |
+64 |
| St. John's |  |
+54 |
| Sydney |  |
+58 |
| Toronto | |
+62 |
| Vancouver | |
+58 |
| Victoria | |
+56 |
| Winnipeg | |
+72 |
| Yellowknife |  |
+54 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Niagara-on-the-Lake
Local time: 05:52
30 jul, thursday
| 0600 |  |
64°F | SE 9 mph |
| 0900 |  |
70°F | S 9 mph |
| 1200 |  |
76°F | SE 4 mph |
| 1500 | |
80°F | SE 3 mph |
| 1800 | |
80°F | E 6 mph |
| 2100 | |
72°F | E 9 mph |
31 jul, friday
| 0000 | |
70°F | E 6 mph |
| 0300 | |
68°F | E 6 mph |