Current Sea Water Temperature:
+77.6°F
| Maximum Sea Water Temperature in August: | 81.2°F |
| Minimum Sea Water Temperature in August: | 69.6°F |
| Average water temperature in August: | 76.7°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| August 19 | 77.6°F | August 14 | 76.6°F |
| August 18 | 76.0°F | August 13 | 78.6°F |
| August 17 | 76.4°F | August 12 | 76.8°F |
| August 16 | 77.8°F | August 11 | 77.8°F |
| August 15 | 76.8°F | August 10 | 76.0°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 2026 for Niagara-on-the-Lake was 76.1°F. The maximum and minimum values were 73.8°F and 78.6°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for Niagara-on-the-Lake was 75.4°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°
| Halifax |  |
+70 |
| Montreal |  |
+70 |
| Niagara Falls | |
+70 |
| Ottawa |  |
+66 |
| Prince Edward Island | |
+70 |
| Quebec | |
+66 |
| Saint Andrews | |
+60 |
| Saint John | |
+74 |
| Sydney | |
+68 |
| Thunder Bay |  |
+58 |
| Toronto | |
+66 |
| Vancouver | |
+60 |
| Victoria | |
+54 |
| Winnipeg | |
+60 |
| Yellowknife | |
+56 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Niagara-on-the-Lake
Local time: 09:29
19 aug, wednesday
| 1200 |  |
76°F | SE 4 mph |
| 1500 | |
80°F | S 1 mph |
| 1800 |  |
78°F | NW 5 mph |
| 2100 | |
76°F | S 14 mph |
20 aug, thursday
| 0000 | |
72°F | S 7 mph |
| 0300 | |
70°F | S 7 mph |
| 0600 | |
70°F | S 5 mph |
| 0900 |  |
70°F | S 6 mph |