Current sea water temperature:
+43.9°F
| Minimum sea water temperature in May: | 61.2°F |
| Maximum sea water temperature in May: | 41.0°F |
| Average sea water temperature in May: | 48.7°F |
| more information | |
14 days
forecast
forecast
| Niagara-on-the-Lake |
monthly
weather
weather
| Niagara-on-the-Lake |
Sea water temperature for the last 10 days:
| May 17 | 43.9°F | May 12 | 45.9°F |
| May 16 | 45.3°F | May 11 | 46.6°F |
| May 15 | 45.3°F | May 10 | 45.7°F |
| May 14 | 45.7°F | May 9 | 44.2°F |
| May 13 | 47.7°F | May 8 | 43.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Niagara-on-the-Lake?
Based on the data about daily sea water temperature for the last three years the warmest sea in Niagara-on-the-Lake was noticed in August, July and September.
Monthly Sea Temperatures in Niagara-on-the-Lake, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 74.7°F. The highest and lowest sea temperatures during the month were 77.7°F and 70.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 74.3°F. The highest and lowest sea temperatures during the month were 78.4°F and 67.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 67.8°F. The highest and lowest sea temperatures during the month were 70.0°F and 65.7°F.
current
weather
weather
| Niagara-on-the-Lake |
weather in
May
May
| Niagara-on-the-Lake |
Best time for vacation in Niagara-on-the-Lake
Niagara-on-the-Lake on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Niagara-on-the-Lake
Local time: 15:27
May 17, sunday
1800
81°F
NE
2 mph
2 mph
2100
72°F
NW
6 mph
6 mph
May 18, monday
0000
63°F
NE
4 mph
4 mph
0300
57°F
NE
4 mph
4 mph
0600
57°F
NE
11 mph
11 mph
0900
61°F
NE
11 mph
11 mph
1200
68°F
NE
16 mph
16 mph
1500
72°F
NE
17 mph
17 mph
