Current sea water temperature:
+47.3°F
| Minimum sea water temperature in May: | 65.3°F |
| Maximum sea water temperature in May: | 40.8°F |
| Average sea water temperature in May: | 49.4°F |
| more information | |
14 days
forecast
forecast
| Niagara Falls |
monthly
weather
weather
| Niagara Falls |
Sea water temperature for the last 10 days:
| May 17 | 47.3°F | May 12 | 48.9°F |
| May 16 | 44.1°F | May 11 | 48.9°F |
| May 15 | 47.3°F | May 10 | 46.4°F |
| May 14 | 46.9°F | May 9 | 45.3°F |
| May 13 | 46.6°F | May 8 | 44.8°F |
Monthly sea water temperature, °F
When is the warmest sea in Niagara Falls?
Based on the data about daily sea water temperature for the last three years the warmest sea in Niagara Falls was noticed in August, July and September.
Monthly Sea Temperatures in Niagara Falls, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 72.9°F. The highest and lowest sea temperatures during the month were 75.9°F and 68.4°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 72.5°F. The highest and lowest sea temperatures during the month were 76.3°F and 65.5°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 66.4°F. The highest and lowest sea temperatures during the month were 69.3°F and 62.8°F.
current
weather
weather
| Niagara Falls |
weather in
May
May
| Niagara Falls |
Best time for vacation in Niagara Falls
Niagara Falls on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Niagara Falls
Local time: 15:26
May 17, sunday
1800
81°F
NE
5 mph
5 mph
2100
70°F
N
5 mph
5 mph
May 18, monday
0000
64°F
N
5 mph
5 mph
0300
61°F
N
6 mph
6 mph
0600
61°F
NE
9 mph
9 mph
0900
66°F
NE
11 mph
11 mph
1200
73°F
NE
14 mph
14 mph
1500
77°F
NE
14 mph
14 mph
