Measurements:
°C
°F
CURRENT WEATHER
20:38
Niagara Falls
62°F
NE 3 mph
Feels like: 62°F
Precip: 21%
World Resorts Canada Niagara Falls Weather

7 Day Weather Forecast

09.28
mon
DAY
60°F
S 5 mph
precip
23%
NIGHT
62°F
NE 2 mph
precip
25%
09.29
tue
DAY
66°F
W 2 mph
precip
20%
NIGHT
64°F
N 6 mph
precip
25%
09.30
wed
DAY
70°F
NE 7 mph
precip
15%
NIGHT
70°F
N 7 mph
precip
15%
10.01
thu
DAY
80°F
NE 15 mph
precip
6%
NIGHT
70°F
E 4 mph
precip
23%
10.02
fri
DAY
56°F
SE 8 mph
precip
29%
NIGHT
50°F
SE 6 mph
precip
4%
10.03
sat
DAY
58°F
NW 2 mph
precip
1%
NIGHT
52°F
W 6 mph
precip
14%
10.04
sun
DAY
56°F
N 11 mph
precip
36%
NIGHT
60°F
N 15 mph
precip
86%

Niagara Falls Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Niagara Falls was 20.7°F. The maximum and minimum values were 15.8°F and 22.7°F respectively.

Niagara Falls on the Weather Map

Best Time to Visit Niagara Falls
The most sunny months:
July 14 days
September 13 days
June 12 days
The most warm months:
July 82.3 °F
August 80.0 °F
June 75.6 °F
Warmest sea temperature:
August 75.0 °F
July 73.8 °F
September 71.5 °F
The most cold months:
January 26.6 °F
February 27.6 °F
December 34.2 °F
The most rainy months:
July 3 days
April 3 days
October 2 days
The most windy months:
November 12 mph
December 11 mph
February 11 mph
more details