Measurements:
°C
°F
CURRENT WEATHER
16:56
Niagara-on-the-Lake
80°F
SW 6 mph
Feels like: 82°F
Precip: 10%
World Resorts Canada Niagara-on-the-Lake Weather

7 Day Weather Forecast

09.08
tue
DAY
78°F
S 3 mph
precip
15%
NIGHT
68°F
N 5 mph
precip
10%
09.09
wed
DAY
78°F
NE 15 mph
precip
31%
NIGHT
70°F
NE 12 mph
precip
32%
09.10
thu
DAY
70°F
E 13 mph
precip
14%
NIGHT
64°F
S 14 mph
precip
3%
09.11
fri
DAY
64°F
E 4 mph
precip
4%
NIGHT
62°F
NW 9 mph
precip
8%
09.12
sat
DAY
70°F
SE 2 mph
precip
7%
NIGHT
70°F
NE 8 mph
precip
16%
09.13
sun
DAY
76°F
NE 4 mph
precip
9%
NIGHT
68°F
S 14 mph
precip
54%
09.14
mon
DAY
66°F
SW 10 mph
precip
16%
NIGHT
66°F
W 11 mph
precip
16%

Niagara-on-the-Lake Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Niagara-on-the-Lake was 19.9°F. The maximum and minimum values were 18.7°F and 21.1°F respectively.

Niagara-on-the-Lake on the Weather Map

Best Time to Visit Niagara-on-the-Lake
The most sunny months:
September 14 days
July 14 days
August 13 days
The most warm months:
July 82.2 °F
August 80.2 °F
June 75.8 °F
Warmest sea temperature:
August 76.6 °F
July 75.7 °F
September 71.7 °F
The most cold months:
January 26.9 °F
February 27.9 °F
December 34.3 °F
The most rainy months:
July 3 days
October 2 days
April 2 days
The most windy months:
January 12 mph
February 12 mph
December 12 mph
more details