Measurements:
°C
°F
CURRENT WEATHER
09:21
Niagara-on-the-Lake
76°F
NE 13 mph
Feels like: 80°F
Precip: 0%
World Resorts Canada Niagara-on-the-Lake Weather

7 Day Weather Forecast

05.19
tue
DAY
86°F
NE 20 mph
precip
0%
NIGHT
64°F
NE 20 mph
precip
100%
05.20
wed
DAY
54°F
E 9 mph
precip
0%
NIGHT
48°F
SE 7 mph
precip
0%
05.21
thu
DAY
48°F
SW 12 mph
precip
0%
NIGHT
44°F
W 5 mph
precip
0%
05.22
fri
DAY
54°F
SW 16 mph
precip
0%
NIGHT
52°F
W 9 mph
precip
0%
05.23
sat
DAY
52°F
W 12 mph
precip
100%
NIGHT
52°F
W 13 mph
precip
85%
05.24
sun
DAY
56°F
NW 7 mph
precip
100%
NIGHT
56°F
N 9 mph
precip
0%
05.25
mon
DAY
58°F
N 4 mph
precip
100%
NIGHT
58°F
N 9 mph
precip
100%

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

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Niagara-on-the-Lake was 6.8°F. The maximum and minimum values were 5.0°F and 8.7°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
August 12 days
July 12 days
The most warm months:
July 81.3 °F
August 80.0 °F
June 75.1 °F
Warmest sea temperature:
August 76.8 °F
July 75.8 °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