Measurements:
°C
°F
CURRENT WEATHER
09:20
Niagara Falls
74°F
NE 12 mph
Feels like: 78°F
Precip: 0%
World Resorts Canada Niagara Falls Weather

7 Day Weather Forecast

05.19
tue
DAY
80°F
NE 17 mph
precip
0%
NIGHT
66°F
NE 17 mph
precip
100%
05.20
wed
DAY
58°F
SE 10 mph
precip
0%
NIGHT
48°F
S 6 mph
precip
0%
05.21
thu
DAY
52°F
SW 11 mph
precip
0%
NIGHT
44°F
W 4 mph
precip
0%
05.22
fri
DAY
58°F
W 12 mph
precip
0%
NIGHT
54°F
W 8 mph
precip
0%
05.23
sat
DAY
52°F
W 12 mph
precip
100%
NIGHT
52°F
W 11 mph
precip
100%
05.24
sun
DAY
56°F
NW 7 mph
precip
87%
NIGHT
56°F
N 8 mph
precip
0%
05.25
mon
DAY
62°F
N 4 mph
precip
100%
NIGHT
60°F
N 8 mph
precip
100%

Niagara Falls Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Niagara Falls was 8.2°F. The maximum and minimum values were 6.2°F and 11.3°F respectively.

Niagara Falls on the Weather Map

Best Time to Visit Niagara Falls
The most sunny months:
September 13 days
August 12 days
July 11 days
The most warm months:
July 81.1 °F
August 79.8 °F
June 74.8 °F
Warmest sea temperature:
August 75.2 °F
July 73.7 °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