Measurements:
°C
°F
CURRENT WEATHER
14:57
Niagara Falls
48°F
SE 12 mph
Feels like: 42°F
Precip: 0%
World Resorts USA Niagara Falls Weather

7 Day Weather Forecast

05.14
thu
DAY
44°F
SE 11 mph
precip
100%
NIGHT
44°F
S 7 mph
precip
0%
05.15
fri
DAY
54°F
E 6 mph
precip
0%
NIGHT
48°F
N 8 mph
precip
0%
05.16
sat
DAY
60°F
NE 12 mph
precip
100%
NIGHT
58°F
NE 6 mph
precip
0%
05.17
sun
DAY
66°F
SW 3 mph
precip
89%
NIGHT
62°F
N 4 mph
precip
0%
05.18
mon
DAY
74°F
NE 11 mph
precip
0%
NIGHT
68°F
N 9 mph
precip
0%
05.19
tue
DAY
80°F
NE 18 mph
precip
100%
NIGHT
62°F
E 12 mph
precip
49%
05.20
wed
DAY
60°F
E 14 mph
precip
0%
NIGHT
52°F
NE 8 mph
precip
0%

Niagara Falls Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Niagara Falls was 9.4°F. The maximum and minimum values were 6.0°F and 13.5°F respectively.

Niagara Falls on the Weather Map

Best Time to Visit Niagara Falls
The most sunny months:
September 14 days
July 12 days
August 12 days
The most warm months:
July 81.8 °F
August 80.3 °F
June 75.6 °F
Warmest sea temperature:
August 75.2 °F
July 73.7 °F
September 71.5 °F
The most cold months:
January 26.7 °F
February 27.8 °F
December 34.4 °F
The most rainy months:
July 3 days
October 2 days
April 2 days
The most windy months:
November 11 mph
December 11 mph
January 11 mph
more details