Measurements:
°C
°F
Niagara Falls
94°F
E 11 mph
Feels like: 98°F
Precip: 1%
World Resorts USA Niagara Falls Weather May Weather in Niagara Falls

Niagara Falls Weather: May

Average Day Temperature: 63.7°F
Average Night Temperature: 50.9°F
Sea Water Temperature: 49.6°F
Number of Sunny Days: 11 days
Sunshine Hours: 14.1 - 15.1 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.9 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 94°F. The lowest night temperature was 30°F. The average values for day and night temperatures during May were 65.2°F и 48.8°F respectivly.

Niagara Falls Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Niagara Falls was 49.2°F. The maximum and minimum values were 42.4°F and 58.2°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Niagara Falls is 0.9 in.

Wind Speed in May, mph

The average wind speed in May is 8.2 mph. It makes May one of the most windless months of the year for Niagara Falls.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Niagara Falls in May is 8.1 hours.

Best Time to Visit Niagara Falls
The most sunny months:
September 14 days
June 12 days
July 12 days
The most warm months:
July 81.8 °F
August 80.3 °F
June 76.3 °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

Niagara Falls on the Weather Map

USA Resorts:
NAME
Boston +94
Chicago +88
Hawaii +80
Houston +90
Las Vegas +120
Los Angeles +106
Maui +76
Miami +100
Myrtle Beach +96
New York +114
San Diego +96
San Francisco +76
Santa Monica +84
Sarasota +102
Tampa +100
24 Hours Weather Forecast
Niagara Falls
Local time: 14:15
15 jul, wednesday
1500 94°F
E
11 mph
1800 92°F
SE
11 mph
2100 82°F
SE
7 mph
16 jul, thursday
0000 78°F
E
7 mph
0300 76°F
E
7 mph
0600 74°F
E
6 mph
0900 76°F
E
6 mph
1200 86°F
E
7 mph