Niagara Falls Sea Temperature in May

Looking to find out what the average sea water temperature in Niagara Falls is for May? Find out what the lowest, highest, and average water temperatures are for Niagara Falls over the past 10 years.

Average water temperature in Niagara Falls for May

The average, high, and low temperatures below should help you if you can swim in the water in Niagara Falls in May.

7.98° C

(46.36° F)

  • highest: 17.8° C (64.04° F)
  • lowest: 3.34° C (38.01° F)

This water is very cold and can cause pain. We don't recommend you swim in this temperature for anything other than very short swims of 5 to 10 minutes unless you are a very experienced cold water swimmer.

Water temperature range by day in May in Niagara Falls

The chart below shows the range of low and high temperatures by day for the month of May in Niagara Falls.

Water temperatures for May in Niagara Falls in recent years

Day 2024 2023 2022 2021
1 6.6° C 5.21° C 4.22° C 4.96° C
2 0° C 5.16° C 4.48° C 5.15° C
3 0° C 5.33° C 4.51° C 5.14° C
4 0° C 5.92° C 4.36° C 5.2° C
5 0° C 6.51° C 4.27° C 5.32° C
6 0° C 7.3° C 4.64° C 5.42° C
7 0° C 7.52° C 4.82° C 5.49° C
8 0° C 7.65° C 5.05° C 5.97° C
9 0° C 7.96° C 5.25° C 5.96° C
10 0° C 8.08° C 4.95° C 5.93° C
11 0° C 8.36° C 4.98° C 5.89° C
12 0° C 8.38° C 5.65° C 6° C
13 0° C 8.43° C 6.16° C 6.39° C
14 0° C 9.64° C 7.04° C 7.21° C
15 0° C 9.73° C 7.16° C 7.77° C
16 0° C 9.46° C 7.37° C 9.49° C
17 0° C 8.49° C 8.23° C 11.23° C
18 0° C 8.19° C 7.9° C 11.11° C
19 0° C 8.49° C 7.66° C 11.52° C
20 0° C 9.11° C 7.68° C 12.29° C
21 0° C 9.25° C 8.01° C 14.45° C
22 0° C 9.49° C 9.01° C 14.28° C
23 0° C 9.92° C 9.12° C 13.94° C
24 0° C 10.32° C 9.25° C 13.43° C
25 0° C 10.52° C 9.55° C 13.22° C
26 0° C 10.8° C 10.77° C 13.1° C
27 0° C 11.55° C 10° C 12.68° C
28 0° C 12.61° C 11.02° C 11.21° C
29 0° C 13.8° C 11.81° C 9.01° C
30 0° C 14.16° C 11.62° C 9.98° C
31 0° C 14.82° C 11.47° C 11.33° C

Water temperature in May for locations near Niagara Falls

Goat Island

United States, North America

1.05 miles away

Thorold

Canada, North America

6.21 miles away

St. Catharines

Canada, North America

9.48 miles away

Youngstown

United States, North America

11.04 miles away

Tonawanda

United States, North America

11.39 miles away

Niagara-on-the-Lake

Canada, North America

11.44 miles away

Data source and citation

Raw data for the calculations made to find the sea surface temperature in Niagara Falls comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.

  • "Niagara Falls Sea Temperature in May". SeaTemperatures.net. Accessed on May 2, 2024. http://seatemperatures.net/north-america/canada/niagara-falls-may-temperature/.

  • "Niagara Falls Sea Temperature in May". SeaTemperatures.net, http://seatemperatures.net/north-america/canada/niagara-falls-may-temperature/. Accessed 2 May, 2024

  • Niagara Falls Sea Temperature in May. SeaTemperatures.net. Retrieved from http://seatemperatures.net/north-america/canada/niagara-falls-may-temperature/.