May · Canada
Best time to visit Niagara Falls in May Weather, crowds & prices
Weather in Niagara Falls in May
Average temperature 15°C, 75 mm of rain, about 25 days with 6+ hours of sunshine and 69% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
9.1/10
Ranked #1 of 12 months
- Avg temp
- 15°C
- Rainfall
- 75 mm
- Humidity
- 69%
- Days with 6h+ sun
- 25
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
May in Niagara Falls scores 9.1/10 for nature and wildlife travel - the single best month of the year. Expect around 15°C, 75 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Misty overlooks and boat rides shine April through September.
May in Niagara Falls tops the year's climate scores
May averages 15°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 75 mm, so plan one flexible day in three; you still get about 25 days with 6+ hours of sunshine and 14.7 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Niagara Falls at 9.1/10 — the reference point every other month on this page is measured against.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
Figure on peak pricing, with crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Niagara Falls in May?
- In May, Niagara Falls averages 15°C, 75 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 9.1/10.
- Is May a good time to visit Niagara Falls?
- May earns a 9.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Niagara Falls in May?
- Expect about 75 mm of rain in May. Average humidity is 69% and there are about 25 days with 6+ hours of sunshine.
Curated in Niagara Falls
Tickets & experiences
Things to do in Niagara Falls
Niagara Falls, Canada. Live activities and tours from GetYourGuide, matched to this destination.