May · Canada
Best time to visit Niagara-on-the-Lake in May Weather, crowds & prices
Weather in Niagara-on-the-Lake in May
Average temperature 13°C, 41 mm of rain, about 27 days with 6+ hours of sunshine and 74% 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
- 13°C
- Rainfall
- 41 mm
- Humidity
- 74%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
May in Niagara-on-the-Lake scores 9.1/10 for sightseeing and cultural travel - the single best month of the year. Expect around 13°C, 41 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Niagara-on-the-Lake's colonial main street and vineyards sit where the Niagara river meets Lake Ontario.
May: the best month of the year in Niagara-on-the-Lake
Temperatures hover around 13°C (55°F) — the kind of month where neither heat nor cold forces the schedule.
With around 41 mm of rain, any showers tend to pass through rather than settle in; about 27 days with 6+ hours of sunshine and 14.5 hours of daylight fill the rest.
On our climate-comfort scale this is the top-ranked month of the year for Niagara-on-the-Lake 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.
Budget for peak pricing, and 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-on-the-Lake in May?
- In May, Niagara-on-the-Lake averages 13°C, 41 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 9.1/10.
- Is May a good time to visit Niagara-on-the-Lake?
- 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-on-the-Lake in May?
- Expect about 41 mm of rain in May. Average humidity is 74% and there are about 27 days with 6+ hours of sunshine.
Curated in Niagara-on-the-Lake
Tickets & experiences
Things to do in Niagara-on-the-Lake
Niagara-on-the-Lake, Canada. Live activities and tours from GetYourGuide, matched to this destination.