Late spring · Weather & things to do
Niagara Falls & Niagara-on-the-Lake in May
Niagara Falls & Niagara-on-the-Lake warms up: highs climb to 64°F (18°C), from 51°F in April, with lows of 48°F (9°C) and about 3.2 in (81 mm) of rain.
May opens the best stretch on our comfort score, at 79/100 (4th of 12).
- Avg high
- 64°F (18°C)
- Avg low
- 48°F (9°C)
- Rain
- 3.2 in (81 mm)
- Humidity
- 78%
- Cloud cover
- 74%
- Daylight
- ~14 h 29 min
- Comfort score
- 79/100 · Great
What May feels like
Highs near 64°F (18°C) make for comfortable sightseeing weather.
Lows average 48°F (9°C).
Some rain is likely, about 3.2 in (81 mm) in the month, so pack for a shower or two.
Plan around May
May is one of Niagara Falls & Niagara-on-the-Lake's best months on the climate data.
- Start of the wettest three-month stretch (May – July), which brings about 9.7 in (247 mm) in total.
- Opens the best-scoring stretch on our comfort score: May – September.
- The year's biggest warm-up: highs jump 7°C (12°F) from April.
- Comfort improves from 59/100 in April to 79/100.
- May sits inside the May – Oct window our Toronto, Niagara & Prince Edward County route recommends.
What to pack for May
- A warm layer for eveningslows near 48°F
- Packable rain jacket or umbrellaabout 3.2 in of rain
- Comfortable walking shoesmost picks involve some walking
What to do in Niagara Falls & Niagara-on-the-Lake in May
May is good outdoor weather here, so these picks lean toward the open air.
Niagara Parkway
Riverside road past orchards, wineries and the Floral Clock between the falls and the lake.
Why now May scores 79/100 for comfort, good conditions for being outside.
Niagara City Cruises
Boat ride into the spray at the foot of Horseshoe Falls; ponchos supplied.
Why now Highs near 64°F and 3.2 in of monthly rain make this an easy outdoor pick.
Horseshoe Falls
The largest of the three falls, best seen from Table Rock on the Canadian side.
Why now One to do outside while the weather is on your side.
Fort George National Historic Site
Rebuilt War of 1812 fort with musket demonstrations in summer.
Queen Street, Niagara-on-the-Lake
Tree-lined main street of 19th-century storefronts, inns and the clock tower.
Nearby in May
- Toronto in May~36 mi · highs 59°F, 2.9 in rain · 3°C (5°F) cooler by day, about as wet
- Keuka Lake in May~107 mi · highs 69°F, 3.4 in rain · 3°C (6°F) warmer by day, about as wet
- Seneca Lake in May~109 mi · highs 68°F, 3.5 in rain · 3°C (5°F) warmer by day, about as wet
- Prince Edward County in May~109 mi · highs 59°F, 2.7 in rain · 2°C (4°F) cooler by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Niagara Falls & Niagara-on-the-Lake in May: quick answers
Is May a good time to visit Niagara Falls & Niagara-on-the-Lake?
Yes. On the climate data it's one of the best months, scoring 79/100. Expect highs of 64°F (18°C) and 3.2 in (81 mm) of rain. May is inside the May – Oct window our Toronto, Niagara & Prince Edward County route recommends.
How cold is Niagara Falls & Niagara-on-the-Lake in May?
Average highs are 64°F (18°C) and average lows 48°F (9°C), making it the 5th-warmest month by daytime highs.
Does it rain a lot in Niagara Falls & Niagara-on-the-Lake in May?
Some: about 3.2 in (81 mm) of rain falls across May on average, the 3rd-wettest month of the year. The annual total is about 34.3 in (871 mm).
What should I pack for Niagara Falls & Niagara-on-the-Lake in May?
Bring a warm layer for evenings (lows near 48°F), packable rain jacket or umbrella (about 3.2 in of rain) and comfortable walking shoes (most picks involve some walking).
More on Niagara Falls & Niagara-on-the-Lake
Routes in season in May
- Toronto, Niagara & Prince Edward County May – Oct
Planning Niagara Falls & Niagara-on-the-Lake in May?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.